69 Ceti

69 Ceti
Observation data; Equinox J2000.0]] (ICRS)
Constellation	Cetus
Right ascension	02h 21m 56.62838s
Declination	+00° 23′ 44.4288″
Apparent magnitude (V)	5.287
Characteristics
Spectral type	M1/2III
U−B color index	+1.85
B−V color index	+1.65
Astrometry
Radial velocity (Rv)	+26.99±0.32 km/s
Proper motion (μ)	RA: −12.393 mas/yr ; Dec.: −8.059 mas/yr
Parallax (π)	3.7821 ± 0.2323 mas
Distance	860 ± 50 ly ; (260 ± 20 pc)
Absolute magnitude (MV)	–2.73
Details
Radius	100+10; −18 R☉
Luminosity	1,813±126 L☉
Temperature	3,765+392; −177 K
Other designations
	69 Cet, BD−00°355, HD 14652, HIP 11021, HR 689, SAO 110495
Database references
SIMBAD	data

Short description: Star in the constellation Cetus

69 Ceti is a single^[7] star located around 860^[1] light years away in the equatorial constellation of Cetus. It is visible to the naked eye with an apparent visual magnitude of 5.3.^[2] This is an aging red giant star with a stellar classification of M1/2III.^[3] It is radiating 1,813 times the Sun's luminosity from an enlarged photosphere, 100 times the Sun's radius, at an effective temperature of 3,765 K.^[1]

References

↑ ^1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
↑ ^2.0 ^2.1 Høg, E. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. doi:10.1888/0333750888/2862. Bibcode: 2000A&A...355L..27H.
↑ ^3.0 ^3.1 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H.
↑ ^4.0 ^4.1 Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99. Bibcode: 1966CoLPL...4...99J.
↑ Ryon, Jenna; Shetrone, Matthew D.; Smith, Graeme H. (2009). "Comparing the CaiiH and K Emission Lines in Red Giant Stars". Publications of the Astronomical Society of the Pacific 121 (882): 842. doi:10.1086/605456. Bibcode: 2009PASP..121..842R.
↑ "69 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=69+Cet.
↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.

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Original source: https://en.wikipedia.org/wiki/69 Ceti. Read more

[GaiaDR2-1] 1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.

[TYC2-2] 2.0 ^2.1 Høg, E. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. doi:10.1888/0333750888/2862. Bibcode: 2000A&A...355L..27H.

[HD-3] 3.0 ^3.1 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H.

[UBVRI-4] 4.0 ^4.1 Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99. Bibcode: 1966CoLPL...4...99J.

[Ryon2009-5] Ryon, Jenna; Shetrone, Matthew D.; Smith, Graeme H. (2009). "Comparing the CaiiH and K Emission Lines in Red Giant Stars". Publications of the Astronomical Society of the Pacific 121 (882): 842. doi:10.1086/605456. Bibcode: 2009PASP..121..842R.

[SIMBAD-6] "69 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=69+Cet.

[Eggleton2008-7] Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.

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Observation data Equinox J2000.0]] (ICRS)
Constellation	Cetus
Right ascension	02^h 21^m 56.62838^s^[1]
Declination	+00° 23′ 44.4288″^[1]
Apparent magnitude (V)	5.287^[2]
Characteristics
Spectral type	M1/2III^[3]
U−B color index	+1.85^[4]
B−V color index	+1.65^[4]
Astrometry

Radial velocity (R_v)	+26.99±0.32^[1] km/s
Proper motion (μ)	RA: −12.393^[1] mas/yr Dec.: −8.059^[1] mas/yr
Parallax (π)	3.7821 ± 0.2323^[1] mas
Distance	860 ± 50 ly (260 ± 20 pc)
Absolute magnitude (M_V)	–2.73^[5]

Details

Radius	100+10 −18^[1] `R`_☉
Luminosity	1,813±126^[1] `L`_☉
Temperature	3,765+392 −177^[1] K

Other designations
69 Cet, BD−00°355, HD 14652, HIP 11021, HR 689, SAO 110495^[6]
Database references
SIMBAD	data

69 Ceti

Topic: Astronomy

References