Registry · deep sky

DR 21 Central Cluster

Cluster* SIMBAD Cl* 13 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 00.83s
Declination: +42° 19′ 44.7″
Galactic l, b: 81.681, 0.5405
Angular size: 0.77′ × 0.58′

Also known as

9 identifiers

BGPS G081.680+00.540BGPSv2 G081.680+00.541BLAST J203902+421939JCMTSE J203901.0+421936JCMTSF J203901.0+421936DR 21 Central Cluster[ERG2015] 7444[RAB2011b] C155[SSS2011] BGPS G81.681+0.541

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
[H73b] B	Radio	5.034″	—
[W71c] DR 21S	HIIReg	5.735″	—
[DKS2007] DR21-IRS 1	Infrared	9.054″	—
[H73b] A	Radio	9.111″	—
NVSS J203901+421941	Radio	9.669″	—
[DKS2007] 36	HIIReg	10.21″	—
DR 21	StarFormingReg	10.96″	—
[H73b] C	Radio	14.05″	—
DR 21 S	Infrared	29.76″	—
DR 21W	PartofCloud	67.84″	—
2MASS J20390285+4222001	YSO	137.3″	—

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-central-cluster · Registry entry updated 2026-08-14.