Omicron Aquilae

ο Aquilae

Observation data Epoch J2000      Equinox J2000
Constellation	Aquila
Right ascension	19h 51m 01.6427s
Declination	+10° 24′ 56.617″
Apparent magnitude (V)	5.1
Characteristics
Spectral type	F8V
U−B color index	0.07
B−V color index	0.55
R−I color index	0.29
Astrometry
Radial velocity (Rv)	-0.2 km/s
Proper motion (μ)	RA: 240.09 mas/yr Dec.: -134.51 mas/yr
Parallax (π)	51.57 ± 0.77 mas
Distance	63.2 ± 0.9 ly (19.4 ± 0.3 pc)
Absolute magnitude (MV)	5.66
Details
Mass	1.7 M☉
Radius	1.4 R☉
Luminosity	6 L☉
Temperature	6,000–7,500 K
Rotational velocity (v sin i)	< 6 km/s
Other designations
54 Aquilae, O Aquilae, NLTT 48319, LTT 15798, GJ 768.1 HD 187691, SAO 105338, BD+10 4073, HIP 97675, HR 7560.
Database references
SIMBAD	data
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

Omicron Aquilae (ο Aql, ο Aquilae) or O Aquilae is a binary star in the constellation Aquila. It is approximately 63.2 light years from Earth.

The primary component, ο Aquilae A, is a yellow-white F-type main sequence dwarf with an apparent magnitude of +5.12. Its companion, ο Aquilae C, is a 14th magnitude star, 22.5 arcseconds from the primary. A third nearby star, ο Aquilae B, is an optical companion.

In 1998, Omicron Aquilae was one of nine stars to be found out to have a superflare.^[1]

References

1. ^ »… In 1998, nine Sol-type stars (naked-eye objects Omicron Aquilae, Kappa Ceti, and Pi1 Ursae Majoris, as well as MQ/5 Serpentis, UU Coronae Borealis, S Fornacis, MT Tauri, BD+10 2783, and Groombridge 1830) were observed to have produced super flares, on average, about once per century. …«

References

• HR 7560
• CCDM 19510+1025
• Image Omicron Aquilae