HD 142

Database links to HD 142

Double star HD 142
Observation dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation	Phoenix
Apparent brightness	5.7 likes
Known exoplanets	2
Astrometry
parallax	(38.89 ± 0.37) mas (38.30 ± 0.09) mas
distance	(83.8 ± 0.8) Ly (84.9 ± 0.2) Ly (25.7 ± 0.3) pc (26.1 ± 0.1 pc )
Proper movement :
Rec. Share:	(575.29 ± 0.33) mas / a (566.92 ± 0.39) mas / a
Dec. portion:	(−39.19 ± 0.34) mas / a (−16.88 ± 0.27) mas / a
Individual data
Names	A; B.
Observation data:
Right ascension	A.	00 h 06 m 19,175 s
	B.	00 h 06 m 19,148 s
declination	A.	−49 ° 04 ′ 30,682 ″
	B.	−49 ° 04 ′ 35.918 ″
Apparent brightness	A.	5.7 likes
	B.	11.5 likes
Typing:
Spectral class	A.	F7 V
	B.	K5
B − V color index	A.	(0.54)
Physical Properties:
Dimensions	A.	(1.23   +0.22−0.16) M ☉
	B.
radius	A.	(1.47 ± 0.04) R ☉
	B.
Effective temperature	A.	(6245 ± 48) K.
	B.
Metallicity [Fe / H]	A.	(0.09 ± 0.05)
	B.
Age	(5.93) billion
Other names and catalog entries
Cordoba Survey CD -49 ° 14337 Bright Star Catalog HR 6 [1] Henry Draper Catalog HD 142 [2] SAO catalog SAO 214963 [3] Tycho catalog TYC 8025-341-1 [4] Hipparcos catalog HIP 522 [5] WDS catalog WDS J00063-4905 Further designations: FY 4.2, FY 9002   LHS 1020 LHS 1021

HD 142 is a star in the constellation Phoenix that is orbited by an exoplanet . The star has an apparent magnitude of 5.7  mag and is about 26  parsecs (about 84  light years ) away from Earth . The spectral class of the main star is F7 V. It has a stellar companion of the spectral class K.

Planetary system

The exoplanet orbiting the star with a period of about 350 days is designated HD 142 b and has a mass of at least 1.3  Jupiter's masses . HD 142 b was discovered by measuring the radial velocity in 2001. The exoplanet orbits the central star at a distance of approximately one AU . Another companion, the HD 143 c , was discovered in 2012. It orbits the central star at a distance of 6.8 AU on a much wider orbit with an orbit of about 16 years (6000 days). Its mass is again significantly higher with 5 times the mass of Jupiter.

swell

• Tinney et al .: Two Extrasolar Planets from the Anglo-Australian Planet Search . In: The Astrophysical Journal . 571, 2002, pp. 528-531.
• Butler, R. et al .: Catalog of Nearby Exoplanets . In: The Astrophysical Journal . 646, 2006, pp. 505 - 522. ( web preprint )

Individual evidence

1. ↑ ^{a b c d e} HD 142. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed October 27, 2019 . 
2. ↑ ^{a b c d} HD 142B. In: SIMBAD . Center de Données astronomiques de Strasbourg, accessed October 27, 2019 . 
3. ↑ ^{a b c d e} HD 142. NASA Exoplanet Archive , accessed October 27, 2019 . 
4. ↑ ^{a b} HD 142 b. Extrasolar Planets Encyclopaedia , accessed October 27, 2019 .