UPSA Object Registry
Registry · deep sky

SN 1999em

Supernova SIMBAD SN* SNIIP 737 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
04h 41m 27.04s
Declination
−02° 51′ 45.2″
Galactic l, b
199.56, -30.02
Magnitude V
13.7
Redshift z
0.0024
Radial velocity
718.64 km/s

Also known as

4 identifiers

AAVSO 0436-03CXOU J044127.2-025146SN 1999em[IWL2003] 43

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
NGC 1637 Seyfert2 23.91″ —
CDT NGC 1637 1 HIIReg 62.7″ —
CXOU J044132.9-025126 ULX Candidate 90.72″ —
LEDA 1081424 EmissionG 308.8″ —
Gaia DR3 3202031778550646400 WhiteDwarf 442.2″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

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