107 Piscium

From Infogalactic: the planetary knowledge core
Jump to: navigation, search
107 Piscium
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pisces
Right ascension 01h 42m 29.7619s[1]
Declination +20° 16′ 06.616″[1]
Apparent magnitude (V) 5.14 to 5.26[2]
Characteristics
Spectral type K1V[1]
U−B color index +0.49[3]
B−V color index +0.84[3]
V−R color index 0.5[1]
R−I color index +0.43[3]
Variable type Suspected[2]
Astrometry
Radial velocity (Rv) −33.5 ± 0.9[1] km/s
Proper motion (μ) RA: −302.14[1] mas/yr
Dec.: −677.46[1] mas/yr
Parallax (π) 133.92 ± 0.91[1] mas
Distance 24.4 ± 0.2 ly
(7.47 ± 0.05 pc)
Absolute magnitude (MV) 5.87[4]
Details
Mass 0.83 (0.80 to 0.89)[5] M☉
Radius 0.80 ± 0.06[6] R☉
Luminosity (bolometric) 0.46[4] L☉
Surface gravity (log g) 4.50[4] cgs
Temperature 5242 ± 3.2[7] K
Metallicity [Fe/H] −0.04[5] dex
Rotation 35.0 days[8]
Rotational velocity (v sin i) 1[5] km/s
Age 6.3[9] Gyr
Other designations
BD+19°279, CCDM J01425+2016A, GC 2080, GCTP 356, Gliese 68, Gliese 68.0, HD 10476, HIP 7981, HR 493, IDS 01371+1947 A, LFT 153, LHS 1287, LTT 10596, NLTT 5685, PPM 91014, SAO 74883, WDS 01425+2016A.[1][10]
Database references
SIMBAD data

107 Piscium (abbreviated 107 Psc) is a K-type main sequence star in the constellation of Pisces, about 24.4 light years away from the Earth.[1] 107 Piscium is the Flamsteed designation. It has an apparent visual magnitude which varies between 5.14 and 5.26.[2]

Naming

John Flamsteed numbered the stars of Pisces from 1 to 113, publishing his Catalogus Britannicus in 1725. He accidentally numbered 107 Piscium twice, as he also allocated it the designation of 2 Arietis.[11]

Properties

The star is somewhat older than the Sun—approximately 6 billion years old.[9] It has 83%[5] of the mass and 80%[6] of the radius of the Sun, but shines with only 46% of the Sun's luminosity.[4] The effective temperature of the star is 5,242 K.[7] It is rotating slowly with a period of 35.0 days.[8] The abundance of elements other than hydrogen and helium—the star's metallicity—is slightly lower than that of the Sun.[5]

107 Piscium has been examined for the presence of an infrared excess caused by exozodiacal dust, but none was detected.[12] The habitable zone for this star, defined as the locations where liquid water could be present on an Earth-like planet, is at a radius of 0.52–1.10 Astronomical Units (AU), where 1 AU is the average distance from the Earth to the Sun.[12]

In 1997, based on data collected during the Hipparcos mission, the star was categorized as an astrometric binary with a period of 0.576 years. However, this result has not been not confirmed.[13]

Visual companions

The star has two visual companions, WDS 01425+2016B and WDS 01425+2016C; C is optical.[14]

Multiple/double star designation: WDS 01425+2016[10]
Component Primary Right
ascension (α)
Equinox J2000.0		 Declination (δ)
Equinox J2000.0		 Epoch of
observed
separation		 Angular
distance
from
primary		 Position
angle
(relative
to primary)		 Apparent
magnitude
(V)		 Database
reference
B A 01h 42m 29.5s +20° 16′ 33″[15] 1910 19.0″ 248° 11.7 Simbad
C A 01h 42m 29.8s +20° 18′ 23″[16] 1924 104.4″ 353° 12.1 Simbad

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 NSV 600 -- Variable Star, database entry, SIMBAD. Accessed on line September 24, 2008.
  2. ↑ 2.0 2.1 2.2 NSV 600, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 24, 2008.
  3. ↑ 3.0 3.1 3.2 HR 493, 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 24, 2008.
  4. ↑ 4.0 4.1 4.2 4.3 HD 10476, catalog entry, Fundamental parameters and elemental abundances of 160 F-G-K stars based on OAO spectrum database, Y. Takeda, CDS ID J/PASJ/59/335; see also Publications of the Astronomical Society of Japan 59, #2 (April 2007), pp. 335–356, Bibcode: 2007PASJ...59..335T.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 HD 10476, database entry, The Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line November 19, 2008.
  6. ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ 9.0 9.1 Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ 10.0 10.1 Entry 01425+2016, The Washington Double Star Catalog, United States Naval Observatory. Accessed on line September 24, 2008.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ 12.0 12.1 Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ Entry 01425+2016, The Washington Double Star Catalog, notes, United States Naval Observatory. Accessed on line September 24, 2008.
  15. ↑ BD+19 279B -- Star in double system, database entry, SIMBAD. Accessed on line September 24, 2008.
  16. ↑ BD+19 279C -- Star in double system, database entry, SIMBAD. Accessed on line September 24, 2008.

External links

Retrieved from "https://infogalactic.com/w/index.php?title=107_Piscium&oldid=2092694"