This data comes from
IAU Circulars
and occasionally more data will be provided on
IAU 's
Astronomical Headlines page.
An archive of the 2004 updates
to this page is available.
This is a archive of the supernovae discovered in 2012.
For supernovae that are still visible, please look at the
main page .
Please look in the
Archive page
for a complete list.
Note that Extra galactic Novae have been moved to a special
Extra galactic novae page .  
For more information,
you can look at the following Supernova Catalogs:
IAU List of Supernovae since 1885
For the year 2004,
264 supernovae have been reported
(338 last year ).  
64 in NGC and IC galaxies (73 last year),
126 got brighter than 18th Mag (148 last year). 
30 extragalactic novae were also reported. 
The brightest supernova reported for the year is
2004dj at mag 11.2,
followed by
2004et at mag 12.3,
and 2004gk at mag 13.3.
Interesting events in 2004
2004dj in nearby
NGC 2403
reached Mag 11.2 (type IIn).  
This was the brightest supernova since
1987A .
Our most active galaxy,
NGC 6946
had it's 8th supernova,
2004et
which reached Mag 12.3
We have two supernovae in Messier galaxies.
2004W in
M60
(type Ia found after solar conjunction, probably a 1/2 year old at discovery)
2004am in
M82
(found by image subtraction, in an HII region in this very active galaxy)
SPC-0401
(= Mingus)
(= SN150G)
unannounced
discovered 2004/04/03 by
HST
(GOODS North field)
at R.A. = 12h37m09s.5, Decl. = +62°22'15".5
Mag 25.2, Type Ia (z=1.71) (offset=0.8)
(LBL article )
(Paper )
90 supernovae
Paper
discovered by
Supernova Legacy Project
SNLS-04D1ag
discovered 2004/01/01
at R.A. = 02h24m41s.125, Decl. = -04°17'19".66
Mag > 25.0, Type Ia (z=0.557)
SNLS-04D1aj
discovered 2004/01/01
at R.A. = 02h25m53s.982, Decl. = -04°59'40".50
Mag > 25.0, Type Ia (z=0.72)
SNLS-04D1ak
discovered 2004/01/01
at R.A. = 02h27m33s.399, Decl. = -04°19'38".73
Mag > 25.0, Type Ia (z=0.526)
SNLS-04D2ac
discovered 2004/01/01
at R.A. = 10h00m18s.923, Decl. = +02°41'21".63
Mag > 25.0, Type Ia (z=0.348)
SNLS-04D2ae
discovered 2004/01/21
at R.A. = 10h01m52s.361, Decl. = +02°13'21".27
Mag > 25.0, Type Ia (z=0.843)
SNLS-04D2bt
discovered 2004/03/20
at R.A. = 09h59m32s.725, Decl. = +02°14'53".07
Mag > 25.0, Type Ia (z=0.220)
SNLS-04D2cf
discovered 2004/03/21
at R.A. = 10h01m56s.110, Decl. = +01°52'46".40
Mag > 25.0, Type Ia (z=0.369)
SNLS-04D2cw
discovered 2004/03/20
at R.A. = 10h01m22s.787, Decl. = +02°11'55".31
Mag > 25.0, Type Ia (z=0.568)
SNLS-04D2al
discovered 2004/01/01
at R.A. = 10h01m52s.482, Decl. = +02°09'51".25
Mag > 25.0, Type Ia (z=0.84)
SNLS-04D2an
discovered 2004/01/01
at R.A. = 10h00m52s.332, Decl. = +02°02'28".73
Mag > 25.0, Type Ia (z=0.62)
SNLS-04D2ca
discovered 2004/01/01
