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 Supernovae - 2011

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Supernovae (2011)
 
  SN Name, type, discovery date, host
Bullet SN 2011D - Type IIb Supernova (2011-01-05) in UGC 2498
Bullet SN 2011H - Type Ia Supernova (2011-01-04) in UGC 1837
Bullet SN 2011ac - Type Ia Supernova (2011-02-11) in UGC 4552
Bullet SN 2011ag - Type Ia Supernova (2011-02-25) in PGC 11943
Bullet SN 2011ao - Type Ia Supernova (2011-03-03) in IC 2973
Bullet SN 2011ay - Type Ia Supernova (2011-03-18) in NGC 2315
Bullet SN 2011az - Type IIp Supernova (2011-03-18) in IC 3862 / ARP 265
Bullet SN 2011be - Type Ia Supernova (2011-03-25) in UGC 4985
Bullet SN 2011by - Type Ia Supernova (2011-04-26) in NGC 3972
Bullet SN 2011ca - Type Ic Supernova (2011-04-26) in NGC 4495
Bullet SN 2011fe - Type Ia Supernova (2011-08-24) in M101
   
  This page documents observations and images of supernova with discovery dates in 2011.
(Note: Some images may roll over into the following year)

SN 2011D - Type IIb Supernova (discovered 2011-01-05) in UGC 2498

UGC 2498 with SN 2011D (Andromeda)
Supernova 2011D (Type IIb) was discovered 2011/01/05.09 by Catalina Real-Time Transient Survey 
and Stan Howerton; Lick Observatory Supernova Search
Discovery Magnitude 18.2
(Rochester Supernova site | Stan Howerton image | Reference Image | TNS 2011D )
 
UGC 2498 with SN 2011D - 2011-01-12 (T+7.7d)
Image below (2011-01-12.75) was taken 7.7 days after discovery.
Position of SN 2011D (very faint)is marked by white cross hair and is very faint.
Poor image quality (due to poor sky transparency and noise associated with moon light)
Image
Annotated CCD Image (cropped)
5 x 120s exposure (average combine), 3x3 binning, C Filter 
2011-01-12 17:55 hUT (#444061-65)
12" LX200R  (at f/9.7) + ST-10XME
Image
  Negative CCD Image (cropped)
Image details as above

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SN 2011H - Type Ia Supernova (discovered 2011-01-04) in UGC 1837

UGC 1837 with SN 2011H (Andromeda)
SN 2011H (Type Ia) was discovered 2011/01/04.26 by Lick Observatory Supernova Search
Discovery Magnitude 15.6
(Rochester Supernova site | Discovery Image | Reference Image  | TNS 2011H )
 
UGC 1837 with SN 2011H -  2011-01-14 (T+10.6d)
Image below (2011-01-14.91) was taken 10.6 days after discovery.
SN 2011H is marked by white cross hair (est. mag +16.6)
Image
Annotated CCD Image (cropped, 150% size)
3 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-01-14 21:56 hUT (#445023-27)
12" LX200R  (at f/9.7) + ST-10XME
Image
  Negative CCD Image (cropped, 150% size)
Image details as above
UGC 1837 and adjacent galaxies
Image
Annotated CCD Image (cropped)
Image details as above

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SN 2011ac - Type Ia Supernova (discovered 2011-02-11) in UGC 4552

UGC 4552 with SN 2011ac (Aries)
SN 2011ac (Type Ia) was discovered 2011/02/11.290 by Lick Observatory Supernova Search
Discovery Magnitude 17.7
(Rochester Supernova site | Discovery Image | Reference Image | TNS 2011ac )
 
UGC 4552 with SN 2011ac - 2011-02-27 (T+25d)
Image below (2011-02-27.04) was taken 25 days after discovery.
Position of SN (faint) is marked by white cross hair
Image
Annotated CCD Image (cropped)
5 x 120s exposure (average combine), 3x3 binning, C Filter 
2011-02-27 01:02 hUT (#458274-78)
12" LX200R  (at f/9.7) + ST-10XME
 

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SN 2011ag - Type Ia Supernova (discovered 2011-02-25) in PGC 11943

