IRAS 04125+2902
IRAS 04125+2902 (green star in the middle) and its companion (yellow star below) Credit: Pan-STARRS & Meli thev | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 15m 42.7871s |
| Declination | +29° 09′ 59.832″ |
| Apparent magnitude (V) | 15.487±0.003 |
| Characteristics | |
| Evolutionary stage | pre main sequence |
| Spectral type | M1.25±0.25 + M6.5 |
| Variable type | T Tauri |
| Astrometry | |
| Radial velocity (Rv) | 13.35±0.39 km/s |
| Proper motion (μ) | RA: +21.811 mas/yr Dec.: −18.145 mas/yr |
| Parallax (π) | 6.2474±0.0270 mas |
| Distance | 522 ± 2 ly (160.1 ± 0.7 pc) |
| Details | |
| Primary | |
| Mass | 0.70±0.04 M☉ |
| Radius | 1.45±0.1 R☉ |
| Luminosity | 0.466±0.041 L☉ |
| Temperature | 4,080±95 K |
| Rotation | 11.31±0.06 d |
| Rotational velocity (v sin i) | 7.1±0.5 km/s |
| Age | 3.3+0.6 −0.5 Myr |
| Companion | |
| Mass | 0.17±0.04 M☉ |
| Radius | 0.96±0.12 R☉ |
| Luminosity | 0.050±0.004 L☉ |
| Temperature | 2,830±90 K |
| Other designations | |
| TIC 56658270, IRAS 04125+2902, 2MASS J04154278+2909597, WISE J041542.77+290959.5 | |
| Database references | |
| SIMBAD | data |
IRAS 04125+2902 is an M-type star and a T Tauri variable located in the Taurus Molecular Cloud, 160 parsecs (520 light-years) from Earth. This young protostar has 70% of the Sun's mass, 1.45 times the Sun's radius and an effective temperature of 4,080 K (3,810 °C; 6,880 °F). It has a very young age of three million years. It is surrounded by a transitional disk, inclined at 30° relative to Earth, and has one known exoplanet.
It is part of a binary system with 2MASS J04154269+2909558, the two being separated by a projected distance of 635 astronomical units, or 4 arcseconds in the sky. The companion was discovered in 2009, has a spectral type of M6.5, and does not show any infrared excess.