Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 17h 21m 59.47633s [1] |
Declination | −67° 46′ 14.4072″ [1] |
Apparent magnitude (V) | +4.78 [2] |
Characteristics | |
Spectral type | K2 III [3] |
U−B color index | +1.27 [2] |
B−V color index | +1.21 [2] |
Astrometry | |
Radial velocity (Rv) | +12.6 [4] km/s |
Proper motion (μ) |
RA: –37.758
[5]
mas/
yr Dec.: –7.637 [5] mas/ yr |
Parallax (π) | 10.8625 ± 0.1512 mas [5] |
Distance | 300 ± 4
ly (92 ± 1 pc) |
Absolute magnitude (MV) | −0.04 [6] |
Details | |
Radius | 20 [7] R☉ |
Luminosity | 154 [6] L☉ |
Temperature | 4,388 [8] K |
Other designations | |
Database references | |
SIMBAD | data |
Zeta Apodis, Latinized from ζ Apodis, is the Bayer designation for a star in the southern constellation of Apus. It has an apparent visual magnitude of +4.78, [2] which is bright enough to allow it to be seen with the naked eye. The distance to this star is known from parallax measurements to be around 297 light-years (91 parsecs). [1]
The spectrum of Zeta Apodis matches a stellar classification of K2 III, [3] with the luminosity class of III indicating it is an evolved giant star. The measured angular diameter of this star, after correction for limb darkening, is 2.06 ± 0.02 mas. [10] At the estimated distance of Eta Draconis, [1] this yields a physical size of about 11 times the radius of the Sun. [7] The outer atmosphere has an effective temperature of 4,388 K, [8] which gives it the orange-hued glow of a K-type star. [11]
In Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system, 異雀 (Yì Què), meaning Exotic Bird, refers to an asterism consisting of ζ Apodis, ι Apodis, β Apodis, γ Apodis, δ Octantis, δ1 Apodis, η Apodis, α Apodis and ε Apodis. Consequently, ζ Apodis itself is known as 異雀一 (Yì Què yī, English: the First Star of Exotic Bird.) [12]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 17h 21m 59.47633s [1] |
Declination | −67° 46′ 14.4072″ [1] |
Apparent magnitude (V) | +4.78 [2] |
Characteristics | |
Spectral type | K2 III [3] |
U−B color index | +1.27 [2] |
B−V color index | +1.21 [2] |
Astrometry | |
Radial velocity (Rv) | +12.6 [4] km/s |
Proper motion (μ) |
RA: –37.758
[5]
mas/
yr Dec.: –7.637 [5] mas/ yr |
Parallax (π) | 10.8625 ± 0.1512 mas [5] |
Distance | 300 ± 4
ly (92 ± 1 pc) |
Absolute magnitude (MV) | −0.04 [6] |
Details | |
Radius | 20 [7] R☉ |
Luminosity | 154 [6] L☉ |
Temperature | 4,388 [8] K |
Other designations | |
Database references | |
SIMBAD | data |
Zeta Apodis, Latinized from ζ Apodis, is the Bayer designation for a star in the southern constellation of Apus. It has an apparent visual magnitude of +4.78, [2] which is bright enough to allow it to be seen with the naked eye. The distance to this star is known from parallax measurements to be around 297 light-years (91 parsecs). [1]
The spectrum of Zeta Apodis matches a stellar classification of K2 III, [3] with the luminosity class of III indicating it is an evolved giant star. The measured angular diameter of this star, after correction for limb darkening, is 2.06 ± 0.02 mas. [10] At the estimated distance of Eta Draconis, [1] this yields a physical size of about 11 times the radius of the Sun. [7] The outer atmosphere has an effective temperature of 4,388 K, [8] which gives it the orange-hued glow of a K-type star. [11]
In Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system, 異雀 (Yì Què), meaning Exotic Bird, refers to an asterism consisting of ζ Apodis, ι Apodis, β Apodis, γ Apodis, δ Octantis, δ1 Apodis, η Apodis, α Apodis and ε Apodis. Consequently, ζ Apodis itself is known as 異雀一 (Yì Què yī, English: the First Star of Exotic Bird.) [12]