| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 11m 46.448s[1] |
| Declination | +04° 24′ 12.73″[1] |
| Characteristics | |
| Spectral type | G0VH-03 / M6V |
| B−V color index | 0.588 ± 0.016 / ?[2] |
| Astrometry | |
| Proper motion (μ) | RA: 169.0 ± 0.3[3] mas/yr Dec.: -142.3 ± 0.3[3] mas/yr |
| Parallax (π) | 35.6 ± 0.2 mas[3] |
| Distance | 91.6 ± 0.5 ly (28.1 ± 0.2 pc) |
| Absolute magnitude (MV) | 4.77 / ? |
| Orbit | |
| Companion | HD 33636 B |
| Period (P) | 5.797 ± 0.002[3] yr |
| Semi-major axis (a) | 14.2 ± 0.2 AU |
| Inclination (i) | 4.1 ± 0.1° |
| Details | |
| Mass | 1.01 ± 0.02[4]/ ? M☉ |
| Radius | 0.97 ± 0.01[4]/ ? R☉ |
| Luminosity | 1.08 ± 0.003[4]/ ? L☉ |
| Surface gravity (log g) | 4.46 ± 0.02[4]/ ? cgs |
| Temperature | 5979 ± 28[4]/ ? K |
| Age | 2.5 ± 1.1[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 33636 is a binary system located approximately 94 light-years away in Orion constellation. The visible member HD 33636 A is a 7th magnitude yellow main-sequence star. It is located at a distance of 91.6 light years from Earth. It has a metallicity of −0.05 ± 0.07.
A companion was discovered in 2002 with a minimum mass of planet size.[2][5] This was ascertained to be a low-mass star in 2007, making it HD 33636 B.[3]
van Leeuwen2007 was invoked but never defined (see the help page).Perrier2003 was invoked but never defined (see the help page).bean2007 was invoked but never defined (see the help page).Bonfanti2015 was invoked but never defined (see the help page).Vogt2002 was invoked but never defined (see the help page).