Observation data Epoch J2000 Equinox J2000 |
|
---|---|
Constellation | Phoenix |
Right ascension | 00h 02m 10.766s |
Declination | −43° 09′ 56.02″ |
Apparent magnitude (V) | 12.76 |
Characteristics | |
Spectral type | DAP5.8 |
Apparent magnitude (B) | 13.12 |
Apparent magnitude (V) | 12.76 |
Apparent magnitude (RKC) | 12.82 |
Apparent magnitude (IKC) | 12.66 |
Apparent magnitude (J) | 12.60 ± 0.03 |
Apparent magnitude (H) | 12.43 ± 0.02 |
Apparent magnitude (KS) | 12.45 ± 0.02 |
Astrometry | |
Radial velocity (Rv) | -58.8 ± 10.8 km/s |
Proper motion (μ) |
RA: 589 mas/yr Dec.: -664 mas/yr |
Parallax (π) | 122.27 ± 1.13mas |
Distance | 26.7 ± 0.2 ly (8.18 ± 0.08 pc) |
Absolute magnitude (MV) | 13.20 |
Details | |
Mass | 0.85 ± 0.01 M☉ |
Radius | 0.0097 R☉ |
Surface gravity (log g) | 8.39 ± 0.01 cgs |
Temperature | 8570 ± 50 K |
Age | 1.82 ± 0.06 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Coordinates: 00h 02m 10.766s, −43° 09′ 56.02″
WD 2359-434 (Gliese 915, LHS 1005, L 362-81) is a nearby degenerate star (white dwarf) of spectral class DAP5.8, the single known component of the system, located in the constellation Phoenix, the nearest star in this constellation.
WD 2359-434, probably, is the 11th closest white dwarf, or, possibly, 9th, 10th, or 12th (see Gliese 293, GJ 1087 and Gliese 518). Currently, the most accurate distance estimate of WD 2359-434 is trigonometric parallax from CTIOPI (Cerro Tololo Inter-American Observatory Parallax Investigation) 0.9 m telescope program, published in 2009 in the 21st paper of RECONS's The Solar Neighborhood (TSN) series Subasavage et al. 2009: 122.27 ± 1.13 mas, corresponding to a distance 8.18 ± 0.08 pc, or 26.68 ± 0.25 ly.
The most accurate estimate is marked in bold.
WD 2359-434's mass is 0.85 ± 0.01 Solar masses, its surface gravity is 108.39 ± 0.01 (2.45 · 108) cm·s−2, or approximately 250,000 of Earth's, corresponding to a radius 6780 km, or 1.06 of Earth's.