HD 182475
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 25m 01.53339s[2] |
| Declination | −04° 53′ 04.3738″[2] |
| Apparent magnitude (V) | 6.51[3] |
| Characteristics | |
| Spectral type | A9V[4] |
| U−B color index | +0.09[3] |
| B−V color index | +0.33[3] |
| Variable type | δ Sct[5] |
| Astrometry | |
| Proper motion (μ) | RA: 36.65[2] mas/yr Dec.: 2.67[2] mas/yr |
| Parallax (π) | 9.25 ± 1.32 mas[2] |
| Distance | approx. 350 ly (approx. 110 pc) |
| Details | |
| Luminosity | 23[6] L☉ |
| Temperature | 6,907[6] K |
| Rotational velocity (v sin i) | 141[4] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 182475 is a Delta Scuti variable[5] 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.[3]
Gerald Hildebrandt discovered the star is a variable star in 1991, and reported the discovery in 1992.[7] It was given its variable star designation, V1691 Aquarii, in 2006.[8]
References
[edit]- ^ 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.
- ^ a b c d e 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.
- ^ a b c d 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
- ^ a b 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
- ^ a b 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
- ^ a b 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
- ^ Hildebrandt, G. (July 1992). "Rapid oscillations of five stars in the spectral range A and F. I". Astronomische Nachrichten. 313: 233–241. Bibcode:1992AN....313..233H. doi:10.1002/asna.2113130404. Retrieved 22 November 2024.
- ^ 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.
External links
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