Registry · deep sky

HD 170657

HighPM* SIMBAD PM* K2V 151 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 31m 18.96s
Declination: −18° 54′ 31.7″
Galactic l, b: 13.837, -4.24
Magnitude V: 6.81
Parallax: 75.848 mas
Redshift z: -0.00014366
Radial velocity: -43.071 km/s
Proper motion: -138.2, -195.5 mas/yr

Also known as

40 identifiers

1RXS J183120.6-1854312MASS J18311897-1854314BD-18 4986Cl* IC 4725 A 33Cl* IC 4725 I 236Cl* IC 4725 L 46051Cl* IC 4725 L IV-6-51CNS5 4578CPD-18 414Gaia DR1 4093301470306839040Gaia DR2 4093301474693288960Gaia DR3 4093301474693288960GC 25276GCRV 10974GEN# +3.47250026GJ 716GSC 06274-01576HD 170657HIC 90790HIP 90790IC 4725 26IRAS 18283-1856LTT 7358NLTT 46596NSV 10944PLX 4256PLX 4256.00PPM 234645RAVE J183119.0-185432SAO 161557SKY# 33878SPOCS 804TIC 186271747** TNN 10ATYC 6274-1576-1UBV 15733UBV M 39069WDS J18313-1855AWEB 15556YZ 108 7734

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Gaia DR3 4093298554073944704	Star	55.53″	—
UCAC4 356-148323	Star	80.15″	—
Gaia DR3 4092926163284313344	Star	94.47″	—
Gaia DR3 4092923173987015808	Star	115.7″	—
Gaia DR3 4092926197644319360	Star	124.5″	—
IC 4725 76	Star	139.4″	10.95
Gaia DR3 4092923066509074048	Star	152.5″	—
Gaia DR3 4093298171773933184	Star	175.7″	—
Gaia DR3 4093302088784611456	Star	187.9″	—
UCAC4 356-148489	Star	214.5″	—
UCAC4 356-148200	Star	234.4″	—

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-170657 · Registry entry updated 2026-08-14.