Registry · deep sky

HD 239724

Star SIMBAD * B1III 33 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: 21h 38m 39.53s
Declination: +57° 22′ 01.7″
Galactic l, b: 99.179, 3.674
Magnitude V: 9.14
Parallax: 0.4645 mas
Proper motion: -4.664, -3.644 mas/yr

Also known as

22 identifiers

2MASS J21383953+5722017AG+57 1462ALS 11934BD+56 2615Cl* Trumpler 37 MPP 11Cl* Trumpler 37 MVA 412Gaia DR1 2178378653430241280Gaia DR2 2178378657742227840Gaia DR3 2178378657742227840GEN# +4.35370463GSC 03975-00343HD 239724LS III +57 11PMC 90-93 4781PPM 39698SAO 33621TIC 401213944Cl Trumpler 37 463TYC 3975-343-1UBV M 27998YZ 57 12392[PGH98b] Star 49

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
ZTF J213834.36+572137.8	YSO	48.07″	—
Gaia DR3 2178378589022761472	YSO	59.93″	—
2MASS J21385029+5722283	TTauri*	91.1″	18.55
2MASS J21384622+5720380	TTauri*	99.74″	19.51
Cl* Trumpler 37 KUN 191	YSO	135″	14.3
ATO J324.6961+57.4057	TTauri*	151.8″	17.04
ZTF J213818.18+572121.8	RSCVnV*	177.2″	—
ZTF J213817.50+572230.7	TTauri*	180.4″	16.69
2MASS J21390319+5722318	TTauri*	193.7″	18.58
2MASS J21381509+5721554	TTauri*	197.7″	16.83
ZTF J213843.32+571835.9	TTauri*	208″	16.58

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/hd-239724 · Registry entry updated 2026-08-14.