E Ophiuchi

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e Ophiuchi
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Ophiuchus [1]
Right ascension 17h 18m 37.0s [2]
Declination +10° 51′ 52″ [2]
Apparent magnitude  (V)5.03 [3]
Characteristics
Spectral type K4II-III [3]
U−B color index 1.89 [3]
B−V color index 1.55 [3]
R−I color index 0.83[ citation needed ]
Astrometry
Absolute magnitude  (MV)−0.86 [1]
Other designations
e Oph, 66 Her, BD+11 3156, SAO 102725, HD 156681, HR 6433 [2]
Database references
SIMBAD data

e Ophiuchi (HD 156681) is a star in the constellation Ophiuchus near the border with Hercules, which it had been mistakenly catalogued 66 Herculis. [4] It has an apparent magnitude of 5.03.

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 "e Ophiuchi". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-10-05.
  3. 1 2 3 4 "VizieR Detailed Page". Archived from the original on 2016-03-05. Retrieved 2012-07-13.
  4. ↑ Wagman, M. (August 1987), "Flamsteed's Missing Stars", Journal for the History of Astronomy , 18 (3): 209–223, Bibcode:1987JHA....18..209W, doi:10.1177/002182868701800305, S2CID   118445625.


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