Registry · deep sky

* tau Oph A

SB* SIMBAD SB* F2IV 82 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 03m 04.92s
Declination: −08° 10′ 49.3″
Galactic l, b: 20.061, 6.87
Magnitude V: 5.27
Parallax: 18.188 mas
Redshift z: -0.00013408
Radial velocity: -40.2 km/s
Proper motion: 12.65, -37.7 mas/yr

Also known as

25 identifiers

* 69 Oph AADS 11005 ABD-08 4549ACCDM J18031-0811ACSI-08 4549 2Gaia DR2 4170583776094715520Gaia DR3 4170583776094715520GC 24565GCRV 10479GJ 700.1 AGJ 9612 AHD 164765HERZ 14729HR 6734IDS 17576-0811 APLX 4122PLX 4122.00PMSC 17576-0810APMSC 17576-0810AabROT 2528SBC9 2558** STF 2262A* tau Oph ATYC 5675-662-1WDS J18031-0811A

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
* tau Oph	**	0.02321″	4.79
* tau Oph B	Star	1.772″	5.86
* tau Oph C	Star	99.52″	11.3
ATO J270.7242-08.1657	LongPeriodV*	173″	—
2MASS J18030349-0807441	Star	186.1″	—
UCAC4 410-075848	Star	266.6″	—
HD 164828	Star	311.2″	8.58
2MASS J18024403-0809544	Star	314.8″	—
UCAC4 410-075864	Star	387.8″	—
ATO J270.8448-08.0937	EclBin	409.3″	—
2MASS J18033376-0805419	RGB*	527.1″	—

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/tau-oph-a · Registry entry updated 2026-08-14.