Registry · deep sky

DR 21

StarFormingReg SIMBAD SFR O4.5 1,133 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: 20h 39m 01.60s
Declination: +42° 19′ 37.9″
Galactic l, b: 81.681, 0.5374
Angular size: 2.2′ × 2.2′

Also known as

18 identifiers

18P 7836P 19DR 21GALEX J232349.8+451653GALEX J232349.9+451654GRS G081.70 +00.50RAFGL 2624W 1e[W70] G81.7+0.5[WM90] W 75 CO 4[WM90] W 75 NH3 2ECX6-31GAL 081.68+00.54GAL 081.681+00.54GAL 081.7+00.5[KCW94] 081.683+00.541[WAM82] 081.68+0.54[WWB83] G081.68+0.54

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
NVSS J203901+421941	Radio	4.792″	—
[H73b] B	Radio	6.043″	—
[H73b] C	Radio	7.011″	—
DR 21 Central Cluster	Cluster*	10.96″	—
[H73b] A	Radio	11.33″	—
[W71c] DR 21S	HIIReg	12.15″	—
[DKS2007] DR21-IRS 1	Infrared	13.31″	—
[DKS2007] 36	HIIReg	16.67″	—
DR 21 S	Infrared	24.96″	—
DR 21W	PartofCloud	74.47″	—
2MASS J20390285+4222001	YSO	143″	—

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/dr-21 · Registry entry updated 2026-08-14.