HD 133002

HD 133002
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Ursa Minor
Right ascension	14h 50m 20.421s
Declination	+82° 30′ 42.99″
Apparent magnitude (V)	5.63
Characteristics
Spectral type	G2V
U−B color index	+0.17
B−V color index	+0.671±0.004
Astrometry
Radial velocity (Rv)	−44.38 km/s
Proper motion (μ)	RA: +177.593 mas/yr ; Dec.: −224.260 mas/yr
Parallax (π)	22.9030 ± 0.0496 mas
Distance	142.4 ± 0.3 ly ; (43.66 ± 0.09 pc)
Absolute magnitude (MV)	2.448
Details
HD 133002 A
Mass	1.51 M☉
Radius	3.4 R☉
Luminosity	9.54±0.04 L☉
Surface gravity (log g)	3.86 cgs
Temperature	5,515±1 K
Metallicity [Fe/H]	−0.41 dex
Rotational velocity (v sin i)	5.2 km/s
Age	2.80 Gyr
HD 133002 B
Mass	0.15±0.01 M☉
Other designations
	BD+83°431, FK5 1644, GJ 3876, HD 133002, HIP 72573, HR 5596, SAO 2459
Database references
SIMBAD	data
ARICNS	data

HD 133002 (HR 5596) is a possible binary^[9] star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65,^[4] it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5°^[1] means it is hidden from view from most of the southern hemisphere. Parallax measurements yield an estimated distance of around 142 light years from the Sun.^[1] If it was instead positioned at a distance of 33 ly (10 pc), this would be a second magnitude star.^[5] The system is drifting closer with a heliocentric radial velocity of −44 km/s.^[5]

This is a G-type main sequence star with a stellar classification of G2V,^[3] although it has also been classified as F9V or G0V.^[11] With spectral absorption lines of metals and absorption bands of some molecules weaker than expected based on its hydrogen lines, it is defined as a weak line star. Based on its G-band strengths, it would we given a class of G0, and based on its metal lines a class of G1.^[3]

It is estimated to have 51% greater mass than the Sun, and is younger with an age of around 2.8 billion years.^[6] The projected rotational velocity along the star's equator is a relatively leisurely 5.2 km/s.^[7] The star is considered a photometric solar analog, although it is deficient in elements more massive than helium when compared to the Sun.^[12] The chemical composition and relatively low surface gravity for a star of its classification suggest that this may instead be a subgiant star that is in the process of evolving away from the main sequence.^[13] The effective temperature of the star's photosphere is 5,515 K,^[1] giving it the yellow-white hue of a G-type star.^[14]

This star has been examined for evidence of an infrared excess, but none was detected.^[15] During a 2006−2007 survey of nearby stars, it was discovered that HD 133002 has a low-mass common proper motion stellar companion. This object has an estimated 15% of the Sun's mass. It has a projected separation of around 80 AU from the primary, which suggests an orbital period of roughly 700 years. At present, there is insufficient observational data available to determine orbital elements.^[9]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ ^a ^b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
^ ^a ^b ^c Abt, Helmut A. (1986). "Spectral Classification of Weak-lined Stars Discovered Photometrically". The Astrophysical Journal. 309: 260. Bibcode:1986ApJ...309..260A. doi:10.1086/164597.
^ ^a ^b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.
^ ^a ^b ^c ^d Soubiran, C.; et al. (March 2008), "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants", Astronomy and Astrophysics, 480 (1): 91–101, arXiv:0712.1370, Bibcode:2008A&A...480...91S, doi:10.1051/0004-6361:20078788, S2CID 16602121.
^ ^a ^b ^c Casagrande, L.; et al. (June 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.
^ ^a ^b ^c Schröder, C.; et al. (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]}
^ Maldonado, J.; et al. (May 2012), "Metallicity of solar-type stars with debris discs and planets", Astronomy and Astrophysics, 541: A40, arXiv:1202.5884, Bibcode:2012A&A...541A..40M, doi:10.1051/0004-6361/201218800, S2CID 46328823.
^ ^a ^b ^c Heinze, A. N.; et al. (May 2010), "Constraints on Long-period Planets from an L'- and M-band Survey of Nearby Sun-like Stars: Observations", The Astrophysical Journal, 714 (2): 1551–1569, arXiv:1003.5340, Bibcode:2010ApJ...714.1551H, doi:10.1088/0004-637X/714/2/1551, S2CID 119199321.
^ "HD 133002". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-01-09.{{cite web}}: CS1 maint: postscript (link)
^ Skiff, B. A. (2014). "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)". VizieR On-line Data Catalog: B/Mk. Originally Published in: Lowell Observatory (October 2014). 1. Bibcode:2014yCat....1.2023S.
^ Bikmaev, I.; et al. (2005), Hill, V.; François, P.; Primas, F. (eds.), "Chemical compositions of photometric solar-analog stars and F-G stars of different ages", From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution, IAU Symposium Proceedings of the international Astronomical Union 228, Held in Paris, France, May 23–27, 2005, vol. 1, Cambridge University Press, pp. 239–240, Bibcode:2005IAUS..228..239B, doi:10.1017/S1743921305005624.
^ Galeev, A. I.; et al. (June 2004), "Chemical Composition of 15 Photometric Analogues of the Sun", Astronomy Reports, 48 (6): 492–510, Bibcode:2004ARep...48..492G, doi:10.1134/1.1767216, S2CID 119473855.
^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2016-01-12.
^ Trilling, D. E.; et al. (February 2008), "Debris Disks around Sun-like Stars", The Astrophysical Journal, 674 (2): 1086–1105, arXiv:0710.5498, Bibcode:2008ApJ...674.1086T, doi:10.1086/525514, S2CID 54940779.

