Eta1 Doradus
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 06h 06m 09.3817s[1] |
| Declination | −66° 02′ 22.635″[1] |
| Apparent magnitude (V) | 5.697[1] |
| Characteristics | |
| Spectral type | A0V[1] |
| U−B color index | −0.07[2] |
| B−V color index | −0.03[2] |
| Astrometry | |
| Radial velocity (Rv) | 17.6 ± 5[1] km/s |
| Proper motion (μ) | RA: 13.51[1] mas/yr Dec.: 27.98[1] mas/yr |
| Parallax (π) | 9.82 ± 0.46[1] mas |
| Distance | 330 ± 20 ly (102 ± 5 pc) |
| Absolute magnitude (MV) | 0.7[3] |
| Details | |
| Surface gravity (log g) | 4.09 ± 0.08[4] cgs |
| Temperature | 10325 ± 240[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
Eta1 Doradus (Eta1 Dor, η1 Doradus, η1 Dor) is the Bayer designation for an A-type main sequence star in the constellation of Dorado, around 330 light-years from the Earth.[1] It has an apparent visual magnitude of approximately 5.697.[1] It has a radius of 3.1 solar radii, and a luminosity of 56 suns. This star will be observed to be circumpolar south of latitude 24°S.
η1 Doradus can be considered the south pole star of Venus, as it is the closest bright star to Venus's south celestial pole.
References
- 1 2 3 4 5 6 7 8 9 10 11 HD 42525 -- Star, database entry, SIMBAD. Accessed on line September 25, 2008.
- 1 2 HR 2194, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 25, 2008.
- ↑ From apparent magnitude and parallax.
- 1 2 Table 1, MARCS: Model Stellar Atmospheres and Their Application to the Photometric Calibration of the Spitzer Space Telescope Infrared Spectrograph (IRS), L. Decin, P. W. Morris, P. N. Appleton, V. Charmandaris, L. Armus, and J. R. Houck, Astrophysical Journal Supplement 154, #1 (September 2004), pp. 408–412, doi:10.1086/422884, Bibcode: 2004ApJS..154..408D.
- 2004. Starry Night Pro, Version 5.8.4. Imaginova. ISBN 978-0-07-333666-4. www.starrynight.com
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