Tau1 Hydrae
Sign in to saveAlso known as 31 Hydrae, HD 81997
multiple star system in the constellation Hydra
Wikidata facts
- Constellation
- Hydra
- Distance from Earth
- 18.209
- Radius
- 1.4
- Mass
- 1.20
Show 17 more facts
- catalog code
- BDS 5109 A
- apparent magnitude
- 4.465013
- effective temperature
- 6507
- parallax
- 54.9187
- radial velocity
- 11.1
- spectral class
- F5
- epoch
- J2000.0
- metallicity
- 0.18
- stellar rotational velocity
- 32.2
- surface gravity
- 16200
- luminosity
- 3.369
- absolute magnitude
- 3.28
- right ascension component of proper motion
- 116.374
- declination component of proper motion
- -31.265
- age estimated by a dating method
- 3.61
- right ascension
- 142.28721402546
- declination
- -2.76893945431
Sources (3)
via Wikidata · CC0