Gliese 293

Gliese 293 (or WD 0752-676, or LHS 34, or L 97-12) is a nearby white dwarf star, located 26.64 light-years away in the constellation Volans. It is the nearest star in this constellation.^[9]: 84

Gliese 293

Gliese 293 Location of Gliese 293 in the constellation Volans
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Volans[1]
Right ascension	07h 53m 08.1439s[2]
Declination	−67° 47′ 31.382″[2]
Apparent magnitude (V)	13.96[3]
Characteristics
Evolutionary stage	white dwarf[4]
Spectral type	DC8.8,[4] or DC10.3[5]
Apparent magnitude (B)	14.75[6]
Apparent magnitude (RKC)	13.58[3]
Apparent magnitude (IKC)	13.20[3]
Apparent magnitude (J)	12.726±0.023[7]
Apparent magnitude (H)	12.476±0.026[7]
Apparent magnitude (KS)	12.362±0.024[7]
Astrometry
Proper motion (μ)	RA: 1,467.123 mas/yr[2] Dec.: −1,489.721 mas/yr[2]
Parallax (π)	122.4130±0.0114 mas[2]
Distance	26.644 ± 0.002 ly (8.1691 ± 0.0008 pc)
Absolute magnitude (MV)	14.47±0.04[3]
Details
Mass	0.59±0.01[3] M☉
Radius	0.0128[3][note 1] R☉
Surface gravity (log g)	8.00±0.02[3] cgs
Temperature	5,700±90[3] K
Age	2.65±0.10[3][note 2] Gyr
Other designations
GJ 293, EGGR 56, L 97-12, LAWD 26, LFT 555, LHS 34, LTT 2981, PLX 1882, WD 0752-676, 2MASS J07530814-6747314[8]
Database references
SIMBAD	data

Distance

Gliese 293 is the 12th-nearest known white dwarf.^[10] A trigonometric parallax of Gliese 293 was included in the YPC (Yale Parallax Catalog), and subsequently it was measured more precisely in CTIOPI (Cerro Tololo Inter-American Observatory (CTIO) Parallax Investigation) 0.9 m telescope program, and by Gaia.

Gliese 293 parallax measurements

Source	Paper	Parallax, mas	Distance, pc	Distance, ly	Ref.
YPC	van Altena et al., 1995	141.2±8.4	7.08±0.42	23.10±1.37	[11]
CTIOPI 0.9 m	TSN-21 (Subasavage et al., 2009)	126.25±1.34	7.92±0.08	25.83±0.27	[3]
Gaia DR3	Gaia Collaboration 2023	122.4130±0.0114	8.1691±0.0008	26.644±0.002	[2]

Physical parameters

The mass of Gliese 293 is 0.59±0.01 Solar masses,^[3] and its surface gravity is 10^8.00±0.02 cm/s²,^[3] or approximately 102,000 times Earth's, corresponding to a radius of 8,887 kilometres (5,522 miles), or 139% of Earth's.

Gliese 293 has a temperature of 5,700±90 K,^[3] almost like the Sun, and a cooling age, i.e. age as a degenerate star (not including its lifetime as a main-sequence star and a giant star) of 2.65±0.10 Gyr^[3] It has a white appearance due to similar temperature to Sun.

See also

• List of star systems within 25–30 light-years

Notes

1. From surface gravity and mass.
2. White dwarf cooling age, i.e. age as degenerate star (not including lifetime as main-sequence star and as giant star)