[GaiaDR3-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[Anderson_Francis_2012-2] Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.

[abt1986-3] Abt, Helmut A. (1986). "Spectral Classification of Weak-lined Stars Discovered Photometrically". The Astrophysical Journal. 309: 260. Bibcode:1986ApJ...309..260A. doi:10.1086/164597.

[MERMILLIOD-4] Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.

[aaa480_1_91-5] Soubiran, C.; et al. (March 2008), "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants", Astronomy and Astrophysics, 480 (1): 91–101, arXiv:0712.1370, Bibcode:2008A&A...480...91S, doi:10.1051/0004-6361:20078788, S2CID 16602121.

[aa530_A138-6] Casagrande, L.; et al. (June 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.

[aa493_3_1099-7] Schröder, C.; et al. (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]}

[aaa541-8] Maldonado, J.; et al. (May 2012), "Metallicity of solar-type stars with debris discs and planets", Astronomy and Astrophysics, 541: A40, arXiv:1202.5884, Bibcode:2012A&A...541A..40M, doi:10.1051/0004-6361/201218800, S2CID 46328823.

[apj714_2_1551-9] Heinze, A. N.; et al. (May 2010), "Constraints on Long-period Planets from an L'- and M-band Survey of Nearby Sun-like Stars: Observations", The Astrophysical Journal, 714 (2): 1551–1569, arXiv:1003.5340, Bibcode:2010ApJ...714.1551H, doi:10.1088/0004-637X/714/2/1551, S2CID 119199321.

[SIMBAD-10] "HD 133002". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-01-09.{{cite web}}: CS1 maint: postscript (link)

[skiff2014-11] Skiff, B. A. (2014). "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)". VizieR On-line Data Catalog: B/Mk. Originally Published in: Lowell Observatory (October 2014). 1. Bibcode:2014yCat....1.2023S.

[iau2005-12] Bikmaev, I.; et al. (2005), Hill, V.; François, P.; Primas, F. (eds.), "Chemical compositions of photometric solar-analog stars and F-G stars of different ages", From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution, IAU Symposium Proceedings of the international Astronomical Union 228, Held in Paris, France, May 23–27, 2005, vol. 1, Cambridge University Press, pp. 239–240, Bibcode:2005IAUS..228..239B, doi:10.1017/S1743921305005624.

[ar48_6_492-13] Galeev, A. I.; et al. (June 2004), "Chemical Composition of 15 Photometric Analogues of the Sun", Astronomy Reports, 48 (6): 492–510, Bibcode:2004ARep...48..492G, doi:10.1134/1.1767216, S2CID 119473855.

[csiro-14] "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2016-01-12.

[apj674_2_1086-15] Trilling, D. E.; et al. (February 2008), "Debris Disks around Sun-like Stars", The Astrophysical Journal, 674 (2): 1086–1105, arXiv:0710.5498, Bibcode:2008ApJ...674.1086T, doi:10.1086/525514, S2CID 54940779.

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HD 133002

References

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