Delta Doradus

Delta Doradus

Observation data Epoch 2000.0      Equinox 2000.0
Constellation	Dorado
Right ascension	05h 44m 46.42s
Declination	−65° 44′ 07.9″
Apparent magnitude (V)	4.34
Characteristics
Spectral type	A7V
U−B color index	0.12
B−V color index	0.21
Astrometry
Radial velocity (Rv)	-3 km/s
Proper motion (μ)	RA: -28.38 mas/yr Dec.: 6.12 mas/yr
Parallax (π)	22.48 ± 0.46 mas
Distance	145 ± 3 ly (44.5 ± 0.9 pc)
Absolute magnitude (MV)	1.10
Details
Mass	1.35 M☉
Other designations
HIP 27100, CPD-65° 496, HR 2015, FK5 1154, SAO 249346, HD 39014.
Database references
SIMBAD	data

δ Doradus is a faint star in the Dorado constellation that becomes the Moon's south pole star once every 18.6 years. The pole star status changes periodically, because of the precession of the Moon's rotational axis.

When δ Doradus is the pole star, it is better aligned than Earth's Polaris (α Ursae Minoris), but much fainter.

See also

• Large Magellanic Cloud

External links