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Contents

   



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1 Characteristics  




2 Planetary system  




3 References  













BD-11 4672






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Coordinates: Sky map18h33m28.8323s, −11° 38′ 09.7218″
  
From Wikipedia, the free encyclopedia
  

This is an old revision of this page, as edited by Lithopsian (talk | contribs)at20:25, 27 September 2020 (missing citations in starbox detail). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)
BD-11 4672
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Scutum
Right ascension 18h33m 28.8323s[1]
Declination −11° 38′ 09.7218″[1]
Apparent magnitude (V) 9.99[1]
Characteristics
HD 1690
Evolutionary stage main sequence star
Spectral type K7V
B−V color index 1.22
Astrometry
Radial velocity (Rv)-87.5156±0.0011[1] km/s
Proper motion (μ) RA: -288.590[1] mas/yr
Dec.: -235.560[1] mas/yr
Parallax (π)36.7812 ± 0.0466 mas[1]
Distance88.7 ± 0.1 ly
(27.19 ± 0.03 pc)
Details
Mass0.651+0.031
−0.029[2] M☉
Radius0.639+0.020
−0.022[2] R☉
Luminosity (bolometric)0.157+0.019
−0.017[citation needed] L☉
Surface gravity (log g)4.642+0.027
−0.025 cgs
Temperature4550 ± 110[citation needed] K
Metallicity [Fe/H]-0.48±0.07[3] dex
Rotation25d[citation needed]
Age7.4+4.5
−4.9[citation needed] Gyr
Other designations

BD-11 4672, GSC 05699-02129, HIP 90979, TYC 5262-825-1, 2MASS J18332885-1138097, TYC 5699-2129-1, Wolf 1462, GJ 717, Gaia DR2 4154598526336121600

Database references
SIMBAD4672 data

BD-11 4672 is a 9th magnitude orange dwarf star located 88.7 light-years away in the constellationofScutum. This star was recognised as a high proper motion starbyMax Wolf in 1924.[4] It is a single star, and is the host to two known extrasolar planets.

Characteristics

BD-11 4672 is an K-type main sequence star. Its age is not well constrained, but is probably older than the Sun. Its metallicity is 35% that of the Sun.[3] No significant flare activity was detected.[5]

Planetary system

In 2010, a team of astronomers led by astronomer C. Moutou of the High Accuracy Radial Velocity Planet Searcher performed a radial-velocity analysis that detected a gas giant planet in orbit around BD-11 4672.[6] In 2020, an another gas giant planet was detected.[2]

The BD-11 4672 planetary system[7][2]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b >0.65±0.05 MJ 2.36±0.04 1634±14 0.05±0.05 — —
c >0.04836+0.009
−0.0066 MJ 		0.3±0.01 74.2±0.08 0.4±0.15 — —

References

  1. ^ a b c d e f g 4672 BD-11 4672, entry, SIMBAD. Accessed online September 27, 2020.
  • ^ a b c d The GAPS Programme at TNG XXIV. An eccentric Neptune-mass planet near the inner edge of the BD-11 4672 habitable zone, 2020, arXiv:2006.14393
  • ^ a b SWEET-Cat update and FASMA A new minimization procedure for stellar parameters using high-quality spectra, 2017, arXiv:1703.06671
  • ^ Einige bewegte Sterne in Scutum
  • ^ A census of Coronal Mass Ejections on solar-like stars, 2020, arXiv:2002.04430
  • ^ Moutou, C.; Mayor, M.; Lo Curto, G.; Ségransan, D.; Udry, S.; Bouchy, F.; Benz, W.; Lovis, C.; Naef, D.; Pepe, F.; Queloz, D.; Santos, N. C.; Sousa, S. G. (2011). "The HARPS search for southern extra-solar planets: XXVI: Seven new planetary systems". Astronomy and Astrophysics. 527 (A63). arXiv:1012.3830. doi:10.1051/0004-6361/201015371.
  • ^ Planet BD-11 4672 b on exoplanet.eu



    • Retrieved from "https://en.wikipedia.org/w/index.php?title=BD-11_4672&oldid=980674666"
    Categories: 
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     ●Scutum (constellation)
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     ●2MASS objects
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    ●This page was last edited on 27 September 2020, at 20:25 (UTC).
    ●This version of the page has been revised. Besides normal editing, the reason for revision may have been that this version contains factual inaccuracies, vandalism, or material not compatible with the Creative Commons Attribution-ShareAlike License.


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