WISE 1541−2250
Star in the constellation Libra / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about WISE 1541−2250?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
WISE 1541−2250 (full designation WISEPA J154151.66−225025.2) is a sub-brown or brown dwarf of spectral class Y0.5,[2] located in the constellation Libra at approximately 18.6 light-years from Earth.[3] This object received popular attention when its discovery was announced in 2011 at a distance estimated to be only about 9 light-years, which would have made it the closest brown dwarf known.[6] (For really close brown dwarfs see, for example, Luhman 16, WISE 1506+7027, Epsilon Indi Ba, Bb, or UGPS 0722-05). It is not the farthest known Y-type brown dwarf to Earth.
Quick Facts Constellation, Right ascension ...
Observation data Epoch MJD 55424.68[1] Equinox J2000[1] | |
---|---|
Constellation | Libra |
Right ascension | 15h 41m 51.57s[1] |
Declination | −22° 50′ 25.03″[1] |
Characteristics | |
Spectral type | Y0.5[2] |
Apparent magnitude (J (MKO filter system)) | 21.16 ± 0.36[1] |
Apparent magnitude (H (MKO filter system)) | 20.99 ± 0.52[1] |
Astrometry | |
Proper motion (μ) | RA: −895±5 mas/yr[3] Dec.: −88±5 mas/yr[3] |
Parallax (π) | 166.9 ± 2.0 mas[4] |
Distance | 19.5 ± 0.2 ly (5.99 ± 0.07 pc) |
Details | |
Mass | 12 (8–12)[5] MJup |
Radius | 1.01 (1.01–1.07)[5] RJup |
Surface gravity (log g) | 4.50 (4.25–4.5)[5] cgs |
Temperature | 350[5] K |
Other designations | |
Database references | |
SIMBAD | data |
Location of WISE 1541−2250 in the constellation Libra |
Close
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/9/98/WISE_1828%2B2650_Brown_dwarf.jpg/640px-WISE_1828%2B2650_Brown_dwarf.jpg)