Registry · deep sky

BD+23 501B

YSO SIMBAD Y*O 48 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: 03h 44m 12.74s
Declination: +24° 01′ 54.5″
Galactic l, b: 166.12, -24.01
Parallax: 7.3635 mas
Redshift z: 1.901e-05
Radial velocity: 5.6986 km/s
Proper motion: 20.15, -45.15 mas/yr

Also known as

24 identifiers

2MASS J03441274+2401544ADS 2727 AAP J03441274+2401544BD+23 501BCl* Melotte 22 HII 298Cl* Melotte 22 MSH 52Cl* Melotte 22 MSK 21Cl* Melotte 22 SRS 75392CSI+23 501 2DANCe J03441275+2401541EPIC 211066412Gaia DR2 65248460263511552Gaia DR3 65248460263511552HAT 259-02121** HLD 172B[LH98] 89sCl Melotte 22 298RX J0344.2+2402BTIC 348639200UCAC4 571-008506WDS J03441+2402BWISE J034412.74+240153.91RXS J034412.1+240200NW[SCG94] O 34

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
BD+23 501A	TTauri* Candidate	5.666″	11.12
V* MX Tau	HighPM*	193.1″	13.82
Cl* Melotte 22 DH 342	Eruptive*	237.3″	—
Wolf 1267	Star	250.1″	13.15
BD+23 502B	Star	252.8″	—
BD+23 502	YSO	253.7″	10.59
BD+23 502A	Star	254.5″	—
UCAC4 570-008317	Star	294″	14.25
2MASS J03443523+2403458	AGB* Candidate	327.8″	—
2MASS J03443541+2400048	YSO	329.4″	14.33
Cl Melotte 22 180	Star	341.7″	11.17

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/bd-23-501b · Registry entry updated 2026-08-14.