David's Astronomy Pages (Solar System)
Comets - 2025
Comets
2024
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Comets
2025
David's Astronomy Pages (Solar System)
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Comets 2024 |
Comets |
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Comets 2025 |
Comets Images (2025) Notes
19P/Borrelly Mar 2025 (non-detection) 29P/Schwassmann-Wachmann Mar-May 2025 C/2021 X1 (Maury-Attard) Mar 2025 (non-detection) C/2022 E2 (ATLAS) Mar-May 2025 C/2023 A3 (Tsuchinshan-ATLAS) Mar-Apr 2025 C/2023 C2 (ATLAS) Jun 2025 C/2025 F2 (SWAN) Apr 2025
- This page summarises images and observations of comets in 2025.
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| 19P/Borrelly - 2025-03-18 (passing through Ophiuchus) Sun Distance 5.88 AU (receeding) Earth Distance 5.54 AU (829.2 million km) Expected position of comet (not visible) is shown by white circle |
19P/Borrelly - 2025-03-18, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -0.98 arcsec/hr, Dec -0.24 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 45s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 04:49 UT (#1302239-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
CCD Image (100% size, log scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 04:49 UT (#1302239-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of 19P/Borrelly on Comets 2022 Page >> |
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| 29P/Schwassmann-Wachmann - 2025-03-14 (passing through Leo) Sun Distance 6.27 AU (turning) Earth Distance 5.39 AU (805.7 million km) |
29P/Schwassmann-Wachmann - 2025-03-14 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -13.32 arcsec/hr, Dec 3.51 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-14 23:56 UT (#1301109-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-03-18 (passing through Leo) Sun Distance 6.27 AU (turning) Earth Distance 5.42 AU (810.7 million km) |
29P/Schwassmann-Wachmann - 2025-03-18 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -12.21 arcsec/hr, Dec 3.22 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 21:45 UT (#1303036-40) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-03-19 (passing through Leo) Sun Distance 6.27 AU (turning) Earth Distance 5.43 AU (812.1 million km) |
29P/Schwassmann-Wachmann - 2025-03-19 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -11.91 arcsec/hr, Dec 3.14 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-19 21:19 UT (#1304055-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-19 21:25 UT (#1304055-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| 29P/Schwassmann-Wachmann - 2025-03-24 (passing through Leo) Sun Distance 6.27 AU (slowly receeding) Earth Distance 5.47 AU (818.1 million km) |
29P/Schwassmann-Wachmann - 2025-03-24 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -10.61 arcsec/hr, Dec 2.79 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-24 00:16 UT (#1305016-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-03-29 (passing through Leo) Sun Distance 6.27 AU (turning) Earth Distance 5.52 AU (826.2 million km) |
29P/Schwassmann-Wachmann - 2025-03-29 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -8.88 arcsec/hr, Dec 2.31 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-29 01:36 UT (#1306094-102) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-03-31 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.56 AU (831.3 million km) |
29P/Schwassmann-Wachmann - 2025-03-31 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -12.21 arcsec/hr, Dec 3.22 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-31 22:46 UT (#1307027-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-02 am (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.57 AU (833.3 million km) |
29P/Schwassmann-Wachmann - 2025-04-02 am Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -7.43 arcsec/hr, Dec 1.90 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-02 01:00 UT (#1308100-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-02 pm (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.58 AU (834.9 million km) |
29P/Schwassmann-Wachmann - 2025-04-02 pm Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -7.10 arcsec/hr, Dec 1.81 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-02 22:02 UT (#1309040-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-03 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.59 AU (836.7 million km) |
29P/Schwassmann-Wachmann - 2025-04-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -6.73 arcsec/hr, Dec 1.70 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 8 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-03 22:03 UT (#1310037-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-06 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.63 AU (842.4 million km) |
29P/Schwassmann-Wachmann - 2025-04-06 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -5.60 arcsec/hr, Dec 1.37 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-06 21:40 UT (#1311019-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-09 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.67 AU (848.4 million km) |
29P/Schwassmann-Wachmann - 2025-04-09 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -4.45 arcsec/hr, Dec 1.03 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (median average combine), 3x3 binning, Clear Filter 2025-04-09 21:54 UT (#1313022-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-10 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.68 AU (850.4 million km) |
29P/Schwassmann-Wachmann - 2025-04-10 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -4.06 arcsec/hr, Dec 0.92 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 21:53 UT (#1314016-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-22 (passing through Leo) Sun Distance 6.27 AU Earth Distance 5.86 AU (876.5 million km) |
29P/Schwassmann-Wachmann - 2025-04-22 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 0.61 arcsec/hr, Dec -0.48 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-22 22:58 UT (#1316007-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-04-30 (passing through Leo) Sun Distance 6.27 AU Earth Distance 5.98 AU (895.0 million km) Poor quality image (uneven sky background) |
