Q20049268
Sign in to save= 7.73, and the Sun, \scriptstyle M_{V_{\odot = 4.83, the visual luminosity of Kepler-442 is calculated from: \scriptstyle \frac{L_{V_{\ast}{L_{V_{\odot} = 10^{0.4\left(M_{V_{\odot - M_{V_{\ast\right)} | age_gyr =
Astronomical data · SIMBAD
- Object type
- *
- Distance
- 1,196 light-years
- Redshift
- z = -0.0002521706803287893
- Coordinates
- RA 285.3666° · Dec 39.2801°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Constellation
- Lyra
- Child body
- Kepler-442b
- Distance from Earth
- 342
- Radius
- 0.6
- Mass
- 0.61
- Variable-star type
- rotating variable star
Show 14 more facts
- parallax
- 2.7269
- apparent magnitude
- 14.916801
- epoch
- J2000.0
- catalog code
- TIC 120499135
- effective temperature
- 4402
- luminosity
- 0.12875777
- right ascension component of proper motion
- 7.784
- declination component of proper motion
- 1.882
- spectral class
- K5V
- metallicity
- -0.6
- right ascension
- 285.36655956711
- declination
- 39.28006226006
- surface gravity
- 14800
- age estimated by a dating method
- 2.9
Sources (2)
via Wikidata · CC0
~5 min read
Encyclopedic overview
6 sectionsContents
- Nomenclature and history
- Stellar characteristics
- Planetary system
- See also
- Notes
- References
Kepler-442 is a K-type main-sequence star approximately 1,196 light years from Earth in the constellation Lyra. It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission used to detect planets that may be transiting their stars. On January 6, 2015, along with the stars of Kepler-438 and Kepler-440, it was announced that the star has an extrasolar planet (a super-Earth) orbiting within the habitable zone, named Kepler-442b.
==Nomenclature and history== thumb|left|300px|The Kepler (spacecraft)|Kepler Space Telescope search volume, in the context of the [[Milky Way Galaxy.]] Prior to Kepler observation, Kepler-442 had the 2MASS catalogue number 2MASS J19012797+3916482. In the Kepler Input Catalog it has the designation of KIC 4138008, and when it was found to have transiting planet candidates it was given the Kepler object of interest number of KOI-4742.
Excerpted from Wikipedia’s “Q20049268” article, available under the CC BY-SA 4.0 licence.