HD 154857: Difference between revisions
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==References== |
==References== |
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*{{cite journal |url=http://adsabs.harvard.edu/abs/2004ApJ...617..575M |author=McCarthy, Chris; Butler, R. Paul; Tinney, C. G.; Jones, Hugh R. A.; Marcy, Geoffrey W.; Carter, Brad; Penny, Alan J.; Fischer, Debra A. |title=Multiple Companions to HD 154857 and HD 160691 |work=Astronomy Abstract Service |year=2004 |volume=617 |issue=1 |pages=575-579 |accessdate=2007-07-08 }} |
*{{cite journal |url=http://adsabs.harvard.edu/abs/2004ApJ...617..575M |author=McCarthy, Chris; Butler, R. Paul; Tinney, C. G.; Jones, Hugh R. A.; Marcy, Geoffrey W.; Carter, Brad; Penny, Alan J.; Fischer, Debra A. |title=Multiple Companions to HD 154857 and HD 160691 |work=Astronomy Abstract Service |year=2004 |volume=617 |issue=1 |pages=575-579 |accessdate=2007-07-08 }} |
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==References== |
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*{{cite journal |url=http://adsabs.harvard.edu/abs/2007ApJ...660.1636O |author=O'Toole, Simon J.; Butler, R. Paul; Tinney, C. G.; Jones, Hugh R. A.; Marcy, Geoffrey W.; Carter, Brad; McCarthy, Chris; Bailey, Jeremy; Penny, Alan J.; Apps, Kevin; Fischer, Debra |title=New Planets around Three G Dwarfs |work=Astronomy Abstract Service |year=2007 |volume=660 |issue=2 |pages=1636-1641 |accessdate= }} |
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*{{cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/513563 | author=O'Toole ''et al.'' | title=New Planets around Three G Dwarfs | journal=The [[Astrophysical Journal]] | volume=660 | issue=2 | year=2007 | pages=1636 – 1641 }} ([http://xxx.lanl.gov/abs/astro-ph/0702213 web Preprint]) |
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==External links== |
==External links== |
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Revision as of 23:51, 12 January 2008
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 11m 15.7219s |
| Declination | –56° 40′ 50.865″ |
| Apparent magnitude (V) | 7.25 |
| Distance | 223.55 ly (68.54 pc) |
| Spectral type | G5V |
| Other designations | |
HIP 84069, SAO 244491 | |
HD 154857 is a star in the constellation Ara. Like our Sun, it is a yellow dwarf.
Planets
There is one confirmed and one unconfirmed planet discovered in 2004 and 2007 respectively.
HD 154857 b
Template:Planetbox begin Template:Planetbox orbit Template:Planetbox character Template:Planetbox discovery Template:Planetbox end HD 154857 b is an extrasolar planet of gas giant mass that orbits the star in an eccentric orbit. This planet was detected by using Anglo-Australian Telescope (AAT) UCLE spectrometer.
HD 154857 c
Template:Planetbox begin Template:Planetbox orbit Template:Planetbox discovery Template:Planetbox end HD 154857 c is a possible planet discovered in 2007, together with HD 23127 b and HD 159868 b. More measurements are required to confirm its existence.
References
- McCarthy, Chris; Butler, R. Paul; Tinney, C. G.; Jones, Hugh R. A.; Marcy, Geoffrey W.; Carter, Brad; Penny, Alan J.; Fischer, Debra A. (2004). "Multiple Companions to HD 154857 and HD 160691". Astronomy Abstract Service. 617 (1): 575–579. Retrieved 2007-07-08.
{{cite journal}}: CS1 maint: multiple names: authors list (link)
References
- O'Toole; et al. (2007). "New Planets around Three G Dwarfs". The Astrophysical Journal. 660 (2): 1636–1641.
{{cite journal}}: Explicit use of et al. in:|author=(help) (web Preprint)
External links
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