HD 153221

HD 153221
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17h 00m 26.95941s
Declination	−48° 38′ 51.9319″
Apparent magnitude (V)	6.00 (6.34 + 7.69)
Characteristics
Spectral type	G8/K0 III + G
B−V color index	+0.88
Astrometry
Radial velocity (Rv)	−28.6 km/s
Proper motion (μ)	RA: −17.93 mas/yr ; Dec.: −80.49 mas/yr
Parallax (π)	9.36 ± 0.75 mas
Distance	350 ± 30 ly ; (107 ± 9 pc)
Details
Luminosity	49.5 L☉
Temperature	4,993 K
Rotational velocity (v sin i)	4.4 km/s
Other designations
	CD-48° 11360, HD 153221, HIP 83216, HR 6300, SAO 227542.
Database references
SIMBAD	data

HD 153221 is a double star in the southern constellation of Ara. As of 2012, the pair have an angular separation of 1.10″ along a position angle of 172°.^[3]

References[edit]

^ ^a ^b ^c ^d ^e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
^ ^a ^b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
^ ^a ^b Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
^ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E.
^ ^a ^b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352
^ Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377^{[permanent dead link]}

External links[edit]

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[vanLeeuwen2007-1] van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.

[aass34_1-2] Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.

[WDSC2014-3] Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22

[houk1978-4] Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.

[rgcrv-5] Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E.

[Mcdonald2012-6] McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352

[aaa493_3_1099-7] Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377^{[permanent dead link]}

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Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17^h 00^m 26.95941^s^[1]
Declination	−48° 38′ 51.9319″^[1]
Apparent magnitude (V)	6.00^[2] (6.34 + 7.69)^[3]
Characteristics
Spectral type	G8/K0 III + G^[4]
B−V color index	+0.88^[2]
Astrometry

Radial velocity (R_v)	−28.6^[5] km/s
Proper motion (μ)	RA: −17.93^[1] mas/yr Dec.: −80.49^[1] mas/yr
Parallax (π)	9.36 ± 0.75 mas^[1]
Distance	350 ± 30 ly (107 ± 9 pc)

Details

Luminosity	49.5^[6] `L`_☉
Temperature	4,993^[6] K
Rotational velocity (v sin i)	4.4^[7] km/s

Other designations
CD-48° 11360, HD 153221, HIP 83216, HR 6300, SAO 227542.
Database references
SIMBAD	data