Eta Cancri
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cancer |
Right ascension | 08h 32m 42.49600s [1] |
Declination | 20° 26′ 28.1865″ [1] |
Apparent magnitude (V) | 5.34 [2] |
Characteristics | |
Spectral type | K3III [2] |
B−V color index | +1.26 [2] |
Astrometry | |
Radial velocity (Rv) | +22.46[3] km/s |
Proper motion (μ) | RA: -46.33[1] mas/yr Dec.: -44.31[1] mas/yr |
Parallax (π) | 10.93 ± 0.40[1] mas |
Distance | 300 ± 10 ly (91 ± 3 pc) |
Absolute magnitude (MV) | 0.54 [4] |
Other designations | |
Database references | |
SIMBAD | data |
Eta Cancri (η Cnc, η Cancri) is a class K3III[2] (orange giant) star in the constellation Cancer. Its apparent magnitude is 5.34[2] and it is approximately 298 light years away based on parallax.[1]
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- 1 2 3 4 5 6 "Eta Cancri". SIMBAD Astronomical Database. Retrieved 2015-10-07.
- ↑ Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430 (1): 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272
- ↑ Absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
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