03h13m26.02s, +78° 07′ 44.4″
| |
| Observation data Epoch MJD 55448.07[1] Equinox J2000[1] | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 03h13m 26.02s[1] |
| Declination | 78° 07′ 44.4″[1] |
| Characteristics | |
| Spectral type | T8.5[1][2] |
| Apparent magnitude (J(2MASS filter system)) | 17.65 ± 0.07[1] |
| Apparent magnitude (H(2MASS filter system)) | 17.63 ± 0.06[1] |
| Astrometry | |
| Proper motion (μ) | RA: 71.1 ± 1.2[3] mas/yr Dec.: 54.8 ± 1.2[3] mas/yr |
| Parallax (π) | 134.3 ± 3.6 mas[3] |
| Distance | 24.3 ± 0.7 ly (7.4 ± 0.2 pc) |
| Other designations | |
WISEPA J031325.96+780744.2[1] | |
WISEPA J031325.96+780744.2 (designation abbreviated to WISE 0313+7807, or WISE J0313+7807) is a brown dwarfofspectral class T8.5,[1][2] located in constellation Cepheus at approximately 21 light-years from Earth.[4]
WISE 0313+7807 was discovered in 2011 by J. Davy Kirkpatrick et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength40cm (16in) space telescope, which mission lasted from December 2009 to February 2011. In 2011 Kirkpatrick et al. published a paper in The Astrophysical Journal Supplement, where they presented discovery of 98 new found by WISE brown dwarf systems with components of spectral types M, L, T and Y, among which also was WISE 0313+7807.[1][note 1]
Currently the most accurate distance estimate of WISEPA J031325.96+780744.2 is a trigonometric parallax, published in 2019 by Kirkpatrick et al.: 134.3 ± 3.6 mas, corresponding to 7.4+0.2
−0.2 pc, or 24.3+0.7
−0.6 ly.[3]
| Source | Parallax, mas | Distance, pc | Distance, ly | Ref. |
|---|---|---|---|---|
| Beichman et al. (2014) | 153 ± 15 | 6.5+0.7 −0.6 |
21.3+2.3 −1.9 |
[4] |
| Kirkpatrick et al. (2019) | 134.3 ± 3.6 | 7.4+0.2 −0.2 |
24.3+0.7 −0.6 |
[3] |
The best estimate is marked in bold.
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