A Sunlike star in the constellation Pisces around
which has been found an object that is either a large extrasolar
planet or a brown dwarf. The discovery
of the companion object was announced in 2000.
HD 10697, also known as 109 Piscium, is a yellow subgiant star with a higher
metallicity than that of the Sun. Its
companion, HD 10697 b has mass at least 6 times that of Jupiter and perhaps
as great as 38 times the mass of Jupiter. The latter estimate is based on
preliminary astrometric measurements suggesting an orbital inclination of
170° (i.e., almost face-on as seen from Earth).
| Host star
||106 light-years (30.6 pc)
||R.A. 01h 44m 55.82s;
Dec. +20° 04' 59.34?
|Other catalog designations
||109 Pisces, HIP 8159, Gl 72, HR 508, BD+19°282
||2.13 AU (320 million km, 198 million miles)
||2000, SFSU Planet Search
|Method of discovery
- S. Vogt, G. W. Marcy, R. P. Butler, K. Apps (2000). "Six New Planets
from the Keck Precision Velocity Survey". Astrophysical Journal,
536: 902 – 914.
- I. Han, D. C. Black, G. Gatewood (2001). "Preliminary Astrometric
Masses for Proposed Extrasolar Planetary Companions". Astrophysical
Journal, 548: L57–L60.
PLANETS AND SUBSTELLAR OBJECTS