KENNEDY, PRESIDENT JOHN F. - MSC VISIT · NASA · NASA — public domain
HAT-P-11
Sign in to saveAlso known as Kepler-3, HIP 97657, HIC 97657, KIC 10748390, TOI-1144, NLTT 48335, KOI-3, SPOCS 4127
HAT-P-11, also designated GSC 03561-02092 and Kepler-3, is a metal-rich orange dwarf star with a planetary system, away in the constellation Cygnus. This star is notable for its relatively large rate of proper motion. The apparent magnitude of this star is about 9.6, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night. The age of this star is about 6.5 billion years.
Astronomical data · SIMBAD
- Object type
- EB*
- Spectral type
- K4V
- Distance
- 123 light-years
- Redshift
- z = -0.0002116306959100145
- Coordinates
- RA 297.7094° · Dec 48.0809°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Instance of
- variable star
- Constellation
- Cygnus
- Distance from Earth
- 37.89
- Diameter
- 1130000
- Radius
- 0.683
- Mass
- 0.809
- Variable-star type
- eclipsing binary star
Show 16 more facts
- spectral class
- K4V
- catalog code
- KOI-3
- effective temperature
- 4780
- apparent magnitude
- 9.158262
- radial velocity
- -63.7
- parallax
- 26.4274
- epoch
- J2000.0
- metallicity
- 0.21
- stellar rotational velocity
- 2.706
- surface gravity
- 43000
- declination component of proper motion
- 232.726
- luminosity
- 0.2731644
- right ascension component of proper motion
- 126.095
- right ascension
- 297.70936374039
- declination
- 48.08086149735999
- age estimated by a dating method
- 6.5
Sources (1)
via Wikidata · CC0
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Encyclopedic overview
4 sectionsContents
- Planetary system
- See also
- References
- External links
HAT-P-11, also designated GSC 03561-02092 and Kepler-3, is a metal-rich orange dwarf star with a planetary system, away in the constellation Cygnus. This star is notable for its relatively large rate of proper motion. The apparent magnitude of this star is about 9.6, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night. The age of this star is about 6.5 billion years.
The star has active latitudes that generate starspots. The spots are similar in distribution to those on the Sun, but HAT-P-11 is a more active star and has a starspot coverage approximately 100 times greater than the Sun. The star appears to have an unusually small radius, which can be explained by the anomalously high helium fraction.
Excerpted from Wikipedia’s “HAT-P-11” article, available under the CC BY-SA 4.0 licence.
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