Tau1 Hydrae
Sign in to saveAlso known as 31 Hydrae, HD 81997
multiple star system in the constellation Hydra
In the Vinony graph
Within Vinony's link graph, Tau1 Hydrae is referenced by 191 other articles, and connects out to list of stars in Hydra, year and apparent magnitude.
It is catalogued under topics including Bayer objects, Bright Star Catalogue objects and Durchmusterung objects.
Its subject is documented across 9 Wikipedia language editions.
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
Connections
list of stars in Hydra
Entity
year
Entity
apparent magnitude
Entity
orbital eccentricity
Entity
epoch
Entity
stellar classification
Entity
Bright Star Catalogue
Entity
minute and second of arc
Entity
Sun
Concept
star
Entity
galaxy
Entity
International Standard Book Number
Entity
light-year
Entity
constellation
Entity
kelvin
Entity
astronomical unit
Entity
nebula
Entity
orbit
Entity
radius
Entity
exoplanet
Entity