Registry · deep sky

W 51a

HIIReg SIMBAD HII 188 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: 19h 23m 29.30s
Declination: +14° 31′ 38.0″
Galactic l, b: 49.477, -0.3272

Also known as

4 identifiers

[M72b] G49.5a[M94] 49.5 -0.4 aW 51a[OMN2000] Region 3

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
2MASS J19232642+1430325	Star	77.61″	—
W 51b1	PartofCloud	91.11″	—
2MASX J19233591+1431288	YSO	96.53″	—
AGAL G049.481-00.356	YSO	111.9″	—
AGAL G049.459-00.351	smmRad	112″	—
AGAL G049.474-00.296	YSO	112.6″	—
W 51b	StarFormingReg	114″	—
JCMTLSP J192338.5+143038	PartofCloud	140.3″	—
BGPS G049.472-00.288	mmRad	143″	—
AGAL G049.472-00.367	smmRad	144.7″	—
[BE83] Maser 049.49-00.37	Maser	150.8″	—

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/w-51a · Registry entry updated 2026-08-14.