Setting DEFAULTSORT key to HD 102272 using Hot Default Sort
|
Add: s2cid. | Use this bot. Report bugs. | Suggested by Abductive | Category:Durchmusterung objects | #UCB_Category 3551/3725
|
||
Line 71: | Line 71: | ||
{{Reflist|colwidth=30em|refs= |
{{Reflist|colwidth=30em|refs= |
||
<ref name="Niedzielski2009">{{cite journal | title=A Planet in a 0.6 AU Orbit Around the K0 Giant HD 102272 | last1=Niedzielski | first1=A. | last2=Goździewski | first2=K. | last3=Wolszczan | first3=A. | last4=Konacki | first4=M. | last5=Nowak | first5=G. | last6=Zieliński | first6=P. | display-authors=1 | journal=The Astrophysical Journal | volume=693 | issue=1 | pages=276–280 | date=2009 | arxiv=0810.1710 | bibcode=2009ApJ...693..276N | doi=10.1088/0004-637X/693/1/276 }}</ref> |
<ref name="Niedzielski2009">{{cite journal | title=A Planet in a 0.6 AU Orbit Around the K0 Giant HD 102272 | last1=Niedzielski | first1=A. | last2=Goździewski | first2=K. | last3=Wolszczan | first3=A. | last4=Konacki | first4=M. | last5=Nowak | first5=G. | last6=Zieliński | first6=P. | display-authors=1 | journal=The Astrophysical Journal | volume=693 | issue=1 | pages=276–280 | date=2009 | arxiv=0810.1710 | bibcode=2009ApJ...693..276N | doi=10.1088/0004-637X/693/1/276 | s2cid=16074041 }}</ref> |
||
<ref name="van Leeuwen2007">{{cite journal | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | title=Validation of the new Hipparcos reduction | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=57240 Vizier catalog entry ]</ref> |
<ref name="van Leeuwen2007">{{cite journal | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | title=Validation of the new Hipparcos reduction | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=57240 Vizier catalog entry ]</ref> |
||
}} |
}} |
Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Leo |
Right ascension | 11h46m 23.54s[1] |
Declination | +14° 07′ 26.3″[1] |
Apparent magnitude (V) | 8.71[2] |
Characteristics | |
Spectral type | K0 [3] |
U−B color index | 0.69 [3] |
B−V color index | 1.00[2] |
Astrometry | |
Proper motion (μ) | RA: -6.54 ± 1.43[1] mas/yr Dec.: 6.21 ± 0.76[1] mas/yr |
Parallax (π) | 4.10 ± 0.97 mas[1] |
Distance | approx. 800 ly (approx. 240 pc) |
Absolute magnitude (MV) | ~1[4] |
Details | |
Mass | 1.9 ± 0.3 [3] M☉ |
Radius | 10.1 ± 4.6 [3] R☉ |
Surface gravity (log g) | 3.07 ± 0.12 [3] cgs |
Temperature | 4908 ± 35 [3] K |
Metallicity | [Fe/H] = −0.26 ± 0.08 [3] |
Rotation | ~170 days [3] |
Other designations | |
Database references | |
SIMBAD | data |
HD 102272 is a K-type giant star approximately 800 light-years away in the constellationofLeo. As of 2008[update], two extrasolar planets are known to orbit the star.[5]
In June 2008, the discovery of two extrasolar planets orbiting the star was announced.[5] The planets were discovered using the radial velocity method and the Hobby-Eberly Telescope. The radial velocity data clearly shows the presence of the inner planet (HD 102272 b.) Although there is evidence for another planet, there is insufficient data to unambiguously determine its orbit.[3]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | >5.9 ± 0.2 MJ | 0.614 ± 0.001 | 127.58 ± 0.30 | 0.05 ± 0.04 | — | — |
c | >2.6 ± 0.4 MJ | 1.57 ± 0.05 | 520 ± 26 | 0.68 ± 0.06 | — | — |
| |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
Stars |
| ||||||||||||
| |||||||||||||
Galaxies |
| ||||||||||||
This giant-star-related article is a stub. You can help Wikipedia by expanding it. |