at R.A. = 10h01m20s.514, Decl. = +02°20'21".76
Mag > 25.0, Type Ia (z=0.83)
SNLS-04D2fp
discovered 2004/01/01
at R.A. = 09h59m28s.162, Decl. = +02°19'15".58
Mag > 25.0, Type Ia (z=0.415)
SNLS-04D2fs
discovered 2004/01/01
at R.A. = 10h00m22s.110, Decl. = +01°45'55".70
Mag > 25.0, Type Ia (z=0.357)
SNLS-04D2gb
discovered 2004/04/21
at R.A. = 10h02m22s.676, Decl. = +01°53'39".34
Mag > 25.0, Type Ia (z=0.43)
SNLS-04D2gc
discovered 2004/04/22
at R.A. = 10h01m39s.281, Decl. = +01°52'59".36
Mag > 25.0, Type Ia (z=0.521)
SNLS-04D2gp
discovered 2004/04/20
at R.A. = 09h59m20s.400, Decl. = +02°30'31".88
Mag > 25.0, Type Ia (z=0.71)
SNLS-04D2iu
discovered 2004/05/13
at R.A. = 10h01m13s.221, Decl. = +02°24'53".91
Mag > 25.0, Type Ia (z=0.69)
SNLS-04D2ja
discovered 2004/05/13
at R.A. = 09h58m48s.519, Decl. = +01°46'18".64
Mag > 25.0, Type Ia (z=0.74)
SNLS-04D3bf
discovered 2004/02/18
at R.A. = 14h17m45s.096, Decl. = +52°28'04".31
Mag > 25.0, Type Ia (z=0.156)
SNLS-04D3co
discovered 2004/04/21
at R.A. = 14h17m50s.030, Decl. = +52°57'48".95
Mag > 25.0, Type Ia (z=0.62)
SNLS-04D3cp
discovered 2004/04/23
at R.A. = 14h20m23s.954, Decl. = +52°49'15".45
Mag > 25.0, Type Ia (z=0.83)
SNLS-04D3cy
discovered 2004/04/19
at R.A. = 14h18m12s.452, Decl. = +52°39'30".40
Mag > 25.0, Type Ia (z=0.643)
SNLS-04D3dd
discovered 2004/04/26
at R.A. = 14h17m48s.411, Decl. = +52°28'14".57
Mag > 25.0, Type Ia (z=1.01)
SNLS-04D3df
discovered 2004/04/21
at R.A. = 14h18m10s.042, Decl. = +52°16'39".85
Mag > 25.0, Type Ia (z=0.47)
SNLS-04D3do
discovered 2004/04/21
at R.A. = 14h17m46s.113, Decl. = +52°16'03".36
Mag > 25.0, Type Ia (z=0.61)
SNLS-04D3ez
discovered 2004/04/22
at R.A. = 14h19m07s.894, Decl. = +53°04'19".17
Mag > 25.0, Type Ia (z=0.263)
SNLS-04D3fk
discovered 2004/04/22
at R.A. = 14h18m26s.198, Decl. = +52°31'42".74
Mag > 25.0, Type Ia (z=0.358)
SNLS-04D3fq
discovered 2004/04/27
at R.A. = 14h16m57s.902, Decl. = +52°22'46".46
Mag > 25.0, Type Ia (z=0.73)
SNLS-04D3gt
discovered 2004/05/23
at R.A. = 14h22m32s.611, Decl. = +52°38'49".30
Mag > 25.0, Type Ia (z=0.451)
SNLS-04D3gx
discovered 2004/05/21
at R.A. = 14h20m13s.666, Decl. = +52°16'58".33
Mag > 25.0, Type Ia (z=0.91)
SNLS-04D3hn
discovered 2004/05/22
at R.A. = 14h22m06s.908, Decl. = +52°13'43".00
Mag > 25.0, Type Ia (z=0.552)
SNLS-04D3is
discovered 2004/05/23
at R.A. = 14h16m51s.968, Decl. = +52°48'45".70
Mag > 25.0, Type Ia (z=0.71)
SNLS-04D3ki
discovered 2004/05/23
at R.A. = 14h19m34s.598, Decl. = +52°17'32".61
Mag > 25.0, Type Ia (z=0.930)
SNLS-04D3kr
discovered 2004/06/16
at R.A. = 14h16m35s.943, Decl. = +52°28'44".02
Mag > 25.0, Type Ia (z=0.337)
SNLS-04D3ks
discovered 2004/05/23
at R.A. = 14h22m33s.479, Decl. = +52°11'07".44
Mag > 25.0, Type Ia (z=0.752)
SNLS-04D3lp
