Epsilon Sculptoris

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ε Sculptoris
Location of ε Sculptoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Sculptor[1]
Right ascension 01h 45m 38.75712s[2]
Declination −25° 03′ 09.4022″[2]
Apparent magnitude (V) 5.29[1]
Characteristics
A
Evolutionary stage main sequence[3]
Spectral type F2V[4]
U−B color index +0.01[5]
B−V color index +0.40[5]
B
Evolutionary stage main sequence[6]
Spectral type G9V[7]
Astrometry
Radial velocity (Rv)+13.10[8] km/s
Absolute magnitude (MV)+3.05[1]
A
Proper motion (μ) RA: +165.847[3] mas/yr
Dec.: −49.654[3] mas/yr
Parallax (π)35.6418±0.0719 mas[3]
Distance91.5 ± 0.2 ly
(28.06 ± 0.06 pc)
B
Proper motion (μ) RA: +138.593[9] mas/yr
Dec.: −44.200[9] mas/yr
Parallax (π)35.7514±0.0313 mas[9]
Distance91.23 ± 0.08 ly
(27.97 ± 0.02 pc)
Orbit[10]
Period (P)2,198.3 yr
Semi-major axis (a)17.06″
Eccentricity (e)0.857
Inclination (i)105.3°
Details
ε Scl A
Mass1.44[11] M☉
Radius1.5[12] R☉
Luminosity5.07[1] L☉
Surface gravity (log g)4.24[13] cgs
Temperature6,809[13] K
Metallicity [Fe/H]−0.02[1] dex
Rotational velocity (v sin i)86[14] km/s
Age1.6[3] Gyr
ε Scl B
Mass0.84[11] M☉
Radius0.74[15] R☉
Luminosity0.30[15] L☉
Surface gravity (log g)4.62[15] cgs
Temperature4,973[15] K
Other designations
ADS 1394, CCDM J01456-2504AB, CD−25°704, FK5 61, GC 2145, HD 10830, HIP 8209, HR 514, SAO 167275, WDS J01456-2503AB
Database references
SIMBADdata

Epsilon Sculptoris (ε Scl, ε Sculptoris) is a binary star[16] in the constellation Sculptor. It is 91 light years from Earth and has a combined apparent magnitude of +5.29.

The primary component, Epsilon Sculptoris A, is a yellow-white F-type main-sequence star[4] with an apparent magnitude of +5.34.[17] Orbiting it with a separation of 4.6 arcseconds, or at least 125 astronomical units, is Epsilon Sculptoris B, a yellow G-type main sequence dwarf with an apparent magnitude of +8.50.[18] A and B make one orbit around their centre of mass once every 1200 years.[19]

There are two optical companions, the 15th magnitude designated Epsilon Sculptoris C at an angular separation of 15 arcseconds and the 11th magnitude Epsilon Sculptoris D, at a separation of 142 arcseconds.[20] Both these faint stars have small Gaia parallaxes indicating a much greater distance than the Epsilon Sculptoris pair.[21]

This star will be in constellation Fornax around 2920 CE.[22]

References

[edit | edit source]
  1. ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). XHIP record for this object at VizieR.
  2. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  3. ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
  4. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  5. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).Vizier catalog entry
  6. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  7. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  8. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  9. ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
  10. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  11. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  12. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  13. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  14. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  15. ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  16. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  17. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  18. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  19. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  20. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
  21. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.</ref name=dr3d>Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
  22. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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