PDS 70
PDS 70 (V1032 Centauri) is a very young T Tauri star in the constellation Centaurus. Located 370 light-years (110 parsecs) from Earth, it has a mass of 0.76 M☉ and is approximately 5.4 million years old. The star has a protoplanetary disk containing two nascent exoplanets, named PDS 70b and PDS 70c, which have been directly imaged by the European Southern Observatory's Very Large Telescope. PDS 70b was the first confirmed protoplanet to be directly imaged.
The protoplanetary disk of PDS 70 with new planet PDS 70b (right) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 08m 10.15455s |
| Declination | −41° 23′ 52.5733″ |
| Apparent magnitude (V) | 12 |
| Characteristics | |
| Evolutionary stage | Pre-main-sequence (T Tauri) |
| Spectral type | K7 |
| U−B color index | 0.71 |
| B−V color index | 1.06 |
| Astrometry | |
| Radial velocity (Rv) | 0.74±3.22 km/s |
| Proper motion (μ) | RA: -29.697 mas/yr Dec.: -24.041 mas/yr |
| Parallax (π) | 8.8975 ± 0.0191 mas |
| Distance | 366.6 ± 0.8 ly (112.4 ± 0.2 pc) |
| Details | |
| Mass | 0.76 ± 0.02 M☉ |
| Radius | 1.26 ± 0.15 R☉ |
| Luminosity | 0.35 ± 0.09 L☉ |
| Temperature | 3972 ± 36 K |
| Rotation | ~50 days |
| Rotational velocity (v sin i) | ~10 km/s |
| Age | 5.4 ± 1 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.