Delta Sculptoris

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δ Sculptoris
Sculptor constellation map.svg
Red circle.svg
Location of δ Sculptoris (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Sculptor
Right ascension 23h 48m 55.54658s [1]
Declination −28° 07 48.9745 [1]
Apparent magnitude  (V)4.57 [2]
Characteristics
Spectral type A0Vp(Lam Boo)n [3]
U−B color index -0.03 [2]
B−V color index +0.01 [2]
Astrometry
Radial velocity (Rv)+8.70 [4]  km/s
Proper motion (μ)RA: +100.80 [1]   mas/yr
Dec.: -105.34 [1]   mas/yr
Parallax (π)23.73 ± 0.22  mas [1]
Distance 137 ± 1  ly
(42.1 ± 0.4  pc)
Absolute magnitude  (MV)1.47 [5]
Details
Mass 2.27 [6]   M
Radius 1.8 [7]   R
Luminosity 29 [6]   L
Surface gravity (log g)4.34 [8]   cgs
Temperature 9,750 [6]   K
Rotational velocity (v sin i)299 [6]  km/s
Other designations
ADS  17021, CCDM  J23489-2808AB, CD-28°18353, FK5  896, GC  33050, GSC  06988-01337, HD  223340/223352, HIP  117452, HR  9016, SAO  192167, WDS  J23489-2808AB
Database references
SIMBAD data

Delta Sculptoris (δ Scl, δ Sculptoris) is a triple star system [9] in the constellation Sculptor. It is approximately 137.4 light years from Earth. [1]

The primary component, Delta Sculptoris A, is a white A-type main sequence dwarf [3] with an apparent magnitude of +4.59. It has a faint, 11.6 magnitude companion, Delta Sculptoris B, 4 arcseconds, or more than 175 astronomical units, away from it. Orbiting this pair at the much greater separation of 74 arcseconds, is the yellow G-type Delta Sculptoris C, which has an apparent magnitude of +9.4. [9] [10]

This system is a candidate member of the AB Doradus moving group, an association of stars with similar ages that share a common heading through space. [11]


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References

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