discovered 2004/05/27
at R.A. = 14h19m50s.911, Decl. = +52°30'11".88
Mag > 25.0, Type Ia (z=0.983)
SNLS-04D3lu
discovered 2004/06/23
at R.A. = 14h21m08s.009, Decl. = +52°58'29".74
Mag > 25.0, Type Ia (z=0.822)
SNLS-04D3mk
discovered 2004/06/19
at R.A. = 14h19m25s.768, Decl. = +53°09'49".48
Mag > 25.0, Type Ia (z=0.813)
SNLS-04D3ml
discovered 2004/06/20
at R.A. = 14h16m39s.095, Decl. = +53°05'35".89
Mag > 25.0, Type Ia (z=0.95)
SNLS-04D3nc
discovered 2004/07/13
at R.A. = 14h16m18s.224, Decl. = +52°16'26".09
Mag > 25.0, Type Ia (z=0.817)
SNLS-04D3nh
discovered 2004/06/23
at R.A. = 14h22m26s.729, Decl. = +52°20'00".92
Mag > 25.0, Type Ia (z=0.340)
SNLS-04D3nq
discovered 2004/07/14
at R.A. = 14h20m19s.193, Decl. = +53°09'15".90
Mag > 25.0, Type Ia (z=0.22)
SNLS-04D3nr
discovered 2004/07/15
at R.A. = 14h22m38s.526, Decl. = +52°38'55".89
Mag > 25.0, Type Ia (z=0.96)
SNLS-04D3ny
discovered 2004/07/10
at R.A. = 14h18m56s.332, Decl. = +52°11'15".06
Mag > 25.0, Type Ia (z=0.81)
SNLS-04D3oe
discovered 2004/07/11
at R.A. = 14h19m39s.381, Decl. = +52°33'14".21
Mag > 25.0, Type Ia (z=0.756)
SNLS-04D4an
discovered 2004/07/13
at R.A. = 22h15m57s.119, Decl. = -17°41'43".93
Mag > 25.0, Type Ia (z=0.613)
SNLS-04D4bk
discovered 2004/07/13
at R.A. = 22h15m07s.681, Decl. = -18°03'36".79
Mag > 25.0, Type Ia (z=0.84)
SNLS-04D4bq
discovered 2004/07/16
at R.A. = 22h14m49s.391, Decl. = -17°49'39".37
Mag > 25.0, Type Ia (z=0.55)
SNLS-04D4dm
discovered 2004/07/19
at R.A. = 22h15m25s.470, Decl. = -17°14'42".71
Mag > 25.0, Type Ia (z=0.811)
SNLS-04D4dw
discovered 2004/07/19
at R.A. = 22h16m44s.667, Decl. = -17°50'02".38
Mag > 25.0, Type Ia (z=0.96)
10 supernovae
CBAT PSN
discovered by
R. Gibbons
K0404-001
discovered 2004/04/02.08
at R.A. = 12h36m20s.90, Decl. = +62°10'19".6
Mag 25.4, Type unknown (offset 0.5W, 0.5S)
K0404-002
discovered 2004/04/02.08
at R.A. = 12h36m25s.93, Decl. = +62°09'37".4
Mag 23.7, Type unknown (offset 0.0E, 0.7S)
K0404-003
discovered 2004/04/02.08
at R.A. = 12h36m29s.44, Decl. = +62°11'41".9
Mag 24.4, Type unknown (offset 0.0W, 0.0N)
K0404-004
discovered 2004/04/02.74
at R.A. = 12h36m19s.86, Decl. = +62°13'48".0
Mag 25.1, Type unknown (offset 0.1E, 0.1S)
K0404-005
discovered 2004/04/02.74
at R.A. = 12h36m27s.07, Decl. = +62°15'09".6
Mag 24.4, Type unknown (offset 0.2E, 0.1S)
K0404-006
discovered 2004/04/03.40
at R.A. = 12h37m06s.73, Decl. = +62°21'17".8
Mag 25.4, Type unknown (offset 0.0W, 0.0S)
K0404-007
discovered 2004/04/03.40
at R.A. = 12h37m09s.44, Decl. = +62°22'15".6
Mag 25.1, Type unknown (offset 0.3E, 0.8N)
K0404-008
discovered 2004/04/03.34
at R.A. = 12h38m03s.58, Decl. = +62°17'11".9
Mag 24.7, Type unknown (offset 1.0W, 0.2N)
K0404-009
discovered 2004/04/03.54
at R.A. = 12h37m21s.32, Decl. = +62°09'35".2
