Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
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Constellation | Serpens |
Right ascension | 18h 37m 35.9613s[1] |
Declination | −00° 18′ 34.100″[1] |
Apparent magnitude (V) | 5.74 to 5.86[2] |
Characteristics | |
Spectral type | A1V / A1V (spectroscopic binary)[3] |
U−B color index | +0.06[3] |
B−V color index | +0.07[3] |
R−I color index | +0.04[3] |
Astrometry | |
Radial velocity (Rv) | 11.4[3][4] km/s |
Proper motion (μ) | RA: 11.74[1] mas/yr Dec.: −19.83[1] mas/yr |
Parallax (π) | 5.06 ± 0.93[1] mas |
Distance | approx. 600 ly (approx. 200 pc) |
Absolute magnitude (MV) | −0.7[5] |
Other designations | |
Database references | |
SIMBAD | data |
The star e Serpentis (e Ser) is a spectroscopic binary in the constellation of Serpens. It consists of two A-type main sequence stars orbiting each other with a period of approximately 14.7 days.[3] The overall apparent visual magnitude of the system varies between 5.74 and 5.86.[2]
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