HD 11025

HD 11025
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Octans
Right ascension 01h 37m 28.036s[1]
Declination −84° 46′ 10.62″[1]
Apparent magnitude (V) 5.67±0.01[2]
Characteristics
Spectral type G8 III[3]
U−B color index +0.66[4]
B−V color index +0.94[4]
Astrometry
Radial velocity (Rv)18±2[5] km/s
Proper motion (μ) RA: +34.227 mas/yr[1]
Dec.: +26.193 mas/yr[1]
Parallax (π)8.6392 ± 0.1495 mas[1]
Distance378 ± 7 ly
(116 ± 2 pc)
Absolute magnitude (MV)+0.33[6]
Details[7]
Mass2.61±0.13 M☉
Radius9.52±0.24 R☉
Luminosity56±2 L☉
Surface gravity (log g)2.96±0.08 cgs
Temperature5,128±46 K
Metallicity [Fe/H]0.00±0.04 dex
Rotational velocity (v sin i)7.5±1[8] km/s
Age500[9] Myr
Other designations
4 G. Octantis, CPD−85°17, FK5 916, GC 2092, HD 11025, HIP 7568, HR 525, SAO 258273
Database references
SIMBADdata

HD 11025 (HR 525) is a suspected astrometric binary[10] in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.67,[2] making it visible to the naked eye if viewed under ideal conditions. Located 378 light years away,[1] it is receding with a heliocentric radial velocity of 18 km/s.[5]

The visible component is a yellow giant of spectral class G8 III.[3] At present it has 2.61 times the mass of the Sun[7] but at an age of 500 million years,[9] has expanded to 9.52 times the radius of the Sun.[7] It shines at 56 L☉ from its enlarged photosphere at an effective temperature of 5,128 K,[7] giving it a yellow glow. HD 11025 has a solar metallicity[7] and spins with a moderate projected rotational velocity of 7.5 km/s.[8]

  1. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Ottoni2022 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference DeMederios2014 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Dermarque2004 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggelton2008 was invoked but never defined (see the help page).