7 Aquilae
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 18h 51m 05.41169s[1] |
| Declination | –03° 15′ 40.01079″[1] |
| Apparent magnitude (V) | 6.88[2] |
| Characteristics | |
| Spectral type | A2[2] |
| Variable type | δ Sct[3] |
| Astrometry | |
| Radial velocity (Rv) | –29[4] km/s |
| Proper motion (μ) | RA: –47.13[1] mas/yr Dec.: –59.85[1] mas/yr |
| Parallax (π) | 8.87 ± 0.45[1]mas |
| Distance | 370 ± 20 ly (113 ± 6 pc) |
| Details | |
| Mass | 2[3]M☉ |
| Luminosity | 24[3]L☉ |
| Temperature | 7,400[3]K |
| Other designations | |
7 Aquilae (7 Aql) is the Flamsteed designation for a star in the equatorial constellation of Aquila. Its apparent magnitude is 6.8[2] and it is at a distance of about 370 light-years (110 parsecs) from Earth.[1] This is a pulsating variable star of the Delta Scuti type.[3]
References
- ^ a b c d e f van Leeuwen, F. (November 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.
- ^ a b c d "7 Aql -- Variable Star of delta Sct type", SIMBAD (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-25.
- ^ a b c d e Fox Machado, L. et al. (August 2007), "Multisite Observations of δ Scuti Stars 7 Aql and 8 Aql (a New δ Scuti Variable): The Twelfth STEPHI Campaign in 2003", The Astronomical Journal 134 (2): 860–866, arXiv:0706.0576, Bibcode:2007AJ....134..860F, doi:10.1086/520062.
- ^ Wilson, Ralph Elmer (1953), General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, Bibcode:1953QB901.W495......
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