PGC 11943 with SN 2011ag (Aries)
SN 2011ag (Type Ia) was discovered 2011/02/25.150 by Catalina Real-Time Transient Survey
Discovery Magnitude17.3
(Rochester Supernova site | Discovery Image | Reference Image | TNS 2011ag )
 
PGC 11943 with SN 2011ag - 2011-02-26 (T+1.7d)
Image below (2011-02-26.84) was taken 1.7 days after discovery.
Position of SN 2011ag (very faint) is shown by white cross hairs
Image
Annotated CCD Image (cropped)
2 x 120s exposure (average combine), 3x3 binning, C Filter 
2011-02-26 20:04 hUT (#458044-45)
12" LX200R  (at f/9.7) + ST-10XME
Images of SN 2011ag (in PGC 11943) on Supernova 2011 Page >>

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SN 2011ao - Type Ia Supernova (discovered 2011-03-03) in IC 2973

IC 2973 with SN 2011ao (Ursa Major)
SN 2011ao (Type Ia) was discovered discovered 2011/03/03.434 by A. Kroes, Jack Newton, and Tim Puckett
Discovery Magnitude 17.1
(Rochester Supernova site | Discovery Image | TNS 2011ao )
 
IC 2973 with SN 2011ao - 2011-03-07 (T+9d)
Image below (2011-03-07.90) was taken 9 days after discovery.
SN 2011ao is marked by white cross hair
Image
Annotated CCD Image (cropped)
3 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-07 21:31 hUT (#461185-87)
12" LX200R  (at f/9.7) + ST-10XME
 
IC 2973 with SN 2011ao - 2011-03-19 (T+20.2d)
Image below (2011-03-19.06) was taken 20.2 days after discovery.
SN 2011ao is marked by white cross hair
Estimated Magnitude +13.8 (C Filter)
Image
Annotated CCD Image (cropped)
5 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-19 01:27 hUT (#463088-92)
12" LX200R  (at f/9.7) + ST-10XME
IC 2973 with SN 2011ao - 2011-03-23 (T+25d)
Image below (2011-03-23.97) was taken 25 days after discovery of 2011ao
SN 2011ao is marked by white cross hair
Estimated Mag +13.8 (Clear Filter)
Image
Annotated CCD Image (cropped)
5 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-23 23:11 hUT (#464237-41)
12" LX200R  (at f/9.7) + ST-10XME
 

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SN 2011ay - Type Ia Supernova (discovered 2011-03-18) in NGC 2315

NGC 2315 with SN 2011ay (Lynx)
SN 2011ay (Type Ia) was discovered 2011/03/18.180 by Lick Observatory Supernova Search
Discovery Magnitude 17.7
(Rochester Supernova site | Discovery Image | Giancarlo Cortini image | Reference Image )
( TNS 2011ay )
 
NGC 2315 with SN 2011ay - 2011-01-23 (T+5.7d)
Image below (2011-03-23.88) was taken 5.7 days after discovery.
Position of SN (faint) is shown by white cross hairs
Image
Annotated CCD Image (cropped, 100% size)
5 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-01-23 21:01 hUT (#464094-987)
12" LX200R  (at f/9.7) + ST-10XME
 
 

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SN 2011az - Type IIp Supernova (discovered 2011-03-18) in IC 3862 / ARP 265

IC 3862 / ARP 265 with 2011az  (Canes Venatici)
SN 2011az (Type IIp) was discovered 2011/03/18.924 by Maurice Gavin
Original designation PSN J12535343+3605193 
Discovery Magnitude 16.2
(Rochester Supernova site | Discovery Image | 2011az Page |  Reference Image )
( TNS 2011az )
 
IC 3862 / ARP 265 with 2011az - 2011-03-23 (T+5.0d)
Image below (2011-03-23.91) was taken 5.0 days after discovery.
Position of PSN, now SN (distinct) is shown by white cross hairs
Image
Annotated CCD Image (cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-23 21:55 hUT (#464237-41)
12" LX200R  (at f/9.7) + ST-10XME
(same image on supernovae.net)
 
 

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SN 2011be - Type Ia Supernova (discovered 2011-03-25) in UGC 4985

