Observation data Epoch MJD 55448.07 [1] Equinox J2000 [1] | |
---|---|
Constellation | Cepheus |
Right ascension | 03h 13m 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 (designation abbreviated to WISE 0313+7807, or WISE J0313+7807) is a brown dwarf of spectral 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-wavelength 40 cm (16 in) 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.
Observation data Epoch MJD 55448.07 [1] Equinox J2000 [1] | |
---|---|
Constellation | Cepheus |
Right ascension | 03h 13m 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 (designation abbreviated to WISE 0313+7807, or WISE J0313+7807) is a brown dwarf of spectral 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-wavelength 40 cm (16 in) 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.