Kepler-421 Ab
Sign in to saveKepler-421b is an exoplanet that, as of July 2014, has the longest known year of any transiting planet (704 days), although not as long as the planets that have been directly imaged, or many of the planets found by the radial-velocity method, or as long as some transiting planet candidates which are listed as planets in the Extrasolar Planets Encyclopaedia (KIC 5010054 b etc.). It is the first transiting-planet found near the snow-line.
In the Vinony graph
Within Vinony's link graph, Kepler-421 Ab is referenced by 67 other articles, and connects out to method of detecting extrasolar planets, Kepler Space Telescope and Moon.
It sits within the topics Exoplanets discovered by the Kepler space telescope, Exoplanets discovered in 2014 and Transiting exoplanets.
Its subject is documented across 10 Wikipedia language editions.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 1,124 light-years
- Coordinates
- RA 283.2568° · Dec 45.0878°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- Kepler-421b
- Planet.discovery_site
- Kepler telescope
- Planet.discovered
- 2014
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.period
- 704.1984 d
- Planet.inclination
- 89.965
- Planet.star
- Kepler-421
- Planet.mean_radius
- 4.16
- Planet.mass
- 16.1 M🜨
via Wikipedia infobox
Wikidata facts
- Constellation
- Lyra
- Radius
- 0.371
- Orbital period
- 704.1984
Show 15 more facts
- site of astronomical discovery
- Kepler Space Telescope
- discovery method
- transit method
- time of discovery or invention
- 2014-07-00
- discoverer or inventor
- Kepler Space Telescope
- right ascension
- 283.25683601409380
- declination
- 45.08777014094723
- epoch
- J2000.0
- semi-major axis of an orbit
- 1.219
- orbital eccentricity
- 0.041
- right ascension component of proper motion
- -4.010
- declination component of proper motion
- -20.398
- parallax
- 2.8401
- catalog code
- KOI-1274.01b
- argument of periapsis
- 160
- orbital inclination
- 89.965
via Wikidata · CC0
~2 min read
Encyclopedic overview
2 sectionsContents
- References
- Further reading
Kepler-421b is an exoplanet that, as of July 2014, has the longest known year of any transiting planet (704 days), although not as long as the planets that have been directly imaged, or many of the planets found by the radial-velocity method, or as long as some transiting planet candidates which are listed as planets in the Extrasolar Planets Encyclopaedia (KIC 5010054 b etc.). It is the first transiting-planet found near the snow-line.
Normally, at least three transits are required to confirm a planet. Due to very high signal to noise ratio, only two transits were sufficient to validate Kepler-421b to be a real planet without additional confirmation methods.
Excerpted from Wikipedia’s “Kepler-421 Ab” article, available under the CC BY-SA 4.0 licence.
Available in 10 languages
via Wikidata sitelinks · CC0