UGC 4985 with SN 2011be (Leo)
SN 2011be (Type: Ia)  was discovered 2011/03/25.140 by Catalina Real-Time Transient Survey and Stan Howerton
Alias PSN J09225262+2159157, = SNHunt46
Magnitude at discovery ~ +16.0 ?
Discovery Magnitude 17.7
(Rochester Supernova site | Discovery Image | Stan Howerton image | Reference Image )
( TNS 2011be )
 
UGC 4985 with SN 2011be - 2011-04-06 (T+11.9d)
Image below (2011-04-06.01) was taken 11.9 days after discovery.
Estimated Magnitude +16.2 (Clear Filter)
Image
Annotated CCD Image (cropped, 100% size)
120s exposure (single frame), 3x3 binning, C Filter 
2011-04-06 00:08 hUT (#466098)
12" LX200R  (at f/9.7) + ST-10XME
 
Images of SN 2011be (in UGC 4985) on Supernova 2011 Page >>

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SN 2011by - Type Ia Supernova (discovered 2011-04-26) in NGC 3972

NGC 3972 with SN 2011by (Leo)
SN 2011by (Type Ia) was discovered 2011/04/26.823 by Zhangwei Jin and Xing Gao
Discovery Magnitude 14.2
( Rochester Supernova site | Discovery Image | TNS 2011by )
 

NGC 3972 - Spiral Galaxy with SN 2011by  (T+5.1d)
Image
Annotated CCD Image (50% size)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-05-01 22:38 h UT  (#474041-45)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 3972 with SN 2011by - 2011-04-28 (T+2.1d)
Image below (2011-04-28.91) was taken 2.1 days after SN discovery.
Position of SN 2011 (distinct, brightening?) is marked by white cross hair
Estimated Mag +13.8 (Clear Filter)
Image
Annotated CCD Image (100% size, cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-28 21:56 h UT  (#471048-52)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 3972 with SN 2011by - 2011-04-29 (T+3.1d)
Image below (2011-04-29.93) was taken 3.1 days after SN discovery.
Position of SN 2011 (distinct, brightening) is marked by white cross hair
Estimated Mag +13.3 (Clear Filter)
Image
Annotated CCD Image (100% size, cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-29 22:21 h UT  (#472029-33)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 3972 with SN 2011by - 2011-04-30 (T+4.0d)
Image below (2011-04-30.93) was taken 4.0 days after SN discovery.
Position of SN 2011(distinct) is shown by white cross hair
Estimated Mag +13.3 (Clear Filter)
Image
Annotated CCD Image (100% size, cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-30 22:14 h UT  (#473037-41)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 3972 with SN 2011by - 2011-05-01 (T+5.1d) 
Image below (2011-05-01.94) was taken 5.1 days after SN discovery.
SN 2011by is marked by white cross hair
Estimated Magnitude +13.0 (Clear Filter)
Image
Annotated CCD Image (100% size, cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-05-01 22:38 h UT  (#474041-45)
12" LX200R  (at f/9.7) + ST-10XME
 

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SN 2011ca - Type Ic Supernova (discovered 2011-04-26) in NGC 4495

NGC 4495 with SN 2011ca (Coma Berenices)
SN 2011ca (Type Ic) was discovered 2011/04/26.940 by Fabrizio Ciabattari and E. Mazzoni
Magnitude at discovery +17.2
(Rochester Supernova site | Discovery Image | TNS 2011ca )
 
NGC 4495 with SN 2011ca -  2011-05-01 (T+5.0d)
Image below (2011-05-01.94) was taken 5.0 days after SN discovery.
Position of SN (faint but distinct) is indicated by white cross hair
Estimated Magnitude +16.4 (Clear Fiter)
Image
Annotated CCD Image (cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-05-01 22:28 h UT  (#474034-38)
12" LX200R  (at f/9.7) + ST-10XME
 
 

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SN 2011fe - Type Ia Supernova (discovered 2011-08-24) in M101

M101 with SN 2011fe  (Ursa Major)
SN 2011fe (= PTF11kly) (Type Ia) was discovered 2011/08/24.00 by Palomar Transient Factory
Discovery Magnitude 17.2
( Rochester Supernova site | Discovery Image | TNS 2011fe )

(Possible query on precise time of discovery ?)

