107 Piscium, an orange dwarf star in Pisces
107 Piscium is an orange dwarf star in the constellation Pisces. At 24.5 light years away, it shines at an apparent visual magnitude of 5.24.
107 Piscium (HIP 7981)
107 Piscium is an orange dwarf star in the constellation Pisces. At 24.5 light years away, it shines at an apparent visual magnitude of 5.24. 107 Piscium is the primary component of a multiple-star system. The star's age is estimated to be 200 million years but is certainly no greater than 15 billion years. The iron abundance of 107 Piscium is -0.02 (95.5% of the Sun). It is moving through the Galaxy at a speed of 42.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 17,700 and 28,700 light years from the center of the Galaxy. It will come closest to the Sun 136,000 years from now when it will brighten to magnitude 4.18 from a distance of 15.1 light years.
Sky position: RA 1h 42.5m, Dec +20° 16.2'
Common designations: 107 Piscium, HIP 7981, HD 10476, Gliese 68
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Brightest stars in Pisces:
(list all)
| Rank | Mag. | Star |
| 23 | 4.95 | TX Piscium |
| 24 | 5.01 | TV Piscium |
| 25 | 5.05 | 7 Piscium |
| 26 | 5.07 | 64 Piscium |
| 27 | 5.13 | 29 Piscium |
| 28 | 5.13 | 89 Piscium |
| 29 | 5.15 | 82 Piscium |
| 30 | 5.21 | Zeta Piscium |
| 31 | 5.23 | 91 Piscium |
32
| 5.24
) 107 Piscium
| Rank | Mag. | Star |
| 33 | 5.33 | Psi-1 Piscium A |
| 34 | 5.35 | Rho Piscium |
| 35 | 5.36 | 55 Piscium |
| 36 | 5.36 | 57 Piscium |
| 37 | 5.38 | 41 Piscium |
| 38 | 5.38 | 52 Piscium |
| 39 | 5.42 | A Piscium |
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Galactic Orbit of 107 Piscium
(compared to the Sun)
E
ccentricity: 23.8% vs. 16.0%Angle φ : 113.0°vs. 26.0°
Semi-major axis : 7,118 pc vs. 8,686 pc
Semi-minor axis: 6,913 pc vs. 8,574 pc
Focus-to-center
: 1,696 pcvs. 1,388 pcSemilatus rectum : 6,714 pc vs. 8,464 pc
Perigalacticon: 5,422 pc vs. 7,297 pc
Apogalacticon
: 8,814 pcvs. 10,074 pcSome Tabulated XHIP Data for 107 Piscium
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 25.62479066° ±0.45 mas | -300.60 ±1.00 mas/yr. |
| Declination: | 20.27015048° ±0.34 mas | -673.70 ±0.90 mas/yr. |
| Galactic Longitude: | 138.87634240° | -114.63 mas/yr. |
| Galactic Latitude: | -41.01535610° | -728.76 mas/yr. |
Parallax: 132.76 ± 0.50 mas
Spectrography
Spectral Type: K1V 2006AJ....132..161G.
Radial Velocity: -33.78 ±0.08 km/s [A rating] 2002ApJS..141..503N, 1992A&A...256..121T, 2005ApJS..159..141V.
Iron Abundance [Fe/H]:
-0.02 dex
2011A&A...525A..71W, 2009A&A...501..941H, 2008A&A...480...91S, 2007A&A...465..271R, 2006ApJ...652.1604B, 2006AJ....131.3069L, 2005PASJ...57...27T, 2005ApJS..161..444T, 2005ApJS..159..141V, 2005AJ....129.1063L, 2004A&A...420..183A, 2004A&A...418..551M, 2003AJ....126.2015H.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 6.08 | 6.69 |
| V | 5.24 | 5.86 |
| R | 4.70 | 5.32 |
| I | 4.30 | 4.92 |
| J | 3.86 | 4.47 |
| H | 3.39 | 4.01 |
| K | 3.29 | 3.90 |
B-V: +0.84 V-I: +0.94
Derivations
Heliocentric distance: 7.53 pc (0.4% margin of error)
Galactocentric distance: 7,404 pc
Transverse velocity: 26.3 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -4.3 pc | 3.7 pc | -4.9 pc |
| Velocity (U, V, W) | 34.8 km/s | -24.9 km/s | 2.5 km/s |