Registry · deep sky

4C 21.53W

HIIReg SIMBAD HII 21 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 39m 39.98s
Declination: +21° 37′ 28.0″
Galactic l, b: 57.548, -0.274

Also known as

7 identifiers

4C 21.53W[E83] 4C 21.53WIRAS 19375+2130[BNM96] 057.548-0.274GAL 057-00.27GAL 057.55-00.27[TGC96] 1937+2130

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
4C 21.53	Radio	7.943″	—
AGAL G057.548-00.269	smmRad	9.784″	—
[ABB2014] WISE G057.541-00.279	Bubble	24.88″	—
PSR B1937+21.4	Pulsar	150.1″	—
HD 185757	PulsV*	330.8″	8.31
HD 344739	Star	530.6″	10.44

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/4c-21-53w · Registry entry updated 2026-08-14.