Alpha Volantis

α Volantis
	Template:Location mark; Location of α Volantis (circled)
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Volans
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	+4.00
Characteristics
Spectral type	kA3hA5mA5 V
U−B Template:Engvar	+0.13
B−V Template:Engvar	+0.14
Astrometry
Radial velocity (Rv)	+4.9 km/s
Proper motion (μ)	RA: −2.00 mas/yr ; Dec.: +95.51 mas/yr
Parallax (π)	26.11±0.12 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	+1.60
Orbit
Period (P)	0.652 ± 0.001 yr
Semi-major axis (a)	0.0321 ± 0.0013″
Eccentricity (e)	0.041 ± 0.038
Inclination (i)	101.9 ± 2.3°
Longitude of the node (Ω)	105.3 ± 1.4°
Periastron epoch (T)	2015.593 ± 0.063
Argument of periastron (ω); (secondary)	248.5 ± 34.2°
Details
Mass	1.87 Template:Solar mass
Radius	1.9 Template:Solar radius
Surface gravity (log g)	4.09 cgs
Temperature	8,198 K
Metallicity [Fe/H]	+0.19 dex
Rotational velocity (v sin i)	Template:Val km/s
Age	Template:Val Myr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
	CPD−65°1065, FK5 343, GJ 333.3, GJ 9284, HD 78045, HIP 44382, HR 3615, SAO 250422
Database references
SIMBAD	data

Template:Short description

Script error: No such module "Check for unknown parameters".

Alpha Volantis (Alpha Vol), Latinized from α Volantis, is a binary star^[12] system located in the southern constellation Volans. It has an apparent visual magnitude of +4.00, which is bright enough to be seen with the naked eye. Based upon parallax measurements made with the Hipparcos spacecraft, it is located at a distance of 125 light years from the Sun. As of 2010, the two components of this system had an angular separation of 0.0318″ along a position angle of 286.9°. The magnitude difference between the two components is 0.1.^[13] It is considered a member of the Sirius supercluster.^[5]

The primary component is an Am star with a stellar classification of kA3hA5mA5 V.^[3] This notation indicates the star has the weak calcium II K-line of an A3 star, and the hydrogen and metallic lines of an A5 star.^[14] It has an estimated age of 427 million years.^[10] In 1992, it was found to be emitting an infrared excess, suggesting the presence of a circumstellar disk of dust.^[15] However, subsequent observations have not confirmed this.^[16]

References

Template:Reflist

Template:Stars of Volans

↑ ^a ^b ^c ^d ^e Cite error: Invalid <ref> tag; no text was provided for refs named van Leeuwen2007
↑ ^a ^b ^c Cite error: Invalid <ref> tag; no text was provided for refs named Mermilliod1986
↑ ^a ^b ^c ^d ^e Cite error: Invalid <ref> tag; no text was provided for refs named aj132_1_161
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Wielen1999
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1998
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Tokovinin2019
↑ Cite error: Invalid <ref> tag; no text was provided for refs named David2015
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Cadars2001
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Diaz2011
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named apj546_1_352
↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Hartkopf2012
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Gray2009
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Cheng1992
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Gaspar2013

[van_Leeuwen2007-1] Cite error: Invalid <ref> tag; no text was provided for refs named van Leeuwen2007

[Mermilliod1986-2] Cite error: Invalid <ref> tag; no text was provided for refs named Mermilliod1986

[aj132_1_161-3] Cite error: Invalid <ref> tag; no text was provided for refs named aj132_1_161

[Wielen1999-4] Cite error: Invalid <ref> tag; no text was provided for refs named Wielen1999

[Eggen1998-5] Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1998

[Tokovinin2019-6] Cite error: Invalid <ref> tag; no text was provided for refs named Tokovinin2019

[David2015-7] Cite error: Invalid <ref> tag; no text was provided for refs named David2015

[Cadars2001-8] Cite error: Invalid <ref> tag; no text was provided for refs named Cadars2001

[Diaz2011-9] Cite error: Invalid <ref> tag; no text was provided for refs named Diaz2011

[apj546_1_352-10] Cite error: Invalid <ref> tag; no text was provided for refs named apj546_1_352

[SIMBAD-11] Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD

[Eggleton2008-12] Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008

[Hartkopf2012-13] Cite error: Invalid <ref> tag; no text was provided for refs named Hartkopf2012

[Gray2009-14] Cite error: Invalid <ref> tag; no text was provided for refs named Gray2009

[Cheng1992-15] Cite error: Invalid <ref> tag; no text was provided for refs named Cheng1992

[Gaspar2013-16] Cite error: Invalid <ref> tag; no text was provided for refs named Gaspar2013

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

Observation data Epoch J2000.0 Equinox J2000.0
Template:Location mark Location of α Volantis (circled)
Constellation	Volans
Right ascension	Template:RA^[1]
Declination	Template:DEC^[1]
Apparent magnitude (V)	+4.00^[2]
Characteristics
Spectral type	kA3hA5mA5 V^[3]
U−B Template:Engvar	+0.13^[2]
B−V Template:Engvar	+0.14^[2]
Astrometry

Radial velocity (R_v)	+4.9^[4] km/s
Proper motion (μ)	RA: −2.00^[1] mas/yr Dec.: +95.51^[1] mas/yr
Parallax (π)	26.11±0.12 mas^[1]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (M_V)	+1.60^[5]

Orbit^[6]
Period (P)	0.652 ± 0.001 yr
Semi-major axis (a)	0.0321 ± 0.0013″
Eccentricity (e)	0.041 ± 0.038
Inclination (i)	101.9 ± 2.3°
Longitude of the node (Ω)	105.3 ± 1.4°
Periastron epoch (T)	2015.593 ± 0.063
Argument of periastron (ω) (secondary)	248.5 ± 34.2°
Details

Mass	1.87^[7] Template:Solar mass
Radius	1.9^[8] Template:Solar radius
Surface gravity (log g)	4.09^[3] cgs
Temperature	8,198^[3] K
Metallicity [Fe/H]	+0.19^[3] dex
Rotational velocity (v sin i)	Template:Val^[9] km/s
Age	Template:Val^[10] Myr

Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
CPD−65°1065, FK5 343, GJ 333.3, GJ 9284, HD 78045, HIP 44382, HR 3615, SAO 250422^[11]
Database references
SIMBAD	data

Alpha Volantis

References

Navigation menu

Search