YSES 2
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Musca |
| Right ascension | 11h 27m 55.35s |
| Declination | −66° 26′ 04.5″ |
| Apparent magnitude (V) | 10.88±0.07 |
| Characteristics | |
| Spectral type | K1Ve |
| Astrometry | |
| Proper motion (μ) | RA: −34.025 mas/yr Dec.: +2.319 mas/yr |
| Parallax (π) | 9.1537±0.0118 mas |
| Distance | 356.3 ± 0.5 ly (109.2 ± 0.1 pc) |
| Details | |
| Mass | 1.10±0.03 M☉ |
| Radius | 1.193±0.022 R☉ |
| Luminosity | 0.65 L☉ |
| Temperature | 4,749±40 K |
| Rotation | 2.7325 days |
| Age | 13.9±2.3 Myr |
| Other designations | |
| TIC 295777692, TYC 8984-2245-1 | |
| Database references | |
| SIMBAD | data |
YSES 2 is a young, Sun-like star in the constellation of Musca. It is approximately 360 ly from Earth in the Scorpius-Centaurus Association. Its age is 14 million years.
The star was believed to be orbited by the exoplanet YSES 2 b, a super-jovian gas giant with 6.3+1.6
−0.9 times the mass of Jupiter that had an estimated separation of 114 AU. It was discovered through direct imaging by Bohn et al. in 2021, but in 2025 was determined to be a background star and not a planet.