SN 2011fe is reported as being the nearest Type 1a supernova seen in decades.
It has brightened significantly since discovery and by 2011-08-27 had reached mag +12.3 

Image below (2011-08-25.91) was taken only ~ 1.9 days after SN discovery.  
SN 2011fe is marked by the white cross hair. 
Est Mag +13.4. 

Image
Annotated CCD Image 
9 x 60 sec exposure (average combine), 3x3 binning, C Filter 
2011-08-25 21:41 h UT  (#477019-28)
12" LX200R  (at f/9.7) + ST-10XME
 
M101 - Earlier Image (2009)
 M101 with SN 2011fe (T+1.9d)
Supernova shown by white cross-hairs
Image Image
CCD Image (cropped) 
9 x 60 sec (average combine),  3x3 binning, C Filter
2009-08-24 22:00 h UT  (#386001-10)
12" LX200R  (at f/5.7) + ST-10XME 		Annotated CCD Image (58% size, cropped)
9 x 60 sec exposure (average combine), 3x3 binning, C Filter 
2011-08-25 21:41 h UT  (#477019-28)
12" LX200R  (at f/9.7) + ST-10XME
     
M101 with SN 2011fe (T+41d)
 (just after max brightness)
SN Est. Mag +10.5		   M101 with SN 2011fe (T+419d)
much later image
SN Est. Mag  only just visible, ~ 17.2
Image Image

Annotated CCD Image 
(58% size, cropped)
11 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-10-03 20:28 h UT  (#479003-14)
12" LX200R  (at f/9.7) + ST-10XME

 Annotated CCD Image 
(58% size, cropped)
10 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-10-15 19:49 h UT  (#515124-33)
12" LX200R  (at f/9.7) + ST-10XME
     
Normal Image of M101 with supernova 2011fe Spectral Image of M101 with supernova 2011fe
Image Image
Annotated CCD Image (50% size)
12 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-01 19:13 h UT  (#482011-22)
12" LX200R  (at f/9.7) + ST-10XME		 Annotated Spectral CCD Image (17% size)
4 x 90 sec exposure (average combine), 
3x3 binning, S Filter (Star Analyser 100)
2011-11-01 19:26 h UT  (#482024-27)
12" LX200R  (at f/9.7) + ST-10XME

 
Image
Spectral CCD Image (100% size, rotated, cropped)
Images details as above right

 
Image
Spectral Profile - uncalibrated
(produced using RSpec Software
SN 2011fe Light Curve
Image
M101 (pre-SN image)    
     
Image Earlier Image of M101
2009 (pre-SN)

CCD Image 
(cropped) 
9 x 60 sec (average combine),  
3x3 binning, C Filter
2009-08-24 22:00 h UT  (#386001-10)
12" LX200R  (at f/5.7) + ST-10XME
 
Images of M101 with SN 2011fe (T+1.9d to T+419d)
Image First Image of
M101 with SN 2011fe (T+1.9d)
2011-08-25.91
~ 1.9 days after SN discovery
SN Est. Mag 
+13.4

Annotated CCD Image 
(58% size, cropped)
9 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-08-25 21:41 h UT  (#477019-28)
12" LX200R  (at f/9.7) + ST-10XME
     
Image M101 with SN 2011fe (T+37d)
2011-09-29.88
37 days after SN discovery
SN Est. Mag 
~ +11.1

Annotated CCD Image 
(58% size, cropped)
4 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-09-29 21:04 h UT  (#478008-11)
12" LX200R  (at f/9.7) + ST-10XME
Note : Poor sky transparency 
+ frost on edges of CCD

 
Image M101 with SN 2011fe (T+41d)
2011-10-03.85
41 days after SN discovery
SN Est. Mag 
+10.5

Annotated CCD Image 
(58% size, cropped)
11 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-10-03 20:28 h UT  (#479003-14)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+54d)
2011-10-16.83
54 days after SN discovery
SN Est. Mag 
+11.2

