Registry · deep sky

Cl* Westerlund 1 W 57

BlueSG SIMBAD s*b B4Ia 23 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: 16h 47m 01.36s
Declination: −45° 51′ 45.8″
Galactic l, b: 339.54, -0.4057
Magnitude V: 16.88
Parallax: 0.2031 mas
Redshift z: -0.00017721
Radial velocity: -53.13 km/s
Proper motion: -2.251, -3.448 mas/yr

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
WR 77d	WolfRayet*	2.545″	—
Cl* Westerlund 1 W 59	LongPeriodV* Candidate	4.933″	18.97
[CRN2020] W1028	Star	7.627″	20.76
Cl* Westerlund 1 W 61a	BlueSG	10.61″	17.51
[CRN2020] W1034	BlueSG	12.49″	18.69
Cl* Westerlund 1 W 61b	BlueSG	13.2″	18.59
Cl* Westerlund 1 W 62a	LongPeriodV* Candidate	14.39″	—
[CRN2020] W1035	Star	14.44″	19.56
Cl* Westerlund 1 W 52	BlueSG	17.14″	17.88
Cl* Westerlund 1 W 53	BlueSG	17.26″	18.51
[CRN2020] W1025	**	19.93″	19.91

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/cl-westerlund-1-w-57 · Registry entry updated 2026-08-14.