UPSA Object Registry
Registry · deep sky

tau Boo

Star F7 V
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
13h 47m 15.23s
Declination
+17° 27′ 25.8″
Galactic l, b
358.93, 73.89
Distance
15.652 pc

Published measurements

3 quantities measured more than once
One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.403217 M_sun ± 0.03396 NASA Exoplanet Archive Rosenthal et al. 2021 2021
1.32 M_sun ± 0.2437 NASA Exoplanet Archive TICv8 2015
1.34 M_sun ± 0.05 NASA Exoplanet Archive Brogi et al. 2012 2012
1.35 M_sun NASA Exoplanet Archive Butler et al. 2006 2006
1.2 M_sun NASA Exoplanet Archive Butler et al. 1997 1997

Radius 3 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.439703 R_sun ± 0.03054 NASA Exoplanet Archive Rosenthal et al. 2021 2021
1.42588 R_sun ± 0.06428 NASA Exoplanet Archive TICv8 2015
1.46 R_sun ± 0.05 NASA Exoplanet Archive Brogi et al. 2012 2012

Effective temperature 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
6,461.32 K ± 81.23 NASA Exoplanet Archive Rosenthal et al. 2021 2021
6,466.27 K ± 115.3 NASA Exoplanet Archive TICv8 2015
6,400 K NASA Exoplanet Archive Brogi et al. 2012 2012
6,387 K NASA Exoplanet Archive Butler et al. 2006 2006
6,450 K NASA Exoplanet Archive Butler et al. 1997 1997

Related objects

ObjectTypeRelation
tau Boo b Exoplanethost

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
tau Boo b Exoplanet 0″ 4.486
* tau Boo B Star 1.597″ 11.1
* tau Boo b Planet 7.334″ —
* tau Boo HighPM* 7.334″ 4.49
2MASS J13472250+1730017 RGB* 187.4″ —
LINEAR 9894898 RRLyrae 328.8″ 15.69
2MASS J13474582+1728364 SB* 443.6″ —
2XMM J134736.4+173404 Seyfert2 500.7″ —
LEDA 3813722 AGN 506.5″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/tau-boo · Registry entry updated 2026-08-14.