FF Aquilae

FF Aquilae
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 18h 58m 14.7474s
Declination +17° 21′ 39.283″
Apparent magnitude (V) 5.31
Characteristics
Spectral type F5Iab
U−B color index 0.43
B−V color index 0.8
Variable type Cepheid variable
Astrometry
Radial velocity (Rv) -22 km/s
Proper motion (μ) RA: 0.08 mas/yr
Dec.: -9.98 mas/yr
Parallax (π) 1.32 ± 0.72 mas
Distance approx. 2000 ly
(approx. 800 pc)
Absolute magnitude (MV) -4.1
Details
Mass 7 M
Radius 55 R
Luminosity 5000 L
Temperature 6640 K
Rotational velocity (v sin i) 17 km/s
Other designations
V* FF Aql, HD 176155, HIP 93124, BD+17° 3799, HR 7165, SAO 104296.
Database references
SIMBAD data

FF Aquilae (CHA 82Aa) is a classical cepheid variable (delta Cep type).

References

External links