Annotated CCD Image 
(58% size, cropped)
7 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-10-16 20:00 h UT  (#480169-78)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+65d)
2011-10-27.85
65 days after SN discovery
SN Est. Mag 
+11.7

Annotated CCD Image 
(58% size, cropped)
12 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-10-27 20:20 h UT  (#481008-19)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+70d)
2011-11-01.85
70 days after SN discovery
SN Est. Mag 
+11.9

Annotated CCD Image 
(58% size, cropped)
12 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-01 19:13 h UT  (#482011-22)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+75d)
2011-11-06.90
75 days after SN discovery
SN Est. Mag 
+12.1

Annotated CCD Image 
(58% size, cropped)
10 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-06 21:32 h UT  (#483004-14)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+90d)
2011-11-21.84
90 days after SN discovery
SN Est. Mag 
+12.5

Annotated CCD Image 
(58% size, cropped)
11 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-21 20:10 h UT  (#486016-26)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+96d)
2011-11-27.84
96 days after SN discovery
SN Est. Mag 
+12.6

Annotated CCD Image 
(58% size, cropped)
8 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-27 20:11 h UT  (#488012-20)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+114d)
2011-12-15.78
114 days after SN discovery
SN Est. Mag 
+13.1

Annotated CCD Image 
(58% size, cropped)
8 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2011-12-15 18:43 h UT  (#490110-19)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+131d)
2012-01-01
131 days after SN discovery
SN Est. Mag 
+13.4

Annotated CCD Image 
(58% size, cropped)
6 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-01-01 23:46 h UT  (#494143-51)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+146d)
2012-01-16
146 days after SN discovery
SN Est. Mag 
+13.8

Annotated CCD Image 
(58% size, cropped)
9 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-01-16 20:38 h UT  (#497140-48)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+157d)
2012-01-28
157 days after SN discovery
SN Est. Mag 
+14.0

Annotated CCD Image 
(58% size, cropped)
7 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-01-28 00:28 h UT  (#499122-31)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+164d)
2012-02-03
164 days after SN discovery
SN Est. Mag 
+14.1

Annotated CCD Image 
(58% size, cropped)
8 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-02-03 22:55 h UT  (#500113-20)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+216d)
2012-03-26
216 days after SN discovery
SN Est. Mag 
+15.0

Annotated CCD Image 
(58% size, cropped)
11 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-03-26 22:42 h UT  (#507066-74)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+238d)
2012-03-26
238 days after SN discovery
SN Est. Mag 
+15.3

Annotated CCD Image 
(58% size, cropped)
10 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-04-17 22:41 h UT  (#510084-93)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+249d)
2012-04-28
249 days after SN discovery
SN Est. Mag 
+15.4

Annotated CCD Image 
(58% size, cropped)
10 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-04-28 22:12 h UT  (#511114-23)
12" LX200R  (at f/9.7) + ST-10XME
Image Detail  (T+249d)

Annotated CCD Image 
(cropped)
8 x 120 sec exposure (average combine), 
2x2 binning, C Filter 
2012-04-28 22:38 h UT  (#511129-37)
12" LX200R  (at f/9.7) + ST-10XME

249 days after SN discovery
[ wider view ]

 
Image M101 with SN 2011fe (T+346d)
2012-08-03
346 days after SN discovery
SN Est. Mag 
+16.5

Annotated CCD Image 
(58% size, cropped)
5 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-08-03 22:26 h UT  (#512215-19)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+414d)
2012-10-10
414 days after SN discovery
SN Est. Mag 
 not visible, > 17.2

Annotated CCD Image 
(58% size, cropped)
7 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-10-10 21:24 h UT  (#514050-58)
12" LX200R  (at f/9.7) + ST-10XME

 
Image M101 with SN 2011fe (T+419d)
2012-10-15
419 days after SN discovery
SN Est. Mag 
 only just visible, ~ 17.2

Annotated CCD Image 
(58% size, cropped)
10 x 60 sec exposure (average combine), 
3x3 binning, C Filter 
2012-10-15 19:49 h UT  (#515124-33)
12" LX200R  (at f/9.7) + ST-10XME

 

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This Web Page: Supernovae - 2011
Last Updated : 2024-06-17
Site Owner : David Richards
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