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HD 193002
Location of HD 193002 (circled)
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Telescopium
Right ascension 20h 20m 32.31401s [1]
Declination −55° 03′ 03.1837″ [1]
Apparent magnitude (V) 6.26±0.01 [2]
Characteristics
Evolutionary stage AGB [3]
Spectral type M0/1 III [4]
U−B color index +2.01 [5]
B−V color index +1.59 [5]
Variable type suspected [6]
Astrometry
Radial velocity (Rv)−9.1±0.4 [7] km/s
Proper motion (μ) RA: +9.106  mas/ yr [1]
Dec.: −33.290  mas/ yr [1]
Parallax (π)3.1785 ± 0.0411  mas [1]
Distance1,030 ± 10  ly
(315 ± 4  pc)
Absolute magnitude (MV)−0.93 [8]
Details
Mass1.08 [9]  M☉
Radius84.5±4.3 [10]  R☉
Luminosity711 [11]  L☉
Surface gravity (log g)0.87 [9]  cgs
Temperature3,972±122 [12]  K
Metallicity [Fe/H]+0.07 [9]  dex
Other designations
85 G. Telescopii [13], NSV 25094, CPD−55°9365, FK5 3626, GC 28241, HD 193002, HIP 100300, HR 7758, SAO 246535 [14]
Database references
SIMBAD data

HD 193002 (HR 7758; NSV 25094) is a solitary red hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.26, [2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively far at a distance of 1,030 light years based on Gaia DR3 parallax measurements, [1] but it is approaching the Solar System with a heliocentric radial velocity of −9.1  km/s. [7] At its current distance, HD 193002's brightness is diminished by 0.17 magnitudes due to interstellar dust [15] and it has an absolute magnitude of −0.93. [8]

A light curve for HD 193002, plotted from Hipparcos data [16]

HD 193002 has a stellar classification of M0/1 III, [4] indicating that it is an evolved red giant with the characteristics of an M0 and M1 giant star. It is currently on the asymptotic giant branch, [3] generating fusion via hydrogen and helium shells around an inert carbon core. It has a comparable mass to the Sun [9] but it has expanded to 84.5 times the radius of the Sun. [10] It radiates 711 times the luminosity of the Sun [11] from its enlarged photosphere at an effective temperature of 3,972  K. [12] HD 193002 is slightly metal enriched with an iron abundance 118% that of the Sun's or [Fe/H] = +0.07. [9]

HD 193002 was first suspected to be variable in 1997 by the Hipparcos satellite. [17] It fluctuates between 6.34 and 6.39 in the Hipparcos passband. [6]

References

  1. ^ a b c d e 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.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN  0004-6361. S2CID  17128864.
  3. ^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal. 104: 275. Bibcode: 1992AJ....104..275E. doi: 10.1086/116239. ISSN  0004-6256. S2CID  121672252.
  4. ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars: Declinations −90° to −53°. Vol. 1. Bibcode: 1975mcts.book.....H.
  5. ^ a b Oja, T. (1970). "UBV-Fotometri danska Tel (ESO)". Private Communication: 0. Bibcode: 1970Priv.........0O.
  6. ^ a b Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode: 2017ARep...61...80S. doi: 10.1134/S1063772917010085. eISSN  1562-6881. ISSN  1063-7729. S2CID  125853869.
  7. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. eISSN  1562-6873. ISSN  1063-7737. S2CID  119231169.
  8. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN  1562-6873. ISSN  1063-7737. S2CID  119257644.
  9. ^ a b c d e Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv: 1904.11302. Bibcode: 2019A&A...628A..94A. doi: 10.1051/0004-6361/201935765. eISSN  1432-0746. ISSN  0004-6361. S2CID  131780028.
  10. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv: astro-ph/0404180. Bibcode: 2004A&A...426..297K. doi: 10.1051/0004-6361:20035930. eISSN  1432-0746. ISSN  0004-6361. S2CID  6077801.
  11. ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". 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. eISSN  1365-2966. ISSN  0035-8711. S2CID  118665352.
  12. ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694. Bibcode: 2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467. eISSN  1538-3881. hdl: 1721.1/124721. S2CID  166227927.
  13. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
  14. ^ "HD 193002". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 24, 2023.
  15. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv: 1709.01160. Bibcode: 2017MNRAS.472.3805G. doi: 10.1093/mnras/stx2219. eISSN  1365-2966. ISSN  0035-8711. S2CID  118879856.
  16. ^ EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series. 1200. Noordwijk, Netherlands: ESA Publications Division. Bibcode: 1997ESASP1200.....E. ISBN  9290923997. Retrieved 15 October 2022.
  17. ^ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; van Leeuwen, F. (July 1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics. 323: L49–L52. Bibcode: 1997A&A...323L..49P. ISSN  0004-6361.
Retrieved from " https://en.wikipedia.org/?title=HD_193002&oldid=1154746672"
From Wikipedia, the free encyclopedia
HD 193002
Location of HD 193002 (circled)
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Telescopium
Right ascension 20h 20m 32.31401s [1]
Declination −55° 03′ 03.1837″ [1]
Apparent magnitude (V) 6.26±0.01 [2]
Characteristics
Evolutionary stage AGB [3]
Spectral type M0/1 III [4]
U−B color index +2.01 [5]
B−V color index +1.59 [5]
Variable type suspected [6]
Astrometry
Radial velocity (Rv)−9.1±0.4 [7] km/s
Proper motion (μ) RA: +9.106  mas/ yr [1]
Dec.: −33.290  mas/ yr [1]
Parallax (π)3.1785 ± 0.0411  mas [1]
Distance1,030 ± 10  ly
(315 ± 4  pc)
Absolute magnitude (MV)−0.93 [8]
Details
Mass1.08 [9]  M☉
Radius84.5±4.3 [10]  R☉
Luminosity711 [11]  L☉
Surface gravity (log g)0.87 [9]  cgs
Temperature3,972±122 [12]  K
Metallicity [Fe/H]+0.07 [9]  dex
Other designations
85 G. Telescopii [13], NSV 25094, CPD−55°9365, FK5 3626, GC 28241, HD 193002, HIP 100300, HR 7758, SAO 246535 [14]
Database references
SIMBAD data

