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HD 188015 b

Discovery
Discovered by	Marcy et al.
Discovery site	United States
Discovery date	January 25, 2005
Detection method	Doppler spectroscopy
Orbital characteristics
Apastron	1.368 AU (204,600,000 km)
Periastron	1.038 AU (155,300,000 km)
Semi-major axis	1.203 ± 0.070 AU (180,000,000 ± 10,500,000 km)
Eccentricity	0.137 ± 0.026
Orbital period (sidereal)	461.2 ± 1.7 d 1.263 y
Average orbital speed	28.47
Time of periastron	2,451,787 ± 17
Argument of periastron	222° ± 10
Semi-amplitude	37.6 ± 1.2
Star	HD 188015
Physical characteristics
Mass	>1.50 ± 0.13 MJ

HD 188015 b is an extrasolar planet announced by the California and Carnegie Planet Search team in 2005. Like majority of known planets, it was discovered using the radial velocity method.

The planet has a minimum mass of about 1.25 Jupiter masses. It orbits HD 188015 in a slightly eccentric orbit with a semi-major axis about 20% further than Earth's.

Stability analysis reveals that if Earth-sized planets existed at the Trojan points of HD 188015 b, their orbits would be stable for long periods of time.

References

1. ^ Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal. 619 (1): 570–584. Bibcode:2005ApJ...619..570M. CiteSeerX 10.1.1.516.6667. doi:10.1086/426384.
2. R. Schwarz; R. Dvorak; Á. Süli; B. Érdi (November 2007). "Survey of the stability region of hypothetical habitable Trojan planets". Astronomy & Astrophysics. 474 (3): 1023–1029. Bibcode:2007A&A...474.1023S. doi:10.1051/0004-6361:20077994.: HD 93083, HD 17051, HD 28185, HD 27442, HD 188015, HD 99109, HD 221287

Bibliography

• 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.
• Raghavan; Henry, Todd J.; Mason, Brian D.; Subasavage, John P.; Jao, Wei‐Chun; Beaulieu, Thom D.; Hambly, Nigel C. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal. 646 (1): 523–542. arXiv:astro-ph/0603836. Bibcode:2006ApJ...646..523R. doi:10.1086/504823. S2CID 5669768.

External links

• "Notes for planet HD 188015 b". Extrasolar Planets Encyclopaedia.
• "HD 188015". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-09-08.

v t e Constellation of Vulpecula
List of stars in Vulpecula Vulpecula in Chinese astronomy
Stars	Bayer α (Anser) Flamsteed 1 2 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 35 3 Cyg Variable R S T U V X Z RS SV VW WW AW BE BO BP BS BW DR ER LT LV MW NQ NR NS PS PU PW PX QQ QR QU QV QY V379 V387 V407 V452 V457 V458 HR 7207 7250 7263 7286 7364 7384 7391 7421 7452 7472 7490 7540 7556 7573 7601 7656 7716 7760 7811 7849 7862 7895 7903 8082 8158 8190 8194 8197 8198 HD 186943 187614 188015 189671 190066 190228 190322 201626 Other ASKAP J1935+2148 BD+23 3912 G 185-32 GD 385 GS 2000+25 HIP 100963 PSR B1919+21 PSR B1930+22 PSR B1937+21 PSR B1953+29 PSR B2020+28 PSR J1946+2052 PSR J2007+2722 Wolf 1346 WR 125 XTE J1859+226 SGR 1935+2154
Exoplanets HD 188015 b HD 189733 b
Star clusters Brocchi's Cluster NGC 6885 NGC 6940
Nebulae Dumbbell Nebula Hen 2-437 Sh2-88
Galaxies	NGC 7052 7080 Other 3C 433
Astronomical events AT 2021lwx
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