Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Capricornus |
Right ascension | 21h 08m 33.62529s [1] |
Declination | −21° 11′ 37.2177″ [1] |
Apparent magnitude (V) | +5.28 [2] |
Characteristics | |
Spectral type | A0 V [3] |
B−V color index | +0.01 [2] |
Astrometry | |
Proper motion (μ) |
RA: +19.83
[1]
mas/
yr Dec.: −60.15 [1] mas/ yr |
Parallax (π) | 18.14 ± 0.31 mas [1] |
Distance | 180 ± 3
ly (55.1 ± 0.9 pc) |
Absolute magnitude (MV) | +1.59 [4] |
Details [5] | |
Mass | 2.78 M☉ |
Luminosity | 21 [6] L☉ |
Surface gravity (log g) | 4.33±0.14 cgs |
Temperature | 10,878±370 K |
Metallicity [Fe/H] | −0.41±0.06 [7] dex |
Rotational velocity (v sin i) | 212 [3] km/s |
Age | 251 Myr |
Other designations | |
Database references | |
SIMBAD | data |
Chi Capricorni, Latinized from χ Capricorni, is a star in the southern constellation of Capricornus. Based upon an annual parallax shift of 18.14 mas as seen from the Earth, [1] the star is located about 180 light years from the Sun. It is visible to the naked eye with an apparent visual magnitude of +5.28. [2]
This is an A-type main sequence star with a stellar classification of A0 V. [3] It is a candidate Lambda Boötis star, showing a chemically peculiar spectrum with a low abundance of most elements heavier than oxygen. [7] The star is around 251 [5] million years old and is spinning rapidly with a projected rotational velocity of 212 [3] km/s. It has 2.78 [5] times the mass of the Sun and is radiating 21 [6] times the solar luminosity from its photosphere at an effective temperature of 10,878 K. [5]
At an angular separation of 1,199 [9] arcseconds lies a faint proper motion companion designated HIP 99550. At the estimated distance of Chi Capricorni, this is equal to a projected separation of 28,300 AU. [9] It has a visual magnitude of 10.94 [10] and a classification of M0 Vk, [11] indicating this is a red dwarf star. [9]
In Chinese, 十二國 (Shíer Guó), meaning Twelve States, refers to an asterism which is represent twelve ancient states in the Spring and Autumn period and the Warring States period, consisting of χ Capricorni, φ Capricorni, ι Capricorni, 38 Capricorni, 35 Capricorni, 36 Capricorni, θ Capricorni, 30 Capricorni, 33 Capricorni, ζ Capricorni, 19 Capricorni, 26 Capricorni, 27 Capricorni, 20 Capricorni, η Capricorni and 21 Capricorni. [12] Consequently, the Chinese name for χ Capricorni itself represents the state Qi (齊), [13] together with 112 Herculis in Left Wall of Heavenly Market Enclosure (asterism). [14]
R.H.Allen had opinion that χ Capricorni, together with φ Capricorni, were represent the state Wei (魏). [15]
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cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Capricornus |
Right ascension | 21h 08m 33.62529s [1] |
Declination | −21° 11′ 37.2177″ [1] |
Apparent magnitude (V) | +5.28 [2] |
Characteristics | |
Spectral type | A0 V [3] |
B−V color index | +0.01 [2] |
Astrometry | |
Proper motion (μ) |
RA: +19.83
[1]
mas/
yr Dec.: −60.15 [1] mas/ yr |
Parallax (π) | 18.14 ± 0.31 mas [1] |
Distance | 180 ± 3
ly (55.1 ± 0.9 pc) |
Absolute magnitude (MV) | +1.59 [4] |
Details [5] | |
Mass | 2.78 M☉ |
Luminosity | 21 [6] L☉ |
Surface gravity (log g) | 4.33±0.14 cgs |
Temperature | 10,878±370 K |
Metallicity [Fe/H] | −0.41±0.06 [7] dex |
Rotational velocity (v sin i) | 212 [3] km/s |
Age | 251 Myr |
Other designations | |
Database references | |
SIMBAD | data |
Chi Capricorni, Latinized from χ Capricorni, is a star in the southern constellation of Capricornus. Based upon an annual parallax shift of 18.14 mas as seen from the Earth, [1] the star is located about 180 light years from the Sun. It is visible to the naked eye with an apparent visual magnitude of +5.28. [2]
This is an A-type main sequence star with a stellar classification of A0 V. [3] It is a candidate Lambda Boötis star, showing a chemically peculiar spectrum with a low abundance of most elements heavier than oxygen. [7] The star is around 251 [5] million years old and is spinning rapidly with a projected rotational velocity of 212 [3] km/s. It has 2.78 [5] times the mass of the Sun and is radiating 21 [6] times the solar luminosity from its photosphere at an effective temperature of 10,878 K. [5]
At an angular separation of 1,199 [9] arcseconds lies a faint proper motion companion designated HIP 99550. At the estimated distance of Chi Capricorni, this is equal to a projected separation of 28,300 AU. [9] It has a visual magnitude of 10.94 [10] and a classification of M0 Vk, [11] indicating this is a red dwarf star. [9]
In Chinese, 十二國 (Shíer Guó), meaning Twelve States, refers to an asterism which is represent twelve ancient states in the Spring and Autumn period and the Warring States period, consisting of χ Capricorni, φ Capricorni, ι Capricorni, 38 Capricorni, 35 Capricorni, 36 Capricorni, θ Capricorni, 30 Capricorni, 33 Capricorni, ζ Capricorni, 19 Capricorni, 26 Capricorni, 27 Capricorni, 20 Capricorni, η Capricorni and 21 Capricorni. [12] Consequently, the Chinese name for χ Capricorni itself represents the state Qi (齊), [13] together with 112 Herculis in Left Wall of Heavenly Market Enclosure (asterism). [14]
R.H.Allen had opinion that χ Capricorni, together with φ Capricorni, were represent the state Wei (魏). [15]
{{
cite web}}
: CS1 maint: postscript (
link)