HD 224693
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Cetus |
| Right ascension | 23h 59m 54s |
| Declination | -22° 25′ 41″ |
| Apparent magnitude (V) | +8.23 |
| Characteristics | |
| Spectral type | G2IV |
| U-B color index | ? |
| B-V color index | ? |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +1.5 km/s |
| Proper motion (μ) | RA: 148.74 mas/yr Dec.: 27.53 mas/yr |
| Parallax (π) | 10.63 ± 1.10 .52 .91 mas |
| Distance | 307 ly (94 pc) |
| Absolute magnitude (MV) | 3.36 |
| Details | |
| Mass | 1.33 ± 0.1 M☉ |
| Radius | 1.7 ± 0.3 R☉ |
| Luminosity | 3.91 L☉ |
| Temperature | 6037 ± 44 K |
| Metallicity | 0.343 ± 0.03 |
| Rotation | ? |
| Age | ? years |
| Other designations | |
|
HIP 118319, GSC 06411-00109, SAO 192301....
|
|
HD 224693 (also known as HIP 118319) is a yellow subgiant star approximately 307 light-years away in the constellation Cetus.
As of 2006, an extrasolar planet is known to orbit HD 224693.
Contents |
[edit] HD 224693 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.233 AU |
| Eccentricity | (e) | 0.05 ± 0.03 |
| Orbital period | (P) | 26.73 ± 0.02 d |
| Angular distance | (θ) | 2.479 mas |
| Longitude of periastron |
(ω) | 6 ± 200° |
| Time of periastron | (T0) | 2453193.9 ± 3 JD |
| Semi-amplitude | (K) | 40.2 ± 2.0 m/s |
| Physical characteristics | ||
| Mass | (m) | >0.71 MJ |
| Discovery information | ||
| Discovery date | April 17, 2006 | |
| Discoverer(s) | Johnson and NK2 consortium | |
| Detection method | Doppler Spectroscopy | |
| Discovery status | Published | |
HD 224693 b is an extrasolar planet orbiting its star every 27 days.
[edit] See also
[edit] References
Johnson et al. (2006). "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets" ([dead link]). The Astrophysical Journal 647: 600 – 611. doi:.
[edit] External links
 |
This subgiant star-related article is a stub. You can help Wikipedia by expanding it. |
 |
This extrasolar planet related article is a stub. You can help Wikipedia by expanding it. |
