30 Arietis

Database links to 30 Arietis

Double star 30 Arietis
Observation dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation	Aries
Known exoplanets	1
Astrometry
Radial velocity	14.9 km / s 17.2 km / s
parallax	22.13 ± 0.07 22.36 ± 0.05 mas
distance	147.3 ± 0.5 years 145.8 ± 0.3 years (45.2 ± 0.1 pc 44.7 ± 0.1 pc )
Proper movement :
Rec. Share:	136.86 ± 0.14 mas / a 141.41 ± 0.08 mas / a
Dec. portion:	-15.19 ± 0.14 mas / a -10.68 ± 0.09 mas / a
Individual data
Names	30 Arietis A; 30 Arietis B
Observation data:
Right ascension	30 Arietis A	02 h 37 m 00.523 s
	30 Arietis B	02 h 36 m 57.74 s
declination	30 Arietis A	+ 24 ° 38 ′ 49.988 ″
	30 Arietis B	+ 24 ° 38 ′ 53.0 ″
Apparent brightness	30 Arietis A	6.48 likes
	30 Arietis B	7.09 likes
Typing:
Spectral class	30 Arietis A	F5 V
	30 Arietis B	F6 V
B − V color index	30 Arietis A	0.410
	30 Arietis B	0.510
U − B color index	30 Arietis A	0.02
Physical Properties:
Absolute vis. Brightness M vis	30 Arietis A	3.46 likes
	30 Arietis B	4.11 likes
Dimensions	30 Arietis A	1.31 ± 0.04 M ☉
	30 Arietis B	1.16 ± 0.04 M ☉
radius	30 Arietis A	1.37 ± 0.03 R ☉
	30 Arietis B	1.13 ± 0.03 R ☉
Luminosity	30 Arietis A	3.6 L ☉
	30 Arietis B	1.964 L ☉
Effective temperature	30 Arietis A	6,300 ± 100 K
	30 Arietis B	6,424 ± 180 K
Metallicity [Fe / H]	30 Arietis A
	30 Arietis B	0.07 ± 0.2
Age	0.91 ± 0.03 bill. A
Other names and catalog entries
Flamsteed name 30 Arietis Bonn survey BD + 24 ° 376 BD + 24 ° 375 Bright Star Catalog HR 765 HR 764 Henry Draper Catalog HD 16246 HD 16232 SAO catalog SAO 75471 SAO 75470 Tycho catalog TYC 1771-1398-1 [1] TYC 1771-1397-1 [2] Hipparcos catalog HIP 12189 HIP 12184 WDS catalog WDS 02370 + 2439 Further designations: CCDM 02370 + 2439

30 Arietis (also abbreviated 30 Ari ) is a four-fold star in the constellation Aries , which is visible in the sky as a faint star 6th magnitude . It is just under 150 light years from the sun.

Star system

The two main components 30 Arietis A and B are 38.1 ", or about 1.500 AE away from each other. They belong to the Spectral F and are main-sequence stars which its radiation energy by hydrogen burning release in their nuclei. 30 Arietis A in turn is a spectroscopic binary with an orbital period of 1.1 days. with 910 million years, 30 Arietis only a fifth of the age of the sun .

Planetary system

→ Main article: 30 Arietis Bb

The component 30 Arietis B is orbited at a distance of 1 AU from an exoplanet , the discovery of which was announced on November 27, 2009.

See also

• List of extrasolar planets

Web links

• North Central Kansas Astronomical Society: 30 Arietis. Retrieved April 27, 2015 .  (English)
• North Central Kansas Astronomical Society: Double Stars. Retrieved April 27, 2015 .  (English)
• National Astronautics and Space Administration: Double Date: Two Pairs of Stars in One System. Retrieved April 27, 2015 .  (English)
• Stars and Space from March 5, 2015: An extrasolar planet with four suns. Retrieved April 27, 2015 .  (German)

Individual evidence

1. ^ ^{A b} van Leeuwen, F .: Validation of the new Hipparcos reduction . arxiv : 0708.1752 .
2. ^ STF 4005. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 15, 2019 . 
3. ^ STF 4005. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed September 15, 2019 . 
4. ^ STF 4005. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed September 15, 2019 . 
5. ↑ ^{a b c d e f} Guenther, EW et al .: A substellar component orbiting the star 30 F-Ari B . arxiv : 0912.4619 .
6. ↑ National Astronautics and Space Administration: Planet 'Reared' by Four Parent Stars. Retrieved April 27, 2015 . 
7. ↑ Morbey, CL; Brosterhus, EB: A Search for Spectroscopic Binaries from Published Radial Velocity Data . bibcode : 1974PASP ... 86..455M .