Registry · deep sky

SN 1999gn

Supernova SIMBAD SN* SNIIP 40 papers

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 12h 21m 57.04s
Declination: +04° 27′ 45.7″
Galactic l, b: 284.4, 66.27
Magnitude V: 16
Redshift z: 0.0052373
Radial velocity: 1,566 km/s

Also known as

4 identifiers

2MASS J12215703+0427456AAVSO 1216+05SN 1999gnTIC 377188522

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
SN 2014dt	Supernova	33.83″	—
SDSS J122153.96+042742.5	HIIReg	46.03″	—
M 61	Seyfert2	50.88″	9.65
SN 1961I	Supernova	57.85″	—
SN 1964F	Supernova	84.54″	12
SN 2008in	Supernova	93.93″	—
SN 2006ov	Supernova	94.65″	14.9
SN 1926A	Supernova	119.3″	14.3
SN 2020jfo	Supernova	119.6″	—
2MASX J12220873+0429352	LINER	206.6″	—
LEDA 3096124	Seyfert2	327.7″	18

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/sn-1999gn · Registry entry updated 2026-08-14.