WD 1337+705
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ursa Minor |
| Right ascension | 13h 38m 50.47569s |
| Declination | +70° 17′ 07.6598″ |
| Apparent magnitude (V) | 12.773 |
| Characteristics | |
| Spectral type | DA2.4[1] |
| Astrometry | |
| Proper motion (μ) | RA: -403.65 ± 3.22 mas/yr Dec.: -22.00 ± 3.60 mas/yr |
| Parallax (π) | 38.29 ± 3.02[2][2] mas |
| Distance | 85 ± 7 ly (26 ± 2 pc) |
| Absolute magnitude (MV) | 10.56[1] |
| Details | |
| Mass | 0.59[1] M☉ |
| Luminosity | 0.03[3] L☉ |
| Temperature | 21290 K[1] K |
| Other designations | |
|
WD 1337+705, EG 102, HIP 66578, LTT 18341
|
|
| Database references | |
| SIMBAD | data |
WD 1337+705 is a star in the constellation Ursa Minor. Shining with an apparent magnitude of 12.8, it is white dwarf 0.59 times as massive as the Sun.[1] It is 85 light-years distant from Earth.[2] It has 3% of the Sun's luminosity.[3]
In 1997, Jay Holberg and colleagues discovered magnesium in its spectrum, which suggests that it has some low mass companion or accretion of material happening as the star's temperature is not hot enough for its intrinsic emission.[4] Despite this, no direct evidence for a circumstellar disc, such as an infrared excess, has come to light.[5]
References
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