astro.wikisort.org - StarTau8 Serpentis, Latinized from τ8 Serpentis, is an A-type main sequence star in the constellation of Serpens, approximately 320 light-years from the Earth.[1] It has an apparent visual magnitude of approximately 6.144.[1] Although it was observed to be binary by speckle interferometry in 1985, subsequent observations show no sign of binarity, and the detection appears to have been spurious.[5]
Star in the constellation Serpens
Tau8 Serpentis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
Constellation |
Serpens |
Right ascension |
15h 44m 42.1323s[1] |
Declination |
+17° 15′ 51.197″[1] |
Apparent magnitude (V) |
6.144[1] |
Characteristics |
Spectral type |
A0V[1] |
U−B color index |
−0.03[2] |
B−V color index |
0.00[2] |
Astrometry |
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Radial velocity (Rv) | −5.2 ± 5[1] km/s |
Proper motion (μ) | RA: −30.44[1] mas/yr Dec.: 6.59[1] mas/yr |
Parallax (π) | 10.16 ± 0.79 mas[1] |
Distance | 320 ± 20 ly (98 ± 8 pc) |
Absolute magnitude (MV) | 0.88[3] |
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Details |
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Radius | 2.0[4] R☉ |
Rotational velocity (v sin i) | 76[2] km/s |
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Other designations |
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Database references |
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SIMBAD | data |
References
- * 26 Ser -- Star, database entry, SIMBAD. Accessed on line September 19, 2008.
- HR 5858, 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 19, 2008.
- 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, S2CID 119257644.
- HD 140729, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line September 19, 2008.
- ICCD speckle observations of binary stars. X - A further survey for duplicity among the bright stars, Harold A. McAlister, Brian D. Mason, William I. Hartkopf, and Michael M. Shara, Astronomical Journal 106, #4 (October 1993), pp. 1639–1655, doi:10.1086/116753, Bibcode:1993AJ....106.1639M.
Serpens constellation |
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Stars (list) | |
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Star clusters | |
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Molecular clouds | |
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Nebulae | |
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Galaxies | NGC |
- 5887
- 5910
- 5911
- 5913
- 5919
- 5920
- 5921
- 5926
- 5928
- 5931
- 5936
- 5937
- 5940
- 5942
- 5941
- 5944
- 5951
- 5953
- 5954
- 5952
- 5956
- 5955
- 5957
- 5960
- 5962
- 5964
- 5970
- 5972
- 5975
- 5977
- 5980
- 5983
- 5984
- 5988
- 5991
- 5990
- 5994
- 5996
- 5997
- 6003
- 6004
- 6008
- 6006
- 6007
- 6009
- 6012
- 6010
- 6014
- 6020
- 6017
- 6018
- 6021
- 6022
- 6023
- 6027
- 6027a
- 6027b
- 6027c
- 6027d
- 6027e
- 6029
- 6033
- 6037
- 6036
- 6051
- 6063
- 6065
- 6066
- 6070
- 6080
- 6100
- 6118
- 6172
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Other | |
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Galaxy clusters | |
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Other |
- GRB 970111
- GRB 050813
- GRB 060418
- GRB 060526
- SN 2004dk
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