W Andromedae

W Andromedae
	; The visual band light curve of W Andromedae, from AAVSO data
Observation data; Epoch J2000 Equinox J2000
Constellation	Andromeda
Right ascension	02h 17m 32.96122s
Declination	+44° 18′ 17.7573″
Apparent magnitude (V)	6.7 – 14.6 variable
Characteristics
Spectral type	S6,1e-S9,2e
Variable type	Mira
Astrometry
Radial velocity (Rv)	−38.19±0.4 km/s
Proper motion (μ)	RA: −0.162 mas/yr ; Dec.: −2.516 mas/yr
Parallax (π)	2.2125 ± 0.0953 mas
Distance	1,470 ± 60 ly ; (450 ± 20 pc)
Absolute magnitude (MV)	-5.27
Other designations
	HD 14028, BD+43 461a, HIP 10687, HR 663.
Database references
SIMBAD	data

W Andromedae is a variable star in the constellation of Andromeda. It is classified as a Mira variable and S-type star,^[6] and varies from an apparent visual magnitude of 14.6 at minimum brightness to a magnitude of 6.7 at maximum brightness, with a period of approximately 397.3 days.^[3] The star is losing mass due to stellar winds at a rate of 2.79×10⁻⁷ M_☉/yr.^[5]

References

^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
^ ^a ^b ^c ^d ^e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
^ ^a ^b ^c ^d W And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2009-06-22.
^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (December 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 340: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.
^ ^a ^b Guandalini, R. (April 2010). "Infrared photometry and evolution of mass-losing AGB stars. III. Mass loss rates of MS and S stars". Astronomy and Astrophysics. 513: A4. arXiv:1002.2458. Bibcode:2010A&A...513A...4G. doi:10.1051/0004-6361/200911764. S2CID 119193286.
^ [1] International Variable Star Index, Accessed 2012-01-19

This variable star–related article is a stub. You can help Wikipedia by expanding it.

[aavso-1] "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.

[Gaia-2] Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.

[gcvs-3] W And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2009-06-22.

[Famaey2005-4] Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (December 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 340: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.

[Guandalini2010-5] Guandalini, R. (April 2010). "Infrared photometry and evolution of mass-losing AGB stars. III. Mass loss rates of MS and S stars". Astronomy and Astrophysics. 513: A4. arXiv:1002.2458. Bibcode:2010A&A...513A...4G. doi:10.1051/0004-6361/200911764. S2CID 119193286.

[VSX-6] [1] International Variable Star Index, Accessed 2012-01-19

[1]

[2]

[3]

[4]

[5]

[6]

Observation data Epoch J2000 Equinox J2000
The visual band light curve of W Andromedae, from AAVSO data^[1]
Constellation	Andromeda
Right ascension	02^h 17^m 32.96122^s^[2]
Declination	+44° 18′ 17.7573″^[2]
Apparent magnitude (V)	6.7 – 14.6 variable ^[3]
Characteristics
Spectral type	S6,1e-S9,2e^[3]
Variable type	Mira^[3]
Astrometry

Radial velocity (R_v)	−38.19±0.4^[4] km/s
Proper motion (μ)	RA: −0.162^[2] mas/yr Dec.: −2.516^[2] mas/yr
Parallax (π)	2.2125 ± 0.0953 mas^[2]
Distance	1,470 ± 60 ly (450 ± 20 pc)
Absolute magnitude (M_V)	-5.27^[5]

Other designations
HD 14028, BD+43 461a, HIP 10687, HR 663.
Database references
SIMBAD	data