Registry · deep sky

G 139-21

HighPM* SIMBAD PM* M4.5V 383 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: 17h 15m 18.93s
Declination: +04° 57′ 50.1″
Galactic l, b: 26.164, 23.61
Magnitude V: 14.71
Parallax: 68.299 mas
Redshift z: 6.975e-05
Radial velocity: 20.91 km/s
Proper motion: 580.2, -749.7 mas/yr

Also known as

22 identifiers

2MASS J17151894+0457496CNS5 4231G 139-21Gaia DR2 4393265392167891712Gaia DR3 4393265392168829056GEN# +9.80139021GJ 1214** GJ 1214ALHS 3275LSPM J1715+0457NAME-IAU OrkariaNLTT 44431PLX 3913.01PM J17153+0457TIC 467929202UBV M 53793UCAC4 475-063069USNO 256WDS J17153+0458AWISEA J171519.33+045742.2[RHG95] 2724USNO-B1.0 0949-00280047

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
G 139-21b	Planet	0″	—
GJ 1214	Star	14.69″	—
GJ 1214 b	Exoplanet	14.69″	15.1
ZTF J171540.07+050038.1	RRLyrae	357.8″	—

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/g-139-21 · Registry entry updated 2026-08-14.