Theta Doradus

Theta Doradus
Diagram showing star positions and boundaries of the Dorado constellation and its surroundings


Location of θ Doradus (circled)

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado
Right ascension 05h 13m 45.43s
Declination −67° 11' 07.3"
Apparent magnitude (V) +4.81
Distance546 ly
(167 pc)
Spectral typeK2III
Other designations
θ Doradus, θ Dor, Theta Dor, CPD−67  401, FK5 196, GC 6444, HD 34649, HIP 24372, HR 1744, PPM 354621, SAO 249225.

Theta Doradus (Theta Dor, θ Doradus, θ Dor) is an orange K-type giant with an apparent magnitude of +4.81. It is approximately 546 light years from Earth.

Theta Doradus is moving through the Galaxy at a speed of 31.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,400 and 24,800 light years from the center of the Galaxy.[1]

Naming

In Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system, 夾白 (Jiá Bái), meaning White Patches Attached, refers to an asterism consisting of θ Doradus and α Reticuli. Consequently, θ Doradus itself is known as 夾白一 (Jiá Bái yī, English: the First Star of White Patches Attached.)[2]

References

  1. ↑ Theta Doradus (HIP 24372)
  2. ↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 27 日