Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Lepus |
Right ascension | 05h 51m 19.29613s [1] |
Declination | −20° 52′ 44.7232″ [1] |
Apparent magnitude (V) | 3.85 [2] |
Characteristics | |
Spectral type | K1 IV Fe−0.5 [3] or K0 IIIb Fe−1.5 CH0.5 [4] |
U−B color index | +0.71 [2] |
B−V color index | +0.98 [2] |
Astrometry | |
Radial velocity (Rv) | +100.20 [5] km/s |
Proper motion (μ) |
RA: +229.49
[1]
mas/
yr Dec.: −648.41 [1] mas/ yr |
Parallax (π) | 28.68 ± 0.17 mas [1] |
Distance | 113.7 ± 0.7
ly (34.9 ± 0.2 pc) |
Absolute magnitude (MV) | +1.04 [6] |
Details | |
Mass | 0.94 [6] M☉ |
Radius | 10 [7] R☉ |
Luminosity | 45.7 [6] L☉ |
Surface gravity (log g) | 2.46±0.23 [8] cgs |
Temperature | 4,660±84 [8] K |
Metallicity [Fe/H] | −0.74±0.09 [8] dex |
Rotational velocity (v sin i) | 0 [9] km/s |
Age | 10.7 [6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Delta Leporis (δ Leporis) is a solitary, [11] orange-hued star in the southern constellation of Lepus. It is visible to the naked eye with an apparent visual magnitude of 3.85. [2] Based upon an annual parallax shift of 28.68 mas, [1] it is 114 light years distant from Earth.
This is an old, evolved K-type star with an age of about 10.7 billion years. [6] Keenan and McNeil (1989) classified it as K0 IIIb Fe−1.5 CH0.5, [4] indicating it is a giant star showing a deficiency of iron and an excess of cyanogen in its atmosphere. However, Gray et al. (2006) listed it as K1 IV Fe−0.5, [3] which would suggest a less evolved subgiant star. It may be a red clump star, which indicates it is generating energy through helium fusion at its core. [12]
The measured angular diameter of this star, after correction for limb darkening, is 2.63±0.04 mas. [13] At the estimated distance of this star, this yields a physical size of about 10 times the radius of the Sun. [7] It has only 94% [6] of the Sun's mass and is radiating 46 [6] times the Sun's luminosity from its photosphere at an effective temperature of 4,660 K. [8]
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cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Lepus |
Right ascension | 05h 51m 19.29613s [1] |
Declination | −20° 52′ 44.7232″ [1] |
Apparent magnitude (V) | 3.85 [2] |
Characteristics | |
Spectral type | K1 IV Fe−0.5 [3] or K0 IIIb Fe−1.5 CH0.5 [4] |
U−B color index | +0.71 [2] |
B−V color index | +0.98 [2] |
Astrometry | |
Radial velocity (Rv) | +100.20 [5] km/s |
Proper motion (μ) |
RA: +229.49
[1]
mas/
yr Dec.: −648.41 [1] mas/ yr |
Parallax (π) | 28.68 ± 0.17 mas [1] |
Distance | 113.7 ± 0.7
ly (34.9 ± 0.2 pc) |
Absolute magnitude (MV) | +1.04 [6] |
Details | |
Mass | 0.94 [6] M☉ |
Radius | 10 [7] R☉ |
Luminosity | 45.7 [6] L☉ |
Surface gravity (log g) | 2.46±0.23 [8] cgs |
Temperature | 4,660±84 [8] K |
Metallicity [Fe/H] | −0.74±0.09 [8] dex |
Rotational velocity (v sin i) | 0 [9] km/s |
Age | 10.7 [6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Delta Leporis (δ Leporis) is a solitary, [11] orange-hued star in the southern constellation of Lepus. It is visible to the naked eye with an apparent visual magnitude of 3.85. [2] Based upon an annual parallax shift of 28.68 mas, [1] it is 114 light years distant from Earth.
This is an old, evolved K-type star with an age of about 10.7 billion years. [6] Keenan and McNeil (1989) classified it as K0 IIIb Fe−1.5 CH0.5, [4] indicating it is a giant star showing a deficiency of iron and an excess of cyanogen in its atmosphere. However, Gray et al. (2006) listed it as K1 IV Fe−0.5, [3] which would suggest a less evolved subgiant star. It may be a red clump star, which indicates it is generating energy through helium fusion at its core. [12]
The measured angular diameter of this star, after correction for limb darkening, is 2.63±0.04 mas. [13] At the estimated distance of this star, this yields a physical size of about 10 times the radius of the Sun. [7] It has only 94% [6] of the Sun's mass and is radiating 46 [6] times the Sun's luminosity from its photosphere at an effective temperature of 4,660 K. [8]
{{
cite web}}
: CS1 maint: postscript (
link)