TT Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 08m 13.75s[1] |
| Declination | +01° 17′ 55.15″[1] |
| Apparent magnitude (V) | 6.46-7.7[2] |
| Characteristics | |
| Spectral type | F6-G5[2] |
| B−V color index | 1.27 ± 0.02 |
| Variable type | Cepheid variable[1] |
| Astrometry | |
| Radial velocity (Rv) | 0 km/s |
| Proper motion (μ) | RA: -0.35 mas/yr Dec.: -4.47 mas/yr |
| Parallax (π) | 0.41 ± 0.96 mas |
| Distance | approx. 10,000 ly (approx. 2,000 pc) |
| Details | |
| Temperature | 6,000–7,500 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
TT Aquilae is a star in the constellation Aquila. A Cepheid variable, its apparent magnitude ranges from 6.46 to 7.7 over 13.7546 days.[2] It is a yellow-white supergiant that pulsates between spectral types F6 and G5.[2]
References
- ↑ 1.0 1.1 1.2 "TT Aquilae - Classical Cepheid (delta Cep type)". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 29 June 2014.
- ↑ 2.0 2.1 2.2 2.3 Watson, Christopher (4 January 2010). "TT Aquilae". AAVSO Website. American Association of Variable Star Observers. Retrieved 12 March 2014.
- HOWARD J. LANDIS (1975). "PHOTOELECTRIC LIGHT CURVES FOR T MONOCEROTIS AND TT AQUILAE" (PDF). Electronic Journal of the AAVSO 4: 84.
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