HD 193002 (HR 7758; NSV 25094) is a solitary red hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.26, [2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively far at a distance of 1,030 light years based on Gaia DR3 parallax measurements, [1] but it is approaching the Solar System with a heliocentric radial velocity of −9.1  km/s. [7] At its current distance, HD 193002's brightness is diminished by 0.17 magnitudes due to interstellar dust [15] and it has an absolute magnitude of −0.93. [8]

A light curve for HD 193002, plotted from Hipparcos data [16]

HD 193002 has a stellar classification of M0/1 III, [4] indicating that it is an evolved red giant with the characteristics of an M0 and M1 giant star. It is currently on the asymptotic giant branch, [3] generating fusion via hydrogen and helium shells around an inert carbon core. It has a comparable mass to the Sun [9] but it has expanded to 84.5 times the radius of the Sun. [10] It radiates 711 times the luminosity of the Sun [11] from its enlarged photosphere at an effective temperature of 3,972  K. [12] HD 193002 is slightly metal enriched with an iron abundance 118% that of the Sun's or [Fe/H] = +0.07. [9]

HD 193002 was first suspected to be variable in 1997 by the Hipparcos satellite. [17] It fluctuates between 6.34 and 6.39 in the Hipparcos passband. [6]

References

  1. ^ a b c d e 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.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN  0004-6361. S2CID  17128864.
  3. ^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal. 104: 275. Bibcode: 1992AJ....104..275E. doi: 10.1086/116239. ISSN  0004-6256. S2CID  121672252.
  4. ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars: Declinations −90° to −53°. Vol. 1. Bibcode: 1975mcts.book.....H.
  5. ^ a b Oja, T. (1970). "UBV-Fotometri danska Tel (ESO)". Private Communication: 0. Bibcode: 1970Priv.........0O.
  6. ^ a b Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode: 2017ARep...61...80S. doi: 10.1134/S1063772917010085. eISSN  1562-6881. ISSN  1063-7729. S2CID  125853869.
  7. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. eISSN  1562-6873. ISSN  1063-7737. S2CID  119231169.
  8. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN  1562-6873. ISSN  1063-7737. S2CID  119257644.
  9. ^ a b c d e Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv: 1904.11302. Bibcode: 2019A&A...628A..94A. doi: 10.1051/0004-6361/201935765. eISSN  1432-0746. ISSN  0004-6361. S2CID  131780028.
  10. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv: astro-ph/0404180. Bibcode: 2004A&A...426..297K. doi: 10.1051/0004-6361:20035930. eISSN  1432-0746. ISSN  0004-6361. S2CID  6077801.
  11. ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". 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. eISSN  1365-2966. ISSN  0035-8711. S2CID  118665352.
  12. ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694. Bibcode: 2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467. eISSN  1538-3881. hdl: 1721.1/124721. S2CID  166227927.
  13. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
  14. ^ "HD 193002". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 24, 2023.
  15. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv: 1709.01160. Bibcode: 2017MNRAS.472.3805G. doi: 10.1093/mnras/stx2219. eISSN  1365-2966. ISSN  0035-8711. S2CID  118879856.
  16. ^ EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series. 1200. Noordwijk, Netherlands: ESA Publications Division. Bibcode: 1997ESASP1200.....E. ISBN  9290923997. Retrieved 15 October 2022.
  17. ^ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; van Leeuwen, F. (July 1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics. 323: L49–L52. Bibcode: 1997A&A...323L..49P. ISSN  0004-6361.
Retrieved from " https://en.wikipedia.org/?title=HD_193002&oldid=1154746672"

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