| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 11h 06m 28.7626s[1] |
| Declination | −77° 37′ 33.1444″[1] |
| Characteristics | |
| Spectral type | M3[2] |
| Astrometry | |
| Proper motion (μ) | RA: −22.193±0.233[1] mas/yr Dec.: 0.215±0.206[1] mas/yr |
| Parallax (π) | 5.2343 ± 0.1759 mas[1] |
| Distance | 620 ± 20 ly (191 ± 6 pc) |
| Details[3] | |
| Mass | 0.32 ± 0.11 M☉ |
| Radius | 0.83 ± 0.04 R☉ |
| Luminosity | 0.09 ± 0.07 L☉ |
| Temperature | 3490 ± 180 K |
| Age | 2±1[4] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
CHXR 73 is a star in the constellation Chamaeleon, about 620 light-years away from Earth.[1][6]
The star is located within Cha I, a molecular cloud.[5] It has a low temperature of 3,490 K typical of red dwarfs, but unlike typical red dwarfs it has an unusually large radius of 0.83 R☉—this is because of its young age, only 8 million years.[3]
- ^ a b c d e f Cite error: The named reference
Gaia DR2was invoked but never defined (see the help page). - ^ "Notes on CHXR 73 b". Extrasolar Planets Encyclopaedia. Retrieved 24 December 2016.
- ^ a b Daemgen, S.; Petr-Gotzens, M. G.; Correia, S.; Teixeira, P. S.; Brandner, W.; Kley, W.; Zinnecker, H. (2013). "Protoplanetary disk evolution and stellar parameters of T Tauri binaries in Chamaeleon I". Astronomy & Astrophysics. 554: A43. arXiv:1304.1150. Bibcode:2013A&A...554A..43D. doi:10.1051/0004-6361/201321220. S2CID 59440639.
- ^ Cite error: The named reference
Bowler2016was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ "Newfound Object Further Blurs Planet Definition". Space.com. Retrieved 13 November 2016.