HD 182475

Last updated
HD 182475
HD182475LightCurve.png
A visual band light curve for HD 182475, adapted from Poretti et al. (2003) [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Aquila [2]
Right ascension 19h 25m 01.53339s [3]
Declination −04° 53′ 04.3738″ [3]
Apparent magnitude  (V)6.51 [4]
Characteristics
Spectral type A9V [5]
U−B color index +0.09 [4]
B−V color index +0.33 [4]
Variable type δ Sct [6]
Astrometry
Proper motion (μ)RA: 36.65 [3] mas/yr
Dec.: 2.67 [3] mas/yr
Parallax (π)9.25±1.32  mas [3]
Distance approx. 350  ly
(approx. 110  pc)
Absolute magnitude  (MV)+1.38 [2]
Details
Luminosity 23 [7]   L☉
Temperature 6,907 [7]   K
Rotational velocity (v sin i)141 [5]  km/s
Other designations
V1691 Aql, BD−05°4964, HD 180555, HIP 95453, HR 7366, SAO 143373
Database references
SIMBAD data

HD 182475 is a Delta Scuti variable [6] star in the equatorial constellation of Aquila. Its apparent magnitude is 6.5, making it barely visible to the naked eye under ideal observing conditions. [4]

Gerald Hildebrandt discovered the star is a variable star in 1991, and reported the discovery in 1992. [8] It was given its variable star designation, V1691 Aquarii, in 2006. [9]

References

  1. ↑ Poretti, E.; Garrido, R.; Amado, P. J.; Uytterhoeven, K.; Handler, G.; Alonso, R.; Martín, S.; Aerts, C.; Catala, C.; Goupil, M. J.; Michel, E.; Mantegazza, L.; Mathias, P.; Pretorius, M. L.; Belmonte, J. A.; Claret, A.; Rodríguez, E.; Suarez, J. C.; Vuthela, F. F.; Weiss, W. W.; Ballereau, D.; Bouret, C.; Charpinet, S.; Hua, T.; Lüftinger, T.; Nesvacil, N.; Veer-Menneret, C. Van't (April 2003). "Preparing the COROT space mission: Incidence and characterisation of pulsation in the lower instability strip". Astronomy & Astrophysics. 406: 203–211. arXiv: astro-ph/0304422 . Bibcode:2003A&A...406..203P. doi: 10.1051/0004-6361:20030711 . Retrieved 23 October 2021.
  2. 1 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. XHIP record for this object at VizieR .
  3. 1 2 3 4 5 van Leeuwen, F. (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.
  4. 1 2 3 4 Cousins, A. W. J. (1964), "Photometric Data for Stars in the Equatorial Zone (Seventh List)", Monthly Notes of the Astronomical Society of Southern Africa, 23: 175, Bibcode:1964MNSSA..23..175C
  5. 1 2 Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv: astro-ph/0610785 , Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID   18475298
  6. 1 2 Rodríguez, E.; López-González, M. J.; López de Coca, P. (June 2000), "A revised catalogue of δ Sct stars", Astronomy and Astrophysics Supplement, 144 (3): 469–474, Bibcode:2000A&AS..144..469R, doi: 10.1051/aas:2000221 , hdl: 10261/226673
  7. 1 2 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
  8. ↑ Hildebrandt, G. (July 1992). "Rapid oscillations of five stars in the spectral range A and F. I". Astronomische Nachrichten. 313 (4): 233–241. Bibcode:1992AN....313..233H. doi:10.1002/asna.2113130404 . Retrieved 22 November 2024.
  9. ↑ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (August 2006). "The 78th Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 5721. Bibcode:2006IBVS.5721....1K . Retrieved 22 November 2024.
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