Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aries |
Right ascension | 02h 49m 59.03324s [1] |
Declination | +27° 15′ 37.8260″ [1] |
Apparent magnitude (V) | 3.63 [2] |
Characteristics | |
Spectral type | B8 Vn [3] |
U−B color index | –0.38 [2] |
B−V color index | –0.10 [2] |
Astrometry | |
Radial velocity (Rv) | +4 [4] km/s |
Proper motion (μ) |
RA: +66.81
[1]
mas/
yr Dec.: –116.52 [1] mas/ yr |
Parallax (π) | 19.69 ± 0.19 mas [1] |
Distance | 166 ± 2
ly (50.8 ± 0.5 pc) |
Details | |
Mass | 3.1±0.1 [5] M☉ |
Luminosity | 160 [6] L☉ |
Temperature | 11900 [6] K |
Rotational velocity (v sin i) | 175 [7] km/s |
Age | 130+10 −30 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
41 Arietis (abbreviated 41 Ari) is a triple star system in the northern constellation of Aries. With an apparent visual magnitude of 3.63, [2] this system is readily visible to the naked eye. It has an annual parallax shift of 19.69 mas, [1] which indicates it is at a distance of 166 light-years (51 parsecs) from the Sun.
The system consists of a binary pair, [9] designated 41 Arietis A, together with a third companion star, 41 Arietis D. (41 Arietis B and C form optical pairs with A, but are not physically related. [10]) The components of A are themselves designated 41 Arietis Aa (formally named Bharani /ˈbærəni/) [11] and Ab.
41 Arietis is the system's Flamsteed designation. It does not possess a Greek-letter Bayer designation, since this system was once part of the now-obsolete constellation Musca Borealis, but is sometimes designated c Arietis. The designations of the two constituents as 41 Arietis A and D, and those of A's components - 41 Arietis Aa and Ab - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). [12]
Nicolas-Louis de Lacaille called the star Līliī Austrīnā ( /ɔːˈstraɪnə/) 'southern of Lilium' (in Latin) in 1757, [13] [14] as a star of the now-defunct constellation of Lilium (the Lily). To him 39 Arietis was Līliī Boreā, 'northern of Lilium'.
In Hindu astronomy, Bharani (भरणी bharaṇī, Sanskrit pronunciation: [ˈbʱɐɽɐɳiː]) is the second nakshatra, or lunar mansion corresponding to 35, 39 and 41 Arietis. In 2016, the IAU organized a Working Group on Star Names (WGSN) [15] to catalog and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems. [16] It approved the name Bharani for the component 41 Arietis Aa on 30 June 2017 and it is now so included in the List of IAU-approved Star Names. [11]
In Chinese, 胃宿 (Wèi Su), meaning Stomach (asterism), refers to an asterism consisting of 41, 35 and 39 Arietis. [17] Consequently, the Chinese name for 41 Arietis itself is 胃宿三 (Wèi Su sān, English: the Third Star of Stomach.) [18]
In Avestan, the star was known as Upa-paoiri, and it was associated with one of the yazatas. [19]
The primary component is a B-type main sequence star with a stellar classification of B8 Vn. [3] The suffix 'n' indicates 'nebulous' absorption lines in the star's spectrum caused by the Doppler effect of rapid rotation. It has a projected rotational velocity of 175 km/s. [7] This is creating an equatorial bulge that is 12% larger than the star's polar radius. [20] It is a candidate member of the AB Doradus moving group [6] and has an orbiting companion at an angular separation of 0.3 arcseconds. [9]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aries |
Right ascension | 02h 49m 59.03324s [1] |
Declination | +27° 15′ 37.8260″ [1] |
Apparent magnitude (V) | 3.63 [2] |
Characteristics | |
Spectral type | B8 Vn [3] |
U−B color index | –0.38 [2] |
B−V color index | –0.10 [2] |
Astrometry | |
Radial velocity (Rv) | +4 [4] km/s |
Proper motion (μ) |
RA: +66.81
[1]
mas/
yr Dec.: –116.52 [1] mas/ yr |
Parallax (π) | 19.69 ± 0.19 mas [1] |
Distance | 166 ± 2
ly (50.8 ± 0.5 pc) |
Details | |
Mass | 3.1±0.1 [5] M☉ |
Luminosity | 160 [6] L☉ |
Temperature | 11900 [6] K |
Rotational velocity (v sin i) | 175 [7] km/s |
Age | 130+10 −30 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
41 Arietis (abbreviated 41 Ari) is a triple star system in the northern constellation of Aries. With an apparent visual magnitude of 3.63, [2] this system is readily visible to the naked eye. It has an annual parallax shift of 19.69 mas, [1] which indicates it is at a distance of 166 light-years (51 parsecs) from the Sun.
The system consists of a binary pair, [9] designated 41 Arietis A, together with a third companion star, 41 Arietis D. (41 Arietis B and C form optical pairs with A, but are not physically related. [10]) The components of A are themselves designated 41 Arietis Aa (formally named Bharani /ˈbærəni/) [11] and Ab.
41 Arietis is the system's Flamsteed designation. It does not possess a Greek-letter Bayer designation, since this system was once part of the now-obsolete constellation Musca Borealis, but is sometimes designated c Arietis. The designations of the two constituents as 41 Arietis A and D, and those of A's components - 41 Arietis Aa and Ab - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). [12]
Nicolas-Louis de Lacaille called the star Līliī Austrīnā ( /ɔːˈstraɪnə/) 'southern of Lilium' (in Latin) in 1757, [13] [14] as a star of the now-defunct constellation of Lilium (the Lily). To him 39 Arietis was Līliī Boreā, 'northern of Lilium'.
In Hindu astronomy, Bharani (भरणी bharaṇī, Sanskrit pronunciation: [ˈbʱɐɽɐɳiː]) is the second nakshatra, or lunar mansion corresponding to 35, 39 and 41 Arietis. In 2016, the IAU organized a Working Group on Star Names (WGSN) [15] to catalog and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems. [16] It approved the name Bharani for the component 41 Arietis Aa on 30 June 2017 and it is now so included in the List of IAU-approved Star Names. [11]
In Chinese, 胃宿 (Wèi Su), meaning Stomach (asterism), refers to an asterism consisting of 41, 35 and 39 Arietis. [17] Consequently, the Chinese name for 41 Arietis itself is 胃宿三 (Wèi Su sān, English: the Third Star of Stomach.) [18]
In Avestan, the star was known as Upa-paoiri, and it was associated with one of the yazatas. [19]
The primary component is a B-type main sequence star with a stellar classification of B8 Vn. [3] The suffix 'n' indicates 'nebulous' absorption lines in the star's spectrum caused by the Doppler effect of rapid rotation. It has a projected rotational velocity of 175 km/s. [7] This is creating an equatorial bulge that is 12% larger than the star's polar radius. [20] It is a candidate member of the AB Doradus moving group [6] and has an orbiting companion at an angular separation of 0.3 arcseconds. [9]