Mag 25.7, Type unknown (offset 0.1W, 0.1N)
K0404-010
discovered 2004/04/04.71
at R.A. = 12h36m46s.07, Decl. = +62°16'25".7
Mag 25.8, Type unknown (offset 0.1E, 0.2S)
K0404-011
discovered 2004/04/04.71
at R.A. = 12h36m49s.36, Decl. = +62°16'04".8
Mag 24.9, Type unknown (offset 0.0E, 0.0S)
10 supernovae
CBAT PSB
discovered by
L. Strolger
K0405-001
discovered 2004/05/21.24
at R.A. = 12h35m50s.78, Decl. = +62°10'38".2
Mag 24.5, Type unknown (offset 0.1E, 0.3N)
K0405-002
discovered 2004/05/20.24
at R.A. = 12h36m26s.66, Decl. = +62°08'30".2
Mag 25.0, Type unknown (offset 0.4W, 0.0N)
K0405-003
(= HST04Yow )
K0405-004
(= HST04Man )
K0405-005
discovered 2004/05/21.31
at R.A. = 12h36m35s.96, Decl. = +62°17'32".3
Mag 25.6, Type unknown (offset 0.2W, 0.4S)
K0405-006
(= HST04Sas )
K0405-007
discovered 2004/05/21.44
at R.A. = 12h36m58s.45, Decl. = +62°16'37".3
Mag 23.7, Type unknown (offset 0.0E, 0.0N)
K0405-008
discovered 2004/05/20.78
at R.A. = 12h37m33s.86, Decl. = +62°19'22".3
Mag 23.8, Type unknown (offset 0.0E, 0.0N)
K0405-009
discovered 2004/05/21.18
at R.A. = 12h37m52s.67, Decl. = +62°14'08".2
Mag 25.6, Type unknown (offset 0.1W, 0.0N)
K0405-010
discovered 2004/05/21.18
at R.A. = 12h37m48s.38, Decl. = +62°13'35".4
Mag 23.2, Type unknown (offset 0.1W, 0.2N)
14 supernovae
Paper
discovered by
HST
(Discovery image )
HST04Cay
discovered 2004/08/27
at R.A. = 12h37m27s.11, Decl. = +62°12'07".7
Mag 25.0:8/27, Type Ia
HST04Eag
discovered 2004/11/06
at R.A. = 12h37m20s.75, Decl. = +62°13'41".5
Mag 25.1:11/06, Type Ia (z=1.02)
HST04Gre
discovered 2004/09/16
at R.A. = 03h32m21s.49, Decl. = -27°46'58".3
Mag 25.1:09/16, Type Ia (z=1.14)
HST04Haw
discovered 2004/11/05
at R.A. = 12h35m41s.16, Decl. = +62°11'37".2
Mag 23.9:11/5, Type Ia (z=0.49)
HST04Kur
discovered 2004/12/15
at R.A. = 03h32m36s.03, Decl. = -27°51'17".7
Mag 24.0:12/15, Type Ia (z=0.359)
HST04Mcg
discovered 2004/09/16
at R.A. = 03h32m10s.02, Decl. = -27°49'50".0
Mag 25.9:9/16, Type Ia (z=1.37)
HST04Man
(= K0405-004)
discovered 2004/05/20
at R.A. = 12h36m34s.81, Decl. = +62°15'49".1
Mag 23.2:5/20, Type Ia (z=0.854) (offset 0.7W, 0.1S)
HST04Omb
discovered 2004/12/16
at R.A. = 03h32m25s.34, Decl. = -27°45'03".0
Mag 24.7:12/16, Type Ia (z=0.975)
HST04Pat
discovered 2004/07/09
at R.A. = 12h38m09s.00, Decl. = +62°18'47".2
Mag 23.77:07/09, Type Ia (z=0.97)
HST04Rak
discovered 2004/12/16
at R.A. = 03h32m18s.15, Decl. = -27°44'10".6
Mag 24.1:12/16, Type Ia (z=0.74)
HST04Sas
(= K0405-006)
discovered 2004/05/23.67
at R.A. = 12h36m54s.11, Decl. = +62°08'22".8
Mag 24.8:5/23, Type Ia (z=1.39) (offset 0.1E, 0.3N)
HST04Tha
discovered 2004/07/10
at R.A. = 12h36m55s.17, Decl. = +62°13'04".1
Mag 25.4:V, Type Ia (z=0.954)
HST04Yow
(= K0405-003)
