Supernova event of August 1885 in the Andromeda Galaxy
Supernova 1885
The visual band light curve of S Andromedae, adapted from Patchett et al. (1985)[1]
Event type
Supernova, supernova remnant, star, near-IR source, variable star
I pec
Date
20 August 1885 UTC
Constellation
Andromeda
Right ascension
00h 42m 43.11s
Declination
+41° 16′ 04.2′′
Epoch
J2000.0
Galactic coordinates
121.1702 -21.5741
Distance
2.6 Mly
Remnant
Unknown
Host
Andromeda Galaxy
Progenitor
Unknown
Progenitor type
Unknown
Colour (B-V)
+1.3 ~ +0.6[2]
Notable features
First and only supernova observed in Andromeda; first extragalactic supernova observed; closest type Ia observed
Peak apparent magnitude
+6
Other designations
SN 1885A, HR 182, 2MASS J00424312+4116032, BD+40 147a, S And, TIC 438234291, AAVSO 0037+40, EV* M31 V0894
Preceded by
SN 1604 (observed), Cassiopeia A (unobserved, c. 1680), G1.9+0.3 (unobserved, c. 1868)
Followed by
SN 1895B
[edit on Wikidata]
SN 1885A (also S Andromedae) was a supernova in the Andromeda Galaxy, the only one seen in that galaxy so far by astronomers. It was the first supernova ever seen outside the Milky Way,[3] though it was not appreciated at the time how far away it was. It is also known as "Supernova 1885".
^Patchett, B. E.; Stickland, D. J.; Crilly, D.; Wood, R. (December 1985). "A revised light curve for the 1885 supernova in M 31". The Observatory. 105: 232–238. Bibcode:1985Obs...105..232P.
^Cite error: The named reference devau was invoked but never defined (see the help page).
^Frommert, Hartmut; Kronberg, Christine. "S Andromedae: Supernova 1885 in M31". SEDS Messier Database. Retrieved 2017-01-22.
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