Lambda2 Sculptoris

For other star systems with this Bayer designation, see λ Sculptoris.
Lambda2 Sculptoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sculptor
Right ascension 00h 44m 12.09871s[1]
Declination −38° 25′ 18.0704″[1]
Apparent magnitude (V) +5.90[2]
Characteristics
Spectral type K1 III[3]
B−V color index +1.15[2]
Astrometry
Radial velocity (Rv)+26.5[4] km/s
Proper motion (μ) RA: +246.29[1] mas/yr
Dec.: +120.53[1] mas/yr
Parallax (π)9.63 ± 0.40 mas[1]
Distance340 ± 10 ly
(104 ± 4 pc)
Absolute magnitude (MV)+0.82[5]
Details
Mass1.49[4] M☉
Radius14[6] R☉
Luminosity63[4] L☉
Temperature4,531±25[4] K
Metallicity [Fe/H]−0.04±0.05[5] dex
Age3.58[4] Gyr
Other designations
λ2 Scl, CD−39° 181, FK5 26, HD 4211, HIP 3456, HR 195, SAO 192703[7]
Database references
SIMBADdata

Lambda2 Sculptoris is an orange-hued star in the southern constellation of Sculptor. On dark nights it is faintly visible to the naked eye, having an apparent visual magnitude of +5.90.[2] Based upon an annual parallax shift of 9.63 mas as measured from Earth,[1] it is located roughly 340 light-years from the Sun. It has a relatively large proper motion, advancing 0.284±0.015 arcsecond per year across the sky.[8]

At an age of about 3.58[4] billion years, Lambda2 Sculptoris is an evolved red-clump[9] giant star with a stellar classification of K0 III.[3] It is presently on the horizontal branch and is generating energy through the nuclear fusion of helium at its core. The star has an estimated 1.49[4] times the mass of the Sun and has expanded to about 14[6] times the Sun's radius. It is radiating 63[4] times the solar luminosity from its photosphere at an effective temperature of 4,531 K.[4]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Evans1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  4. ^ a b c d e f g h i Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Wroblewski2001 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Liu2007 was invoked but never defined (see the help page).