53 Aurigae

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53 Aurigae
Observation data
Epoch J2000       Equinox J2000
Constellation Auriga
Right ascension 06h 38m 23.01009s [1]
Declination +28° 59 03.6220 [1]
Apparent magnitude  (V)5.744 [2]
Characteristics
Spectral type B9 Mn + F0m [3]
U−B color index 0.07 [4]
B−V color index 0.02 [4]
Astrometry
Radial velocity (Rv)13.1±5.0 [5]  km/s
Proper motion (μ)RA: −16.390 [1]   mas/yr
Dec.: −14.305 [1]   mas/yr
Parallax (π)8.5139 ± 0.1372  mas [1]
Distance 383 ± 6  ly
(117 ± 2  pc)
Absolute magnitude  (MV)+0.48 [6]
Orbit [7]
Period (P)38.90 yr
Semi-major axis (a)0.159″
Eccentricity (e)0.557
Inclination (i)119.5°
Longitude of the node (Ω)113.5°
Periastron epoch (T) B 1976.73
Argument of periastron (ω)
(secondary)
343.3°
Details
53 Aur A
Mass 2.49±0.13 [8]   M
Surface gravity (log g)4.0 [3]   cgs
Temperature 10750 [3]   K
Rotational velocity (v sin i)25 [3]  km/s
53 Aur B
Surface gravity (log g)4.0 [3]   cgs
Temperature 7,250 [3]   K
Rotational velocity (v sin i)0 [3]  km/s
Other designations
BD+29°1293, GC  8649, HD  47152, HIP  31737, HR  2425, SAO  78571, PPM  96293, CCDM J06384+2859, WDS J06384+2859, TYC  1892-236-1, GSC  01892-00236
Database references
SIMBAD data

53 Aurigae is a binary star system in the northern constellation of Auriga. It is visible to the naked eye as a dim star with a combined apparent visual magnitude of 5.74. [2] Parallax estimates put it at a distance of 383 light-years (117 parsecs ) away. [1] The system is receding from the Earth with a heliocentric radial velocity of 13 km/s. [5]

The two components of 53 Aurigae orbit each other every 39 years with an eccentricity of 0.557. [7] The primary component, 53 Aurigae A, is chemically peculiar since it contains higher-than-normal amounts of manganese, [3] but also europium, chromium, and mercury. [8] It is a B-type main-sequence mercury-manganese star, [8] while the secondary component, 53 Aurigae B, is an early F-type main-sequence star. [8] The total mass of the system is estimated to be 4.8 M. [8]

Related Research Articles

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<span class="mw-page-title-main">14 Aurigae</span> Quadruple star system in the constellation Auriga

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<span class="mw-page-title-main">54 Eridani</span> Star in the constellation Eridanus

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Tau<sup>9</sup> Eridani Binary star in the constellation Eridanus

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<span class="mw-page-title-main">Phi Herculis</span> Star in the constellation Hercules

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Lambda Lupi, Latinized from λ Lupi, is a triple star system in the southern constellation of Lupus. It is visible to the naked eye with a combined apparent visual magnitude of 4.04. Based upon an annual parallax shift of just 4.20 mas as seen from Earth, it is located roughly 800 light years from the Sun. The system has a peculiar velocity of 27.4±4.9 km/s relative to its neighbors, making it a candidate runaway star system. It is a member of the Upper Centaurus–Lupus sub-group in the Scorpius–Centaurus OB association.

<span class="mw-page-title-main">41 Tauri</span> Star in the constellation Taurus

41 Tauri is a single-lined spectroscopic binary system in the zodiacal constellation of Taurus; 41 Tauri is its Flamsteed designation. The star has a visual magnitude of 5.19, making it visible to the naked eye from brighter suburban skies. Parallax measurements put it at a distance of roughly 404 light years from the Sun.

References

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