HD 20367
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Aries |
| Right ascension | 03h 17m 40.0461s |
| Declination | +31° 07' 37.372"' |
| Apparent magnitude (V) | 6.41 |
| Characteristics | |
| Spectral type | G0 |
| U-B color index | ? |
| B-V color index | ? |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | 5.3 km/s |
| Proper motion (μ) | RA: -103.09 mas/yr Dec.: -56.65 mas/yr |
| Parallax (π) | 36.86 ± 1.08 mas |
| Distance | 88.44 ly (27.12 pc) |
| Absolute magnitude (MV) | 6.933 |
| Details | |
| Mass | 1.14 M☉ |
| Radius | 1.2 R☉ |
| Luminosity | 1.64 L☉ |
| Temperature | 5929 K |
| Metallicity | 0.1 |
| Rotation | ? |
| Age | 0.87 years |
| Other designations | |
HD 20367 is a 6th magnitude star in the constellation of Aries, very close to the border with Perseus. It is a yellow dwarf similar to our Sun (spectral type G0 V).
An extrasolar planet orbiting the star was discovered in 2002.
[edit] HD 20367 b
| Orbital elements | ||
|---|---|---|
| Semi-major axis a: | 1.25 AU | |
| Eccentricity e: | 0.23 ± 0.01 | |
| Orbital period P: | 1 y 135 ± 6 d | |
| Inclination i: | ?° | |
| Angular distance θ: | 46 mas | |
| Longitude of periastron ω: |
83 ± 26° | |
| Time of periastron τ: | 2,451,786 ± 32 JD | |
| Semi-amplitude K: | 29 ± 3 m/s | |
| Physical characteristics | ||
| Mass: | >1.07 MJ | |
| Radius: | 0.95 RJ | |
| Density: | ? kg/m³ | |
| Gravity: | ? g | |
| Temperature: | ? K | |
| Discovery | ||
| Discovery date: | June 2002 | |
| Discovery site: | ||
| Detection method(s): | ||
| Discoverer(s): | Mayor, Naef, Pepe et al. |
|
| Other catalogue | ||
The planet, designated as HD 20367 b has a mass similar to that of Jupiter. It orbits the star at a mean distance quarter further than Earth orbits the Sun. The 500 day orbit is somewhat eccentric.
[edit] External links
- SIMBAD star entry, planet entry
- The Extrasolar Planets Encyclopaedia entry
- Extrasolar Visions entry
- [Simbad]
- http://jumk.de/astronomie/exoplanets/hd-20367.shtml
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