David's Astronomy Pages Images - Session 1437 (2026-06-30)

Images (S1436)

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Image (S1438)

Objects	Session Notes
UGC 11058 - Spiral Galaxy with Type Ia Supernova 2026ewd   Variable Stars (photometric monitoring) - T CrB, SS Cyg, BL Lac, KIC 8462852 (Tabby's Star)   Nearby Stars (astrometric monitoring) - Barnard's Star, 61 Cyg	- All-Night Session (1.5 hr). Short summer night. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9.5°C (min) - CCD Temperature:  -10°C - Notes from 2026-06-30 >> - -

Observing Result

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UGC 11058  - Spiral Galaxy with Type Ia Supernova 2026ewd

UGC 11058 with SN 2026ewd (Hercules) SN 2026ewd (Type: Ia) discovered 2026-03-05.583 UT by ATLAS Alias: ATLAS26cph, GOTO26bqj, ZTF26aajugdc Discovery Magnitude 17.346 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.52 (cyan-ATLAS Filter) ( TNS 2026ewd )

UGC 11058 with SN 2026ewd - 2026-07-01 (T+117.4d) Image below (2026-07-01.000) was taken 117.4 days after discovery of 2026ewd Position of earlier supernova (faint) is shown by white cross-hairs Estimated Magnitude +17.6 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-07-01 00:06 UT (#1437020-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2026ewd (in UGC 11058) on Supernovae 2026 Page  >>

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