2MASS J05581644−4501559
2MASS J0558 and its companion (white cross-hair at the bottom) Credit: Legacy Surveys / D.Lang (Perimeter Institute) & Meli thev | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 05h 58m 16.44s |
| Declination | −45° 01′ 56.0″ |
| Apparent magnitude (V) | 14.928 ±0.01 |
| Characteristics | |
| Evolutionary stage | red dwarf |
| Spectral type | M4V |
| Variable type | flare star |
| Astrometry | |
| Radial velocity (Rv) | 11.04±3.62 km/s |
| Proper motion (μ) | RA: −66.975±0.014 mas/yr Dec.: +61.824±0.016 mas/yr |
| Parallax (π) | 37.0938±0.0119 mas |
| Distance | 87.93 ± 0.03 ly (26.959 ± 0.009 pc) |
| Details | |
| Mass | 0.230±0.007 M☉ |
| Radius | 0.260±0.008 R☉ |
| Luminosity | (5.95±0.17)×10−03 L☉ |
| Temperature | 3,232±107 K |
| Age | 120-650 Myr |
| Other designations | |
| UCAC4 225−007620, RX J0558.3−4501, 1RXS J055818.1−450146, TIC 180972066, WISE J055816.36−450155.4, Gaia DR2 4801596282413400192 | |
| Database references | |
| SIMBAD | data |
| companion | |
2MASS J0558 (also known as 2MASS J05581644−4501559) is a young red dwarf. It has one planetary-mass object orbiting it at a separation of 1043 astronomical units.