07h53m08.15s, −67° 47′ 31.4″| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 07h53m 08.1440s[1] |
| Declination | −67° 47′ 31.3806″[1] |
| Apparent magnitude (V) | 13.96[2] |
| Characteristics | |
| Spectral type | DC8.8,[3] or DC10.3[4] |
| Apparent magnitude (B) | 14.75[5] |
| Apparent magnitude (V) | 13.96[2] |
| Apparent magnitude (RKC) | 13.58[2] |
| Apparent magnitude (IKC) | 13.20[2] |
| Apparent magnitude (J) | 12.726 ± 0.023[5] |
| Apparent magnitude (H) | 12.476 ± 0.026[5] |
| Apparent magnitude (KS) | 12.362 ± 0.024[5] |
| Astrometry | |
| Proper motion (μ) | RA: 1467.066±0.030[1] mas/yr Dec.: −1489.828±0.034[1] mas/yr |
| Parallax (π) | 122.4130 ± 0.0114 mas[6] |
| Distance | 26.644 ± 0.002 ly (8.1691 ± 0.0008 pc) |
| Absolute magnitude (MV) | 14.47 ± 0.04[2] |
| Details | |
| Mass | 0.59 ± 0.01[2] M☉ |
| Radius | 0.0128[2][note 1] R☉ |
| Surface gravity (log g) | 8.00 ± 0.02[2] cgs |
| Temperature | 5700 ± 90[2] K |
| Age | 2.65 ± 0.10[2][note 2] Gyr |
| Other designations | |
Gliese 293, LHS 34, LFT 555, LTT 2981, L 97-12,[7] WD 0752-676, EGGR 56, 2MASS J07530814-6747314[5] | |
| Database references | |
| SIMBAD | data |
  L 97-12 Location of L 97-12 in the constellation Volans | |
L 97-12 (orWD 0752-676, or LHS 34, or Gliese 293) is a nearby degenerate star (white dwarf), located in the constellation Volans, the single known component of the system.
Possibly, L 97-12 is the ninth-closest white dwarf after Sirius B, Procyon B, van Maanen's star, Gliese 440, 40 Eridani B, Stein 2051 B, GJ 1221 and Gliese 223.2. (However, there is probability, that white dwarfs GJ 1087,[7] Gliese 518[7] and (with lesser probability) Gliese 915[2] may be located closer.) Trigonometric parallax of L 97-12 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:
| 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 | [7] |
| CTIOPI 0.9 m | TSN-21 (Subasavage et al., 2009) | 126.25 ± 1.34 | 7.92 ± 0.08 | 25.83 ± 0.27 | [2] |
The mass of L 97-12 is 0.59 ± 0.01 Solar masses,[2] and its surface gravity is 108.00 ± 0.02 cm·s−2,[2] or approximately 102,000 of Earth's, corresponding to a radius of 8,887 kilometres (5,522 miles), or 139% of Earth's.
L 97-12 has temperature 5,700 ± 90 K,[2] almost like the Sun, and cooling age, i.e. age as degenerate star (not including lifetime as main-sequence star and as giant star) 2.65 ± 0.10 Gyr.[2] It has a white appearance due to similar temperature to Sun.
