HD 63454
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| Observation data Epoch 2000 |
|
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 7h 39m 21.85s |
| Declination | -78° 16' 44.30" |
| Apparent magnitude (V) | 9.40 |
| Distance | 116.7 ly (35.80 pc) |
| Spectral type | K4V |
| Other designations | |
|
CD-77°298, HIP 37284
|
|
HD 63454 is a dim tenth magnitude star in the constellation of Chamaeleon. It is an orange dwarf (spectral type K4 V), and is somewhat cooler and less luminous than our Sun. To see the star one needs a small telescope. It is located near the south Celestial pole and is never visible north of latitude 20° N.
[edit] HD 63454 b
| Extrasolar planet | Lists of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.036 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 2.81782±0.000095 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | ?° |
| Time of periastron | (τ) | 2,453,111.129±0.005 JD |
| Physical characteristics | ||
| Mass | (m) | >0.38 MJ |
| Radius | (r) | ? RJ |
| Density | (ρ) | ? kg/m3 |
| Temperature | (T) | ? K |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Moutou, Mayor, Bouchy et al. |
|
| Detection method | Radial velocity | |
| Discovery status | Confirmed | |
HD 63454 b is an extrasolar planet orbiting the star HD 63454. It is at least a third as massive as Jupiter and orbits the star in a very close "torch orbit", even closer than the famous 51 Pegasi b.
[edit] References
- Moutou et al. (2005). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics 439: 367-373.
[edit] External links
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