Location of WISE J0521+1025 in the constellation
Orion | |
Observation data Epoch 2012.773 [1] Equinox J2000 | |
---|---|
Constellation | Orion |
Right ascension | 05h 21m 26.349s [1] |
Declination | 10° 25′ 27.41″ [1] |
Characteristics | |
Spectral type | T7.5 [1] |
Apparent magnitude (J ( 2MASS)) | 15.262 [1] |
Apparent magnitude (H ( 2MASS)) | 15.222 ± 0.103 [1] |
Apparent magnitude (Ks ( 2MASS)) | 14.665 [1] |
Apparent magnitude (w1 ( WISE)) | 14.098 ± 0.031 [1] |
Apparent magnitude (w2 ( WISE)) | 12.286 ± 0.026 [1] |
Apparent magnitude (w3 ( WISE)) | 10.306 ± 0.085 [1] |
Astrometry | |
Proper motion (μ) |
RA: +223.7±2.5
mas/
yr
[2] Dec.: −438.3±2.5 mas/ yr [2] |
Parallax (π) | 150.2 ± 3.0 mas [2] |
Distance | 21.7 ± 0.4
ly (6.7 ± 0.1 pc) |
Details | |
Temperature | 727±88 [2] K |
Other designations | |
Database references | |
SIMBAD | data |
WISE J0521+1025 is a nearby brown dwarf of spectral type T7.5, located in the constellation Orion at approximately 21.7 light-years (6.7 parsecs) from Earth. [2]
At the time of discovery, it was the nearest known T dwarf in the northern sky. [1]
WISE J0521+1025 was discovered by Bihain et al. by selection of sources with colours typical for T dwarfs from WISE All-Sky source catalogue and checking them for high proper motion using older surveys: 2MASS, DENIS, SDSS, SSS, DSS and UKIDSS. Three objects among about ten candidates, including WISE J0521+1025, were selected for spectroscopic follow up with Large Binocular Telescope (LBT). October 9, 2012 Bihain et al. carried out follow up observations of WISE J0521+1025 with near-Infrared spectrograph LUCI 1 on LBT. June 25, 2013 Astronomy & Astrophysics received the discovery paper, which was accepted for publication 10 July 2013. [1]
Distance of WISE J0521+1025 was estimated by Bihain et al. using mean absolute magnitudes of single T7.5 dwarfs, derived by Dupuy & Liu (2012) from trigonometric parallaxes: [3] 5.0 ± 1.3 pc (16.3 ± 4.2 ly). [1]
Two other T dwarfs, announced in Bihain et al (2013):
Location of WISE J0521+1025 in the constellation
Orion | |
Observation data Epoch 2012.773 [1] Equinox J2000 | |
---|---|
Constellation | Orion |
Right ascension | 05h 21m 26.349s [1] |
Declination | 10° 25′ 27.41″ [1] |
Characteristics | |
Spectral type | T7.5 [1] |
Apparent magnitude (J ( 2MASS)) | 15.262 [1] |
Apparent magnitude (H ( 2MASS)) | 15.222 ± 0.103 [1] |
Apparent magnitude (Ks ( 2MASS)) | 14.665 [1] |
Apparent magnitude (w1 ( WISE)) | 14.098 ± 0.031 [1] |
Apparent magnitude (w2 ( WISE)) | 12.286 ± 0.026 [1] |
Apparent magnitude (w3 ( WISE)) | 10.306 ± 0.085 [1] |
Astrometry | |
Proper motion (μ) |
RA: +223.7±2.5
mas/
yr
[2] Dec.: −438.3±2.5 mas/ yr [2] |
Parallax (π) | 150.2 ± 3.0 mas [2] |
Distance | 21.7 ± 0.4
ly (6.7 ± 0.1 pc) |
Details | |
Temperature | 727±88 [2] K |
Other designations | |
Database references | |
SIMBAD | data |
WISE J0521+1025 is a nearby brown dwarf of spectral type T7.5, located in the constellation Orion at approximately 21.7 light-years (6.7 parsecs) from Earth. [2]
At the time of discovery, it was the nearest known T dwarf in the northern sky. [1]
WISE J0521+1025 was discovered by Bihain et al. by selection of sources with colours typical for T dwarfs from WISE All-Sky source catalogue and checking them for high proper motion using older surveys: 2MASS, DENIS, SDSS, SSS, DSS and UKIDSS. Three objects among about ten candidates, including WISE J0521+1025, were selected for spectroscopic follow up with Large Binocular Telescope (LBT). October 9, 2012 Bihain et al. carried out follow up observations of WISE J0521+1025 with near-Infrared spectrograph LUCI 1 on LBT. June 25, 2013 Astronomy & Astrophysics received the discovery paper, which was accepted for publication 10 July 2013. [1]
Distance of WISE J0521+1025 was estimated by Bihain et al. using mean absolute magnitudes of single T7.5 dwarfs, derived by Dupuy & Liu (2012) from trigonometric parallaxes: [3] 5.0 ± 1.3 pc (16.3 ± 4.2 ly). [1]
Two other T dwarfs, announced in Bihain et al (2013):