1RXS J160929.1−210524
Star in the constellation of Scorpius / From Wikipedia, the free encyclopedia
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1RXS J160929.1−210524 (also known as GSC 6213-1358 or PZ99 J160930.3−210459) is a pre-main-sequence star approximately 450 light-years away in the constellation of Scorpius.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
1RXS J160929.1−210524 image taken with MIRI. The companion is the faint object above the star. Credit: NASA/ESA/CSA JWST; Ya-Lin Wu et al. ; Processing: Meli_thev | |
Observation data Epoch J2000 Equinox J2000 | |
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Constellation | Scorpius |
Right ascension | 16h 09m 30.3075s[1] |
Declination | −21° 04′ 58.944″[1] |
Characteristics | |
Spectral type | K7V[2] |
Variable type | T Tauri star |
Astrometry | |
Proper motion (μ) | RA: −10.195(22) mas/yr[1] Dec.: −23.307(15) mas/yr[1] |
Parallax (π) | 7.2444 ± 0.0176 mas[1] |
Distance | 450 ± 1 ly (138.0 ± 0.3 pc) |
Details | |
Mass | 0.85+0.20 −0.10[2] M☉ |
Radius | 1.35[2] R☉ |
Temperature | 4060+300 −200[2] K |
Age | 5 million[2] years |
Other designations | |
Database references | |
SIMBAD | data |
Close
The star was identified as a member of the Upper Scorpius subgroup of the Scorpius–Centaurus association by Thomas Preibisch and coauthors in 1998,[4] and originally assigned an age of 5 million years old based on its group membership. A more recent analysis of the ages of the stars in the Upper Scorpius group pegs its average age at 11 million years.[5]