64 Ceti

Last updated
64 Ceti
Observation data
Epoch J2000       Equinox J2000
Constellation Cetus
Right ascension 02h 11m 21.079s [1]
Declination +08° 34′ 11.31″ [1]
Apparent magnitude  (V)5.623±0.01 [1]
Characteristics
Evolutionary stage Subgiant [1]
Spectral type G0IV [1]
Apparent magnitude  (B)6.189 [1]
Apparent magnitude  (R)6.81 [1]
Apparent magnitude  (G)5.497 [1]
Apparent magnitude  (J)4.763 [1]
Apparent magnitude  (H)4.373 [1]
Apparent magnitude  (K)4.308 [1]
B−V color index 0.52 [2]
Astrometry
Radial velocity (Rv)-19.01±0.22 [3]  km/s
Proper motion (μ)RA: -141.042  mas/yr [3]
Dec.: -113.463  mas/yr [3]
Parallax (π)23.7901 ± 0.066  mas [3]
Distance 136.97  ly
(42.016  pc) [3]
Absolute magnitude  (MV)2.49 [4]
Details [2]
Mass 1.53±0.04  M☉
Radius 2.56±0.56  R☉
Luminosity 8.13 [lower-alpha 1]   L☉
Surface gravity (log g)3.81±0.09  cgs
Temperature 6066±42  K
Metallicity [Fe/H]0.14±0.04  dex
Rotation 15 days [lower-alpha 2]
Rotational velocity (v sin i)8.96±1.52 km/s
Age 2.63 [lower-alpha 3]   Gyr
Other designations
64 Ceti, Gaia DR2  2521857809546128896, Gaia DR3  2521857809546128896, HD  13421, HIP  10212, HR  635, SAO  110390, PPM  145360, LSPM J0211+0834, TIC  337046898, GSC  00630-01238, IRAS 02087+0820, WISE J021120.97+083410.1
Database references
SIMBAD data

64 Ceti is a star located located in the constellation Cetus. Based on its spectral type of G0IV, it is a G-type star that has left the main sequence and evolved into a subgiant. [1] It is located 42.02 parsecs (137.1 light-years) away, based on a parallax measured by Gaia DR3, and it is moving towards Earth at a velocity of 19 km/s. [3] The apparent magnitude of 64 Ceti is 5.62, [1] which makes it visible to the naked eye only in dark skies, far away from light pollution. [4]

Contents

Characteristics

64 Ceti is a G-type star that has left the main sequence and now evolved into a subgiant, based on its spectral type of G0IV. [1] It has about 1.53 times the Sun's mass and has expanded to 2.53 times the Sun's diameter. [2] It is emitting 8.13 times the solar luminosity from its photosphere at an effective temperature of 6,066 K. [2] The age of 64 Ceti is estimated at 2.63 billion years, about 58% of the Solar System's age, [lower-alpha 4] and it rotates under its axis at a speed of 8.96 km/s, translating into a rotation period of 15 days. [lower-alpha 2] [2] The B-V index of the star is 0.52, corresponding to a yellow-white hue of a late G/early F star. [2] [lower-alpha 5]

It is located in the constellation Cetus, based on its celestial coordinates. Gaia DR3 measured a parallax of 23.8 milliarcseconds for this star, translating into a distance of 42.02 parsecs (137.1 light-years ). [3] The apparent magnitude of 64 Ceti is 5.62, [1] which means that it is a faint star, visible to the naked eye only from locations with dark skies. [4] The absolute magnitude, i.e. its brightness if it was seen at a distance of 10 pc (32.6 ly), is 2.49. [4] The star is moving towards Earth at a velocity of 19 km/s. [3] It has a high proper motion across the sky [1] and belongs to the thin disk population, being located 31.03 parsecs (101.2 ly) above the galactic plane. [2]

Notes

    1. ↑ from a logarithm of 0.91
    2. 1 2 The rotational period is calculated using the star's circumference (π*diameter (km)) and later divided by the rotational period. The value will be divided by 86400 to convert from seconds to days.
    3. ↑ From a logarithm of 9.42.
    4. ↑ The Solar System has an age of 4.532 billion years.
    5. ↑ See the Color index article

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    References

    1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 "64 Ceti". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved May 7, 2024.
    2. 1 2 3 4 5 6 7 Deka-Szymankiewicz, B.; Niedzielski, A.; Adamczyk, M.; Adamów, M.; Nowak, G.; Wolszczan, A. (2018-07-01). "The Penn State - Toruń Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample". Astronomy and Astrophysics. 615: A31. arXiv: 1801.02899 . doi:10.1051/0004-6361/201731696. ISSN   0004-6361. Data about this star is available here at VizieR.
    3. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR .
    4. 1 2 3 4 "64 Ceti - Star in Cetus | TheSkyLive.com". theskylive.com. Retrieved 2024-05-07.
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