Observation data Epoch MJD 55590.99 [1] Equinox J2000 [1] | |
---|---|
Constellation | Draco |
Right ascension | 19h 52m 46.61s [1] |
Declination | 72° 40′ 00.61″ [1] |
Characteristics | |
Spectral type | T4 [1] |
Apparent magnitude (J ( 2MASS filter system)) | 15.086±0.045 [1] |
Apparent magnitude (H ( 2MASS filter system)) | 14.728±0.077 [1] |
Apparent magnitude (KS ( 2MASS filter system)) | 14.650±0.078 [1] |
Astrometry | |
Proper motion (μ) |
RA: −220±69
[1]
mas/
yr Dec.: −347±72 [1] mas/ yr |
Distance | ~ 44.4
[1]
ly (~ 13.6 [1] pc) |
Other designations | |
WISEPA J195246.66+724000.8 (designation abbreviated to WISE 1952+7240, or WISE J1952+7240) is a brown dwarf of spectral class T4, [1] located in constellation Draco at approximately 44 light-years from Earth. [1]
WISE 1952+7240 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 1952+7240. [1] [note 1]
Trigonometric parallax of WISE 1952+7240 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrofotometric — means (see table).
WISE 1952+7240 distance estimates
Source | Parallax, mas | Distance, pc | Distance, ly | Ref. |
---|---|---|---|---|
Kirkpatrick et al. (2011) | ~13.6 | ~44.4 | [1] |
Non-trigonometric distance estimates are marked in italic.
Observation data Epoch MJD 55590.99 [1] Equinox J2000 [1] | |
---|---|
Constellation | Draco |
Right ascension | 19h 52m 46.61s [1] |
Declination | 72° 40′ 00.61″ [1] |
Characteristics | |
Spectral type | T4 [1] |
Apparent magnitude (J ( 2MASS filter system)) | 15.086±0.045 [1] |
Apparent magnitude (H ( 2MASS filter system)) | 14.728±0.077 [1] |
Apparent magnitude (KS ( 2MASS filter system)) | 14.650±0.078 [1] |
Astrometry | |
Proper motion (μ) |
RA: −220±69
[1]
mas/
yr Dec.: −347±72 [1] mas/ yr |
Distance | ~ 44.4
[1]
ly (~ 13.6 [1] pc) |
Other designations | |
WISEPA J195246.66+724000.8 (designation abbreviated to WISE 1952+7240, or WISE J1952+7240) is a brown dwarf of spectral class T4, [1] located in constellation Draco at approximately 44 light-years from Earth. [1]
WISE 1952+7240 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 1952+7240. [1] [note 1]
Trigonometric parallax of WISE 1952+7240 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrofotometric — means (see table).
WISE 1952+7240 distance estimates
Source | Parallax, mas | Distance, pc | Distance, ly | Ref. |
---|---|---|---|---|
Kirkpatrick et al. (2011) | ~13.6 | ~44.4 | [1] |
Non-trigonometric distance estimates are marked in italic.