Registry · deep sky

Cl* Westerlund 1 W 20

RedSG SIMBAD s*r M6I 29 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 04.70s
Declination: −45° 51′ 24.0″
Galactic l, b: 339.55, -0.4091
Parallax: 0.169 mas
Proper motion: -2.478, -4.041 mas/yr

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Cl* Westerlund 1 CN H	WolfRayet*	5.991″	—
Cl* Westerlund 1 CN G	WolfRayet*	7.199″	20.87
Cl* Westerlund 1 W 46a	BlueSG	9.19″	18.55
Cl* Westerlund 1 W 46b	Star	12.02″	—
[CRN2020] W1041	BlueSG	14.62″	—
WR 77i	WolfRayet*	15.72″	19.79
Cl* Westerlund 1 CN D	WolfRayet*	16.46″	—
WR 77k	WolfRayet*	17.54″	18.86
Cl* Westerlund 1 W 54	BlueSG	18.31″	—
Cl* Westerlund 1 CN B	WolfRayet*	20.4″	20.99
Cl* Westerlund 1 CN C	WolfRayet*	20.56″	—

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-20 · Registry entry updated 2026-08-14.