Registry · deep sky

4C 21.53

Radio SIMBAD Rad 6 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 39.63s
Declination: +21° 37′ 21.7″
Galactic l, b: 57.545, -0.2737

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
4C 21.53W	HIIReg	7.943″	—
AGAL G057.548-00.269	smmRad	12.98″	—
[ABB2014] WISE G057.541-00.279	Bubble	17.79″	—
PSR B1937+21.4	Pulsar	143.3″	—
HD 185757	PulsV*	330.9″	8.31
HD 344739	Star	523.2″	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-21-53 · Registry entry updated 2026-08-14.