discovered 2004/05/19
at R.A. = 12h36m34s.33, Decl. = +62°12'13".0
Mag 22.5:5/20, Type Ia (z=0.46) (offset 0.8W, 0.2S)
2004ip
(= PSN K0409-001),
IAUC 8823
discovered 2004/09/13.1 by
ESO
at R.A. = 18h32m41s.26, Decl. = -34°11'26".7
Mag 18.2, Type IIP (z=0.0182)
(References:
CBET 858 )
2004ht - 2004io ,
IAUC 8481
discovered by
SDSS Collaboration
(References:
IAUC 8484 )
2004ht
discovered 2004/09/22
at R.A. = 01h04m48s.67, Decl. = -00°53'45".5
Mag 21.1:09/22, Type II (z=0.067)
2004hu
discovered 2004/09/22
at R.A. = 01h15m02s.42, Decl. = +00°15'42".9
Mag 19.3:09/22, Type Ia (z=0.049)
2004hv
discovered 2004/09/22
at R.A. = 23h48m25s.95, Decl. = +01°03'50".3
Mag 20.2:09/22, Type II (z=0.061)
2004hw
discovered 2004/09/22
at R.A. = 23h51m17s.35, Decl. = +01°13'39".4
Mag 20.1:09/22, Type Ia (z=0.060)
2004hx
discovered 2004/09/24
at R.A. = 02h41m12s.60, Decl. = -00°52'46".0
Mag 17.2:09/24, Type II (z=0.014)
2004hy
discovered 2004/09/24
at R.A. = 21h06m04s.25, Decl. = +01°12'57".0
Mag 20.3:09/24, Type II (z=0.058)
2004hz
discovered 2004/10/8
at R.A. = 02h05m03s.00, Decl. = +00°50'11".9
Mag 20.1:10/8, Type Ia (z=0.143)
2004ia
discovered 2004/10/08
at R.A. = 02h18m02s.30, Decl. = -00°33'32".4
Mag 19.5:10/8, Type Ia (z=0.143)
2004ib
discovered 2004/10/10
at R.A. = 02h40m56s.40, Decl. = -00°10'48".3
Mag 20.3:10/10, Type Ic (z=0.056)
2004ic
discovered 2004/10/10
at R.A. = 20h40m48s.05, Decl. = +01°02'34".2
Mag 20.5:10/10, Type II (z=0.093)
2004id
discovered 2004/10/16
at R.A. = 00h06m29s.64, Decl. = -00°28'22".3
Mag 19.6:10/16, Type Ia (z=0.144)
2004ie
discovered 2004/10/16
at R.A. = 22h01m46s.58, Decl. = +01°14'12".0
Mag 17.5:10/16, Type Ia (z=0.052)
2004if
discovered 2004/10/16
at R.A. = 22h39m08s.54, Decl. = -00°51'54".6
Mag 21.5:10/16, Type Ia (z=0.322)
2004ig
discovered 2004/10/24
at R.A. = 00h05m51s.79, Decl. = -00°59'45".1
Mag 20.6:10/24, Type Ia (z=0.183)
2004ih
discovered 2004/10/24
at R.A. = 02h15m54s.31, Decl. = +01°04'09".9
Mag 20.0:10/24, Type Ia (z=0.154)
2004ii
discovered 2004/11/03
at R.A. = 00h16m51s.80, Decl. = -00°24'56".9
Mag 20.7:11/3, Type Ia (z=0.197)
2004ij
discovered 2004/11/05
at R.A. = 01h21m11s.54, Decl. = -00°55'09".2
Mag 21.3:11/5, Type Ia (z=0.218)
2004ik
discovered 2004/11/5
at R.A. = 01h44m55s.51, Decl. = -00°05'58".1
Mag 21.3:11/5, Type Ia (z=0.169)
2004il
discovered 2004/11/05
at R.A. = 03h07m02s.69, Decl. = -00°00'40".1
Mag 19.5:11/5, Type Ia (z=0.108)
2004im
discovered 2004/11/05
at R.A. = 23h43m07s.78, Decl. = -00°07'55".5
Mag 19.8:11/5, Type Ia (z=0.14)
2004in
discovered 2004/11/11
at R.A. = 01h30m26s.06, Decl. = +00°41'32".3
Mag 20.3:11/11, Type Ia (z=0.161)
2004io
discovered 2004/11/20
at R.A. = 21h23m37s.39, Decl. = -00°28'00".6
Mag 19.7:11/20, Type Ia (z=0.150)