Kepler-1520
K-type main sequence star in the constellation Cygnus / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Kepler-1520?
Summarize this article for a 10 year old
Kepler-1520 (initially published as KIC 12557548) is a K-type main-sequence star located in the constellation Cygnus. The star is particularly important, as measurements taken by the Kepler spacecraft indicate that the variations in the star's light curve cover a range from about 0.2% to 1.3% of the star's light being blocked.[2] This indicates that there may be a rapidly disintegrating planet, a prediction not yet conclusively confirmed, in orbit around the star, losing mass at a rate of 1 Earth mass every billion years.[2] The planet itself is about 0.1 Earth masses,[8] or just twice the mass of Mercury, and is expected to disintegrate in about 100[8]-200 million years.[2] The planet orbits its star in just 15.7 hours,[2] at a distance only two stellar diameters away from the star's surface,[9] and has an estimated effective temperature of about 2255 K.[8] The orbital period of the planet is one of the shortest ever detected in the history of the extrasolar planet search.[10] In 2016, the planet was confirmed as part of a data release by the Kepler spacecraft.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus |
Right ascension | 19h 23m 51.8899s[1] |
Declination | +51° 30′ 16.983″[1] |
Apparent magnitude (V) | 16.7[2] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | K4V[3] |
Apparent magnitude (V) | 16.7[2] |
Apparent magnitude (J) | 14.021±0.035[4] |
Apparent magnitude (H) | 13.433±0.035[4] |
Apparent magnitude (K) | 13.319±0.035[4] |
Astrometry | |
Proper motion (μ) | RA: 0.312(36) mas/yr[1] Dec.: 11.156(30) mas/yr[1] |
Parallax (π) | 1.7034 ± 0.0242 mas[1] |
Distance | 1,910 ± 30 ly (587 ± 8 pc) |
Absolute magnitude (MV) | 7.6[2] |
Details | |
Mass | 0.76 ± 0.03[5] M☉ |
Radius | 0.71 ± 0.026[5] R☉ |
Luminosity | 0.14[2] L☉ |
Surface gravity (log g) | 4.610+0.018 −0.031[5] cgs |
Temperature | 4677+82 −71[5] K |
Metallicity [Fe/H] | 0.04 ± 0.15[5] dex |
Rotation | 22.91±0.24 d[6] |
Age | 4.47[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |