YSES 2b
Star in the constelation Musca
From Wikipedia, the free encyclopedia
YSES 2b is a red dwarf star located in the constellation of Musca.[2] It was discovered through direct imaging by Bohn et al. in 2021.[2][3] It was initially suspected to be a long-period planet, but in 2025 it was found to be a background star unrelated to YSES 2, a young, Sun-like star which is approximately 360 ly from Earth in Scorpius-Centaurus Association whose age is 14 million years.[4][1]
Right ascension11h 27m 55.3s[1]
Declination−66° 26′ 04″[1]
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Musca |
| Right ascension | 11h 27m 55.3s[1] |
| Declination | −66° 26′ 04″[1] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | late M |
| Astrometry | |
| Proper motion (μ) | RA: −25.42+0.25 −0.18 mas/yr[1] Dec.: 3.30+0.28 −0.30 mas/yr[1] |
| Parallax (π) | 0.41+0.37 −0.28 mas[1] |
| Distance | 2,500 pc |
| Details | |
| Radius | 0.5[1] R☉ |
| Surface gravity (log g) | 4.4[1] cgs |
| Temperature | 3065[1] K |
| Other designations | |
| TYC 8984-2245-1 b, 2MASS J11275535-6626046 b | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
