astro.wikisort.org - StarHD 114783 is a star with two exoplanetary companions in the equatorial constellation of Virgo. With an apparent visual magnitude of 7.56[2] it is too faint to be visible with the unaided eye, but is an easy target for binoculars. Based on parallax measurements, it is located at a distance of 68.7 light years from the Sun, but is drifting closer with a radial velocity of −12 km/s.[1]
Star in the constellation Virgo
HD 114783
Observation data Epoch J2000 Equinox J2000 |
Constellation |
Virgo |
Right ascension |
13h 12m 43.7856s[1] |
Declination |
–02° 15′ 54.1299″[1] |
Apparent magnitude (V) |
7.56[2] |
Characteristics |
Spectral type |
K1V[3] |
B−V color index |
0.930±0.013[2] |
Variable type |
Constant[4] |
Astrometry |
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|
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Radial velocity (Rv) | −12.11±0.16[1] km/s |
Proper motion (μ) | RA: −138.403±0.109[1] mas/yr Dec.: 10.228±0.070[1] mas/yr |
Parallax (π) | 47.4482 ± 0.0637 mas[1] |
Distance | 68.74 ± 0.09 ly (21.08 ± 0.03 pc) |
Absolute magnitude (MV) | 6.00[2] |
|
Details[5] |
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|
---|
Mass | 0.883+0.018 −0.028 M☉ |
Radius | 0.810+0.011 −0.009 R☉ |
Luminosity | 0.423±0.001[1] L☉ |
Surface gravity (log g) | 4.42±0.58 cgs |
Temperature | 5,114±12 K |
Metallicity [Fe/H] | 0.08±0.11 dex |
Rotational velocity (v sin i) | 1.9±0.5 km/s |
Age | 2.5+3.0 −1.6 Gyr |
|
Other designations |
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BD−01°2784, GJ 3769, HD 114783, HIP 64457, SAO 139218 |
Database references |
---|
SIMBAD | data |
Exoplanet Archive | data |
ARICNS | data |
Extrasolar Planets Encyclopaedia | data |
This is an orange-hued K-type main-sequence star with a stellar classification of K1V[3] It is roughly 2.5[5] billion years old and is chromospherically inactive[4] with a low projected rotational velocity of 1.9 km/s.[5] The star has 88% of the mass and 81% of the radius of the Sun.[5] It is radiating 42%[1] of the luminosity of the Sun from its photosphere at an effective temperature of 5,114 K.[5]
In 2001, the California and Carnegie Planet Search team found an extrasolar planet orbiting the star using the radial velocity method. The discovery was made with the Keck Telescope.[4] A second companion was discovered in 2010.[6]
The HD 114783 planetary system[7][6]
Companion (in order from star) |
Mass |
Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
Inclination |
Radius |
b |
≥ 1.034±0.089 MJ |
1.169±0.068 |
496.9±2.3 |
0.085±0.033 |
— |
— |
c |
≥ 0.611+0.056 −0.053 MJ |
— |
4,319+151 −130 |
0.000+0.091 −0.085 |
— |
— |
See also
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
- Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768. S2CID 2272917.
- Soto, M. G.; Jenkins, J. S. (2018). "Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue". Astronomy and Astrophysics. 615: A76. arXiv:1801.09698. Bibcode:2018A&A...615A..76S. doi:10.1051/0004-6361/201731533.
- Bryan, Marta L.; et al. (2016). "Statistics of Long Period Gas Giant Planets in Known Planetary Systems". The Astrophysical Journal. 821 (2): 89. arXiv:1601.07595. Bibcode:2016ApJ...821...89B. doi:10.3847/0004-637X/821/2/89. S2CID 19709252.
- Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.
Virgo constellation |
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Stars (list) | |
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Star clusters | |
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Nebulae | |
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Galaxies | Messier | |
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NGC | |
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Other |
- A1689-zD1
- Abell 1835 IR1916
- Arp 240 (NGC 5257 and NGC 5258)
- Arp 271 (NGC 5426 and NGC 5427)
- BR 1202-0725
- 3C 273
- 3C 279
- 3C 298
- 4C 04.42
- Eyes Galaxies
- GR 8
- IC 1011
- IC 1101
- IC 3258
- IC 3328
- IRAS 12212+0305
- IRAS 13197−1627
- M60-UCD1
- Markarian 50
- Markarian 1318
- PG 1216+069
- PG 1244+026
- PG 1254+047
- PG 1307+085
- PG 1416−129
- PG 1426+015
- PKS 1148-001
- PKS 1167+014
- PKS 1217+023
- PKS 1229−021
- PKS 1302−102
- PKS 1335−127
- PKS 1402+044
- PKS 1405−076
- QSO B1208+1011
- QSO B1243−072
- QSO B1246−057
- QSO B1331+170
- RXJ1242−11
- SMM J14011+0252
- UM 448
- UM 461
- UM 462
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Galaxy clusters | |
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Other |
- GRB 930131
- GRB 030328
- GRB 050408
- GRB 050801
- GRB 080310
- North Polar Spur
- SN 1960F
- SN 1981B
- SN 1990B
- SN 1990N
- SN 1991T
- SN 1991bg
- SN 1994D
- SN 1999br
- SN 2002cx
- SN 2007bi
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На других языках
[de] HD 114783
HD 114783 ist ein 67 Lichtjahre von der Erde entfernter später Hauptreihenstern mit einer Rektaszension von 13h 12m 43s und einer Deklination von −02° 15' 54". Er besitzt eine scheinbare Helligkeit von 7,57 mag. Im Jahre 2001 entdeckte Paul Butler einen extrasolaren Planeten, der diesen Stern umkreist. Dieser trägt den Namen HD 114783 b.
- [en] HD 114783
[ru] HD 114783
HD 114783 — звезда, находящаяся примерно в 66,6 световых годах от Земли, в созвездии Дева. Как оранжевый карлик, она несколько тусклее и холоднее, чем наше Солнце. Спектральный тип звезды K0V. Звезду не видно невооружённым глазом, но её просто найти биноклем.
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