HD 168443
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Serpens |
| Right ascension | 18h 20m 03.9316s |
| Declination | –09° 35′ 44.601″ |
| Apparent magnitude (V) | 6.92 |
| Distance | 123.5 ly (37.88 pc) |
| Spectral type | G5IV |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
HD 168443 is a yellow dwarf star of (spectral type G5) about the mass of our Sun. It is in the constellation of Serpens Cauda, 123 light years from our solar system. It is known to be orbited by one large planet and a brown dwarf. The brown dwarf takes 30 times longer to orbit the star than the gas giant planet.[1][2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | >7.2 ± 0.4 MJ | 0.29 | 58.116 ± 0.001 | 0.529 ± 0.02 |
| c | 34 ± 12 MJ | 2.87 | 1739.5 ± 3.8 | 0.228 ± 0.005 |
[edit] See also
[edit] References
- ^ Marcy et al.; Butler, R. Paul; Vogt, Steven S.; Liu, Michael C.; Laughlin, Gregory; Apps, Kevin; Graham, J. R.; Lloyd, J. et al (2001). "Two Substellar Companions Orbiting HD 168443". The Astrophysical Journal 555 (1): 418–425. Bibcode 2001ApJ...555..418M. doi:10.1086/321445. http://www.iop.org/EJ/article/0004-637X/555/1/418/53197.html.
- ^ Reffert, S., Quirrenbach, A. (2006). "Hipparcos astrometric orbits for two brown dwarf companions: HD 38529 and HD 168443" (PDF). Astronomy and Astrophysics 449 (2): 699–702. Bibcode 2006A&A...449..699R. doi:10.1051/0004-6361:20054611. https://openaccess.leidenuniv.nl/bitstream/1887/7483/1/A&A_449_699_702.pdf.
[edit] External links
- "Notes for star HD 168443". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+168443. Retrieved 2008-09-08.
- "HD 168443". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&StarId=16. Retrieved 2008-09-08.
 |
This main sequence star-related article is a stub. You can help Wikipedia by expanding it. |
