Star GD 99

White dwarf GD 99 is located 111 light years away from the Sun. It is a single star of spectral class DA4.1, that has 80 % of solar mass. For now, there are no known exoplanets in this star system.

GD 99

White dwarf

Spectral class: DA4.1

Location

Right ascension: 9h 1m 49s

Declination: 36° 7' 8'' (northern hemisphere)

Parallax: 29.426

Sun distance: 110.84 ly | 34 pc

Basic characteristic

Mass: 80 % M Sun

Size: 0 % R Sun | 0.1 R Jupiter (estimate)

Temperature: 13500 K | 2.34 T Sun

Photometry

K
2.1

H
1.6

J
1.2

Grp
0.8

I
0.8

G
0.6

V
0.5

Gbp
0.5

B
0.4

U
0.3

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).

GD 99 system structure

GD 99

More about GD 99

Star GD 99 is is is much smaller than the Sun and temperature on its surface is around 13500 K (13227 °C), which is about 234 % of Sun's temperature.

       GD 99 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.

Other designations of this star
V* VW Lyn, 2MASS J09014867+3607080, NLTT 20774, SDSS J090148.63+360707.2, TIC 21448779

External sources

GD 99: Re-investigation of an old ZZ Ceti companion

Scientific study, Accepted: 21. 11. 2022

Simbad database (V* VW Lyn)

Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

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