Mahasim

Database links to Theta Aurigae

Double star Mahasim (θ Aurigae)
AladinLite
Observation dates equinox :  J2000.0 , epoch : J2000.0
Constellation	Carter
Right ascension	05 h 59 m 43.27 s
declination	+ 37 ° 12 ′ 45.3 ″
Apparent brightness	2.62 to 2.70 mag
Typing
B − V color index	(−0.08)
U − B color index	(−0.18)
R − I index	(−0.06)
Spectral class	A0pSi / F2-5 V
Variable star type	ACV
Astrometry
Radial velocity	(29.3 ± 1.7) km / s
parallax	(19.70 ± 0.16)  mas
distance	(165 ± 2)  ly (51)  pc
Proper movement
Rec. Share:	(43.63 ± 0.21)  mas / a
Dec. portion:	(−73.79 ± 0.08)  mas / a
Physical Properties
radius	(5.1 ± 0.4)  R ☉
Effective temperature	(10400 ± 300)  K.
Rotation time	3.62 d
Other names and catalog entries
Bayer name θ aurigae Flamsteed name 37 Aurigae Bonn survey BD + 37 ° 1380 Bright Star Catalog HR 2095 [1] Henry Draper Catalog HD 40312 [2] Hipparcos catalog HIP 28380 [3] SAO catalog SAO 58636 [4] Tycho catalog TYC 2418-1573-1 [5] 2MASS catalog 2MASS J05594324 + 3712452 [6] Other names ADS 4566, Mahasim

Mahasim is an Ap star in the constellation Fuhrmann, about 170  light years away, with an apparent magnitude of around 2.7 mag. A companion star of the spectral class F2-5 V with an apparent magnitude of 7.2 mag is located at a distance of just under 4  arc seconds .

The star also bears the historical proper name Bogardus and - in traditional Chinese astronomy - 五 車 四.

swell

• Adelman, SJ; Hensberge, H .; van Rensbergen, W .: General study of the apparently average magnetic Ap star theta Aurigae. I. Data and method ; in: Astronomy and Astrophysics Supplement Series ( ISSN  0365-0138 ), Vol. 57, pp. 121ff. (July 1984), bibcode : 1984A & AS ... 57..121A

Web links

• http://stars.astro.illinois.edu/sow/thetaaur.html

Individual evidence

1. ↑ ^{a b c d e f} tet Aur. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 8, 2018 . 
2. ↑ ^{a b} C. Schröder, JHMM Schmitt: X-ray emission from A-type stars . In: Astronomy and Astrophysics . 475, No. 2, November 2007, pp. 677-684. bibcode : 2007A & A ... 475..677S . doi : 10.1051 / 0004-6361: 20077429 .
3. ↑ ^{a b} tet Aur. In: VSX. AAVSO, accessed September 8, 2018 . 
4. ↑ ^{a b} D. Shulyak, G. Valyavin, O. Kochukhov, B.-C. Lee, G. Galazutdinov, K.-M. Kim, I. Han, T. Burlakova, V. Tsymbal: The Lorentz force in atmospheres of CP stars: θ Aurigae . In: Astronomy & Astrophysics . 464, No. 3, March 2007, pp. 1089-1099. arxiv : astro-ph / 0612301 . bibcode : 2007A & A ... 464.1089S . doi : 10.1051 / 0004-6361: 20064998 .
5. ↑ JB Rice, DE Holmgren, DA Bohlender: The distribution of oxygen on the surface of the Ap star θ Aur. An abundance Doppler image to compare with ɛ UMa . In: Astronomy and Astrophysics . 424, September 2004, pp. 237-244. bibcode : 2004A & A ... 424..237R . doi : 10.1051 / 0004-6361: 20035639 .
6. ↑ List of names verified by the IAU