Kepler-1513

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Kepler-1513
Observation data
Epoch J2000        Equinox J2000
Constellation Lyra [1]
Right ascension 19h 19m 09.99418s [2]
Declination +39° 17′ 06.9287″ [2]
Apparent magnitude  (V)12.888±0.100 (Kepler band)
Characteristics
Evolutionary stage Main sequence
Spectral type K0V [3] or late G [4]
Apparent magnitude  (G)12.946±0.003 [2]
Apparent magnitude  (J)11.758±0.027 [5]
Apparent magnitude  (H)11.397±0.030 [5]
Apparent magnitude  (K)11.309±0.020 [5]
Astrometry
Radial velocity (Rv)−0.42±1.41 [2] km/s
Proper motion (μ)RA: 20.439 mas/yr [2]
Dec.: 1.745 mas/yr [2]
Parallax (π)2.8446±0.0134  mas [2]
Distance 1,147 ± 5  ly
(352 ± 2  pc)
Details [6]
Mass 0.943±0.037  M☉
Radius 0.950+0.077
−0.055  R☉
Luminosity (bolometric)0.743+0.148
−0.100  L☉
Surface gravity (log g)4.46±0.10  cgs
Temperature 5491±100  K
Metallicity 0.17±0.06 [M/H]
Age 7.0+4.0
−4.2  Gyr
Other designations
Kepler-1513, KOI-3678, KIC 4150804, TIC 394177315, 2MASS J19190999+3917070 [5]
Database references
SIMBAD data
Exoplanet Archive data

Kepler-1513 is a main-sequence star about 1,150 light-years (350 parsecs ) away in the constellation Lyra. It has a late-G [4] or early-K [3] spectral type, and it hosts at least one, and likely two, exoplanets.

Contents

Planetary system

Kepler-1513b (KOI-3678.01) was confirmed in 2016 as part of a study statistically validating hundreds of Kepler planets. [7] In November 2022, an exomoon candidate was reported around Kepler-1513b based on transit-timing variations (TTVs). Unlike previous giant exomoon candidates in the Kepler-1625 and Kepler-1708 systems, this exomoon would have been terrestrial-mass, ranging from 0.76 Lunar masses to 0.34 Earth masses depending on the planet's mass and the moon's orbital period. [4]

In October 2023, a follow-up study by the same team of astronomers using additional observations found that the observed TTVs cannot be explained by an exomoon, but can be explained by a second, outer planet, Kepler-1513c, with a mass comparable to Saturn. [6]

The Kepler-1513 planetary system [6]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b0.152+0.104
−0.061  MJ 		0.53+0.04
−0.03		160.8842+0.0011
−0.0028		0.306+0.093
−0.097		—8.05+0.58
−0.40  R🜨
c0.266+0.098
−0.063  MJ 		1.7106 [8] 841.4+8.1
−5.3		0.125+0.018
−0.019		——

See also

References

  1. ↑ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 Frasca, A.; Molenda-Żakowicz, J.; et al. (October 2016). "Activity indicators and stellar parameters of the Kepler targets. An application of the ROTFIT pipeline to LAMOST-Kepler stellar spectra". Astronomy & Astrophysics . 594: A39. arXiv: 1606.09149 . Bibcode:2016A&A...594A..39F. doi:10.1051/0004-6361/201628337. S2CID   119283349.
  4. 1 2 3 Kipping, David; Yahalomi, Daniel A. (January 2023). "A search for transit timing variations within the exomoon corridor using Kepler data". Monthly Notices of the Royal Astronomical Society . 518 (3): 3482–3493. arXiv: 2211.06210 . Bibcode:2023MNRAS.518.3482K. doi: 10.1093/mnras/stac3360 .
  5. 1 2 3 4 "Kepler-1513". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 8 October 2023.
  6. 1 2 3 Yahalomi, Daniel A.; Kipping, David; et al. (2024). "Not So Fast Kepler-1513: A Perturbing Planetary Interloper in the Exomoon Corridor". Monthly Notices of the Royal Astronomical Society . 527: 620–639. arXiv: 2310.03802 . doi: 10.1093/mnras/stad3070 .
  7. ↑ Morton, Timothy D.; Bryson, Stephen T.; et al. (May 2016). "False Positive Probabilities for all Kepler Objects of Interest: 1284 Newly Validated Planets and 428 Likely False Positives". The Astrophysical Journal . 822 (2): 86. arXiv: 1605.02825 . Bibcode:2016ApJ...822...86M. doi: 10.3847/0004-637X/822/2/86 .
  8. ↑ "Orbital Period Calculator | Binary System". www.omnicalculator.com. Retrieved 2023-10-31.
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