29P/Schwassmann-Wachmann - 2025-04-30 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 3.68 arcsec/hr, Dec -1.44 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 8 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-30 23:21 UT (#1318037-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-05-01 (passing through Leo) Sun Distance 6.28 AU (receeding slowly) Earth Distance 6.00 AU (897.4 million km) |
29P/Schwassmann-Wachmann - 2025-05-01 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 4.07 arcsec/hr, Dec -1.56 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 6 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-02 00:00 UT (#1319010-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-05-15 (passing through Leo) Sun Distance 6.28 AU (receeding slowly) Earth Distance 6.22 AU (930.8 million km) A stellar like object is visible at the forecast position of the comet but there is no star object at this location in Aladin. It would seem that the comet is having a new outburst Measured Magnitude +14.10 (Clear Filter) |
29P/Schwassmann-Wachmann - 2025-05-15 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 9.01 arcsec/hr, Dec -3.20 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 8 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-15 23:07 UT (#1326014-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-05-16 (passing through Leo) Sun Distance 6.28 AU (receeding slowly) Earth Distance 6.24 AU (933.2 million km) Comet is confirmed to be having a new outburst Measured Magnitude +14.24 (Clear Filter) |
29P/Schwassmann-Wachmann - 2025-05-16 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 9.34 arcsec/hr, Dec -3.32 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-16 22:52 UT (#1327007-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| 29P/Schwassmann-Wachmann - 2025-05-17 (passing through Leo) Sun Distance 6.28 AU (receeding slowly) Earth Distance 6.25 AU (935.6 million km) Measured Magnitude +14.31 (Clear Filter) |
29P/Schwassmann-Wachmann - 2025-05-17 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 9.67 arcsec/hr, Dec -3.43 arcsec/hr) Poor quality image |
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| Annotated CCD Image (50% size, square root scale) 4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-17 23:08 UT (#1328009-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >> | ||
| Images of 29P/Schwassmann-Wachmann on Comets 2024 Page >> | ||
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| C/2021 X1 (Maury-Attard) - 2025-03-18 (passing through Delphinus) Sun Distance 6.63 AU (receeding) Earth Distance 7.23 AU (1081.4 million km) Expected position of comet (not visible) is shown by white circle |
C/2021 X1 (Maury-Attard) - 2025-03-18 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 4.62 arcsec/hr, Dec 12.37 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 03:56 UT (#1302215-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 04:00 UT (#1302215-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2021 X1 (Maury-Attard) on Comets 2023 Page >> |
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| C/2022 E2 (ATLAS) - 2025-03-14 (passing through Andromeda) Sun Distance 4.01 AU (receeding) Earth Distance 4.47 AU (669.4 million km) |
C/2022 E2 (ATLAS) - 2025-03-14 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 10.66 arcsec/hr, Dec -9.79 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-03-14 21:22 UT (#1301051-55) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) Image details as left |
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| C/2022 E2 (ATLAS) - 2025-04-01 (passing through Andromeda) Sun Distance 4.07 AU (receeding) Earth Distance 4.73 AU (707.1 million km) |
C/2022 E2 (ATLAS) - 2025-04-01 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 14.01 arcsec/hr, Dec -2.52 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-01 21:02 UT (#1308007-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) Image details as left |
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| C/2022 E2 (ATLAS) - 2025-05-06 (passing through Andromeda) Sun Distance 4.21 AU (receeding) Earth Distance 5.00 AU (748.4 million km) |
C/2022 E2 (ATLAS) - 2025-05-06 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 12.09 arcsec/hr, Dec 7.26 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-06 01:42 UT (#1320094-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| Images of C/2022 E2 (ATLAS) on Comets 2023 Page >> | ||
| Images of C/2022 E2 (ATLAS) on Comets 2024 Page >> |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-18 (passing through Delphinus) Sun Distance 3.05 AU (receeding) Earth Distance 3.54 AU (529.2 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-18 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 5.30 arcsec/hr, Dec 25.48 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 03:32 UT (#1302198-200) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-18 03:32 UT (#1302198-200) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-19 (passing through Delphinus) Sun Distance 3.07 AU (receeding) Earth Distance 3.54 AU (529.4 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-19 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 4.73 arcsec/hr, Dec 25.59 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-19 03:56 UT (#1303172-74) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 9 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-19 03:58 UT (#1303172-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-20 (passing through Delphinus) Sun Distance 3.08 AU (receeding) Earth Distance 3.54 AU (529.6 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-20 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 4.17 arcsec/hr, Dec 25.70 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 10 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-20 03:39 UT (#1304201-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-24 (passing through Delphinus) Sun Distance 3.13 AU (receeding) Earth Distance 3.54 AU (530.2 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-24 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 1.81 arcsec/hr, Dec 26.09 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 10 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-03-24 03:22 UT (#1305089-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-29 (passing through Delphinus) Sun Distance 3.19 AU (receeding) Earth Distance 3.55 AU (530.3 million km) Poor quality image (single frame) Comet is barely visible |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-29 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -1.35 arcsec/hr, Dec 26.50 arcsec/hr) Poor quality image (single frame) |
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| Annotated CCD Image (50% size, square root scale) 30s exposure (single frame), 3x3 binning, Clear Filter 2025-03-29 03:56 UT (#1306178) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 30s exposure (single frame), 3x3 binning, Clear Filter 2025-03-29 03:56 UT (#1306178) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-01 (passing through Delphinus) Sun Distance 3.23 AU (receeding) Earth Distance 3.54 AU (530.2 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-01 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -3.31 arcsec/hr, Dec 26.68 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-01 03:04 UT (#1307123-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 10 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-01 03:07 UT (#1307123-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-02 (passing through Delphinus) Sun Distance 3.24 AU (receeding) Earth Distance 3.54 AU (530.1 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-02 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -3.96 arcsec/hr, Dec 26.73 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-02 02:18 UT (#1308160-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 9 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-02 02:18 UT (#1308160-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-04 (passing through Delphinus) Sun Distance 3.27 AU (receeding) Earth Distance 3.54 AU (529.8 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-04 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -5.37 arcsec/hr, Dec 26.81 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-04 03:39 UT (#1310155-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped) 10 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-04 03:41 UT (#1310155-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-11 (passing through Delphinus) Sun Distance 3.36 AU (receeding) Earth Distance 3.53 AU (528.6 million km) |
C/2023 A3 (Tsuchinshan-ATLAS) - 2025-04-11 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -10.29 arcsec/hr, Dec 26.92 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-11 01:12 UT (#1314119-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) 9 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-04-11 01:12 UT (#1314116-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >> |
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| C/2023 C2 (ATLAS) - 2025-06-02 (passing through Andromeda) Sun Distance 3.19 AU Earth Distance 3.44 AU (514.3 million km) |
C/2023 C2 (ATLAS) - 2025-06-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 26.44 arcsec/hr, Dec 49.16 arcsec/hr) Poor quality image (bright uneven sky background) |
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| Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-06-02 01:12 UT (#1331039-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (125% size, square root scale, cropped) Image details as left |
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| C/2025 F2 (SWAN) - 2025-04-10 (passing through Pegasus) Sun Distance 0.67 AU Earth Distance 1.35 AU (201.4 million km) |
C/2025 F2 (SWAN) - 2025-04-10 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 218.19 arcsec/hr, Dec 111.89 arcsec/hr) |
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| Annotated CCD Image (50% size, log scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2025-04-10 03:27 UT (#1313182) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, log scale, cropped) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 03:32 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2025 F2 (SWAN) - 2025-04-10, Movement Animated gif covering a 7 minute period showing relatively rapid movememt of come relative to background stars (Ra 218.19 arcsec/hr, Dec 111.89 arcsec/hr) |
C/2025 F2 (SWAN) - 2025-04-10 Detail Showing faint tail |
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| Annotated CCD Image (50% size, log scale) 7 x 60s frames 3x3 binning, Clear Filter 2025-04-10 03:27 to 03:36 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (70% size, log scale, cropped) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 03:32 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2025 F2 (SWAN) - 2025-04-10, Wider View Image | C/2025 F2 (SWAN) - 2025-04-10, Wider View Image | |
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| Cam2 Reference Image (12% size, linear scale) 10s exposure, 1x1 binning 2025-04-10 03:23 UT (04:32 LT) TS 80mm + ZWO 174MC |
Cam2 Reference Image (12% size, linear scale) 10s exposure, 1x1 binning 2025-04-10 03:23 UT (04:32 LT) TS 80mm + ZWO 174MC |
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| C/2025 F2 (SWAN) - 2025-04-12 (passing through Pegasus) Sun Distance 0.62 AU (approaching) Earth Distance 1.29 AU (193.6 million km) |
C/2025 F2 (SWAN) - 2025-04-12 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 247.45 arcsec/hr, Dec 112.16 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2025-04-12 03:23 UT (#1315172) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, log scale, cropped) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-12 03:25 UT (#1315171-74) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2025 F2 (SWAN) - 2025-04-12 Detail Highlighting the comet's thin but obvious tail |
C/2025 F2 (SWAN) - 2025-04-12 Detail Showing faint tail |
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| Negative CCD Image (50% size, square root scale) Image details as above |
Annotated CCD Image (70% size, log scale, cropped) Image details as above |
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| This Web Page: | Comet Images - 2025 |
| Last Updated : | 2025-06-02 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
