Phi Piscium

Starbox begin
name=Phi Piscium A/Bcite web
title=Simbad Query Result | work=Simbad
url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=*+85+Psc&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
accessdate=October 1
accessyear=2007] [cite web
title=Simbad Query Result | work=Simbad
url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=CCDM%20J01137%2B2435B
accessdate=October 1
accessyear=2007] Starbox observe
epoch=J2000.0
constell=Pisces
ra=01h 13m 44.9471s
dec=+24° 35' 01.367"
appmag_v=4.676 (A)/9.11 (B) Starbox character
class= K0III (A)/K0 (B)
b-v=+1.03 (A)/+0.92 (B)
u-b=+0.84 (A)/+0.25 (B) Starbox astrometry
radial_v=5.9
prop_mo_ra=18.58
prop_mo_dec=-21.26
parallax=8.64
p_error=0.81 |Starbox visbin
reference=cite journal | author=R.F. Griffin, G.H. Herbig | title=Spectroscopic binary orbits from photoelectric radial velocities. Paper 99: Phi PISCIUM | journal=The Observatory | year=1991 | volume=111 | pages=155–162 | url=http://articles.adsabs.harvard.edu/full/1991Obs...111..155G ] ^{, p. 160}
name=φ Psc B
period=7473 ± 3 days
eccentricity=0.815 ± 0.005
periarg=71.9 ± 1.7Starbox catalog
names=Phi Piscium, 85 Piscium, HR 360, BD+23°158, HD 7318, SAO 74571, HIP 5742, GC 1474

Phi Piscium (φ Psc) is a binary star system approximately 380 light years away in the constellation Pisces. It consists of Phi Piscium A, with a spectral type of K0III, and Phi Piscium B. Phi Piscium A possesses a surface temperature of 3,500 to 5,000 kelvins. Some suggest the only visible companion in the Phi Piscium B sub-system is a late F dwarf star, while others suggest it is a K0 star. The invisible component of the Phi Piscium B sub-system is proposed to have a spectral type of M2V. [cite journal | author=R.F. Griffin, G.H. Herbig | title=Spectroscopic binary orbits from photoelectric radial velocities. Paper 100: Phi PISCIUM B | journal=The Observatory | year=1991 | volume=111 | pages=201–219 | url=http://articles.adsabs.harvard.edu//full/1991Obs...111..201G/0000201.000.html ] The star system has a period of about 20 1/2 years and has a notably high eccentricity of 0.815.

References