Registry · deep sky

NGC 6638

GlobCluster SIMBAD GlC 259 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: 18h 30m 56.25s
Declination: −25° 29′ 47.1″
Galactic l, b: 7.8977, -7.153
Magnitude V: 9.68
Parallax: 0.115 mas
Redshift z: 2.879e-05
Radial velocity: 8.63 km/s
Proper motion: -2.58, -4.05 mas/yr
Angular size: 3′ × 3′

Also known as

4 identifiers

C 1827-255GCl 95NGC 6638[KPS2012] MWSC 2933

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Cl* NGC 6638 SAW V66	RRLyrae	16.6″	—
OGLE BLG-RRLYR-62057	RRLyrae	19.25″	—
OGLE BLG-RRLYR-62064	RRLyrae	20.62″	—
OGLE BLG-RRLYR-62060	RRLyrae	22.61″	—
OGLE BLG-RRLYR-62058	RRLyrae	23.17″	—
OGLE BLG-RRLYR-62047	RRLyrae	29.75″	—
OGLE BLG-RRLYR-62072	RRLyrae	31.14″	—
OGLE BLG-RRLYR-62043	RRLyrae	31.96″	—
OGLE BLG-RRLYR-62076	RRLyrae	32.92″	—
OGLE BLG-RRLYR-62040	RRLyrae	34.86″	—
Cl* NGC 6638 SAW V28	RRLyrae	35.22″	—

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/ngc-6638 · Registry entry updated 2026-08-14.