HD 16028

HD 16028
Observation data; Epoch J2000 Equinox J2000
Constellation	Andromeda
Right ascension	02h 35m 38.7415s
Declination	+37° 18′ 44.1425″
Apparent magnitude (V)	5.71
Characteristics
Spectral type	K3III
B−V color index	1.41
Astrometry
Radial velocity (Rv)	−5.48±0.20 km/s
Proper motion (μ)	RA: −1.454±0.217 mas/yr ; Dec.: −13.822±0.177 mas/yr
Parallax (π)	4.4409 ± 0.1180 mas
Distance	730 ± 20 ly ; (225 ± 6 pc)
Details
Luminosity	299.05 L☉
Temperature	4,371 K
Other designations
	BD+36° 519, SAO 55684, HIP 12072, HR 748.
Database references
SIMBAD	data

HD 16028 is a star in the constellation Andromeda. Its apparent magnitude is 5.71.^[2] Located approximately 225 parsecs (730 ly) distant,^[1] it is an orange giant of spectral type K3III,^[3] a star that has used up its core hydrogen and has expanded.

Double star catalogues list two stars as optical companions. One has a magnitude of 10.9 and is separated by 16.9 arcseconds. It has been suggested it is related to the primary,^[3] but parallax measured by Gaia yields a much greater distance for this star in comparison to HD 16028.^[5] The other is even fainter and is separated 45 arcseconds from the primary.^[6]

References

^ ^a ^b ^c ^d ^e ^f ^g Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.
^ ^a ^b ^c Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
^ McDonald, I.; Zijlstra, A. A.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ "UCAC4 637-009202". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 3, 2019.

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[Gaia-1] ^ ^a ^b ^c ^d ^e ^f ^g Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[TYCHO-2] Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.

[Eggleton-3] Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.

[McDonald2012-4] McDonald, I.; Zijlstra, A. A.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.

[Gaia2-5] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[SIMBAD_C-6] "UCAC4 637-009202". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 3, 2019.

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Observation data Epoch J2000 Equinox J2000
Constellation	Andromeda
Right ascension	02^h 35^m 38.7415^s^[1]
Declination	+37° 18′ 44.1425″^[1]
Apparent magnitude (V)	5.71^[2]
Characteristics
Spectral type	K3III^[3]
B−V color index	1.41^[2]
Astrometry

Radial velocity (R_v)	−5.48±0.20^[1] km/s
Proper motion (μ)	RA: −1.454±0.217^[1] mas/yr Dec.: −13.822±0.177^[1] mas/yr
Parallax (π)	4.4409 ± 0.1180 mas^[1]
Distance	730 ± 20 ly (225 ± 6 pc)

Details^[4]

Luminosity	299.05 `L`_☉
Temperature	4,371 K

Other designations
BD+36° 519, SAO 55684, HIP 12072, HR 748.
Database references
SIMBAD	data

References

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