HD 177406

Last updated
HD 177406
Telescopium constellation map.svg
Red circle.svg
Location of HD 177406 (circled)
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 19h 06m 55.60698s [1]
Declination −48° 17′ 56.9195″ [1]
Apparent magnitude  (V)5.95±0.01 [2]
Characteristics
Evolutionary stage main sequence star [1]
Spectral type A0 V [3]
U−B color index −0.02 [4]
B−V color index −0.01 [4]
Astrometry
Radial velocity (Rv)−6.2±1.6 [5]  km/s
Proper motion (μ)RA: +13.500  mas/yr [1]
Dec.: −12.738  mas/yr [1]
Parallax (π)8.8414 ± 0.0541  mas [1]
Distance 369 ± 2  ly
(113.1 ± 0.7  pc)
Absolute magnitude  (MV)+0.60 [6]
Details
Mass 2.64+0.43
−0.28 [7]   M☉
Radius 2.55±0.13 [8]   R☉
Luminosity 62.4+1.5
−1.4 [1]   L☉
Surface gravity (log g)4.00 [9]   cgs
Temperature 10,275+229
−194 [7]   K
Metallicity [Fe/H]0.00 [10]   dex
Rotation 27.2  d [11]
Rotational velocity (v sin i)50 - 100 [12]  km/s
Age 286±9 [13] [10]   Myr
Other designations
47 G. Telescopii [14] , CD−48°12901, CPD−48°10045, FK5  3523, GC  26272, HD  177406, HIP  93862, HR  7223, SAO  229493 [15]
Database references
SIMBAD data

HD 177406, also known as HR 7223 or rarely 47 G. Telescopii, is a solitary star [16] located in the southern constellation Telescopium. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.95. [2] Gaia DR3 parallax measurements imply a distance of 369 light years [1] and it is currently approaching the Solar System with a heliocentric radial velocity of −6.2  km/s . [5] At its current distance, HD 177406's brightness is diminished by 0.23 magnitudes due to interstellar dust [17] and it has an absolute magnitude of +0.60. [6]

HD 177406 has a stellar classification of A0 V, [3] indicating that it is an ordinary A-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.64 times the mass of the Sun [7] and a radius 2.55 times that of the Sun. [8] It radiates 62.4 times the luminosity of the Sun [1] from its photosphere at an effective temperature of 10,275  K . [7] It has a solar metallicity at [Fe/H] = +0.00 and it is estimated to be 286 million years old, [13] having completed 58.66% of its main sequence lifetime. [1]

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References

  1. 1 2 3 4 5 6 7 8 9 10 Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics . arXiv: 2208.00211 . doi: 10.1051/0004-6361/202243940 . Gaia DR3 record for this source at VizieR.
  2. 1 2 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. 1 2 Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars: Declinations −53° to −40°. Vol. 2. Bibcode:1978mcts.book.....H.
  4. 1 2 Alexander, J. B. (1972). "UBV observations of the RR Lyrae variable HD 176387 (MT Telescopii)". Royal Greenwich Observatory Bulletins. 174: 107. Bibcode:1972RGOB..174..107A.
  5. 1 2 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.
  6. 1 2 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.
  7. 1 2 3 4 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.
  8. 1 2 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.
  9. ↑ 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. 1 2 Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv: 1606.08814 . Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. eISSN   1562-6873. ISSN   1063-7737. S2CID   118345778.
  11. ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G.; Siverd, Robert J.; Lund, Michael B.; Kuhn, Rudolf B.; James, David; Gaudi, B. Scott (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal. 155 (1): 39. arXiv: 1711.03608 . Bibcode:2018AJ....155...39O. doi:10.3847/1538-3881/aa9bf4. S2CID   119515775.
  12. ↑ Andersen, J.; Nordstrom, B. (1983). "Radial velocities of bright southern stars. I - 139 B-type HR and FK stars". Astronomy and Astrophysics Supplement Series. 52: 471–482. Bibcode:1983A&AS...52..471A.
  13. 1 2 Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv: 1606.09028 . Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035. eISSN   1562-6873. ISSN   1063-7737. S2CID   255202762.
  14. ↑ 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.
  15. ↑ "HD 177406". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved April 30, 2023.
  16. ↑ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv: 0806.2878 . Bibcode:2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x . eISSN   1365-2966. ISSN   0035-8711. S2CID   14878976.
  17. ↑ 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.
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