Hellenica World

HD 224693

HD 224693 (also known as HIP 118319) is a yellow subgiant star approximately 320 light-years away[1] in the constellation Cetus.


Planetary system

In 2006, an extrasolar planet was discovered orbiting HD 224693 by the Keck telescope using radial velocity measurements. A preliminary search for transits using photometric data from Fairborn Observatory was inconclusive because data around the predicted time of transit was to sparse to rule out possible transits.[2]

The HD 224693 system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b >0.71 MJ 0.192 26.73 ± 0.02 0.05 ± 0.03

* 79 Ceti
* HD 222582
* HD 33283
* HD 86081
* List of extrasolar planets


References

1. ^ a b c d e f van Leeuwen, F. (2007). "HIP 118319". Hipparcos, the New Reduction. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=117927. Retrieved 2009-12-11.
2. ^ a b Johnson et al.; Marcy, Geoffrey W.; Fischer, Debra A.; Laughlin, Gregory; Butler, R. Paul; Henry, Gregory W.; Valenti, Jeff A.; Ford, Eric B. et al. (2006). "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets". The Astrophysical Journal 647 (1): 600–611. doi:10.1086/505173. http://www.iop.org/EJ/article/0004-637X/647/1/600/64723.html.


External links

* "Notes for star HD 224693". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+224693.

Retrieved from "http://en.wikipedia.org/"
All text is available under the terms of the GNU Free Documentation License

Index

Scientificlib.com