Upsilon2 Cancri

Upsilon² Cancri is a yellow-hued star in the zodiac constellation of Cancer. Its name is a Bayer designation that is Latinized from υ² Cancri, and abbreviated Upsilon² Cnc or υ² Cnc. This star is near the lower brightness limit of stars that can be viewed with the naked eye, having an apparent visual magnitude of +6.35.^[2] Based upon an annual parallax shift of 5.1325 mas as seen from Earth's orbit,^[1] this system is approximately 621 light-years (190 pc) away. It is drifting further from the Sun with a line of sight velocity of +74 km/s.^[4] The position of this star near the ecliptic means it is subject to lunar occultation.^[8]

For other stars with this Bayer designation, see υ Cancri.

Upsilon² Cancri

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Cancer
Right ascension	08h 33m 00.104s[1]
Declination	+24° 05′ 05.26″[1]
Apparent magnitude (V)	+6.35[2]
Characteristics
Spectral type	G9 III[3]
U−B color index	+0.88[2]
B−V color index	+1.02[2]
Astrometry
Radial velocity (Rv)	+73.7±0.5[4] km/s
Proper motion (μ)	RA: −63.482 mas/yr[1] Dec.: −46.082 mas/yr[1]
Parallax (π)	5.251±0.025 mas[1]
Distance	621 ± 3 ly (190.4 ± 0.9 pc)
Absolute magnitude (MV)	+1.13[3]
Details
Mass	3.50±0.04[1] M☉
Radius	15.18+0.31 −0.27[1] R☉
Luminosity	110±1[1] L☉
Surface gravity (log g)	2.43±0.11[5] cgs
Temperature	4,881±44[5] K
Metallicity [Fe/H]	0.00±0.05[5] dex
Rotational velocity (v sin i)	2.7[6] km/s
Age	250+24 −23[1] Myr
Other designations
υ2 Cnc, 32 Cancri, BD+24°1946, HD 72324, HIP 41940, HR 3369, SAO 80245[7]
Database references
SIMBAD	data

At an age of 250 million years,^[1] this is an evolved G-type giant star with a stellar classification of G9 III.^[3] It has 3.5 times the mass of the Sun but has expanded to 15 times the Sun's radius.^[1] The star is radiating 110^[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,881 K.^[5] It is spinning with a projected rotational velocity of 2.7 km/s.^[6] Upsilon² Cancri is a member of the Epsilon Indi Moving Group of stars that share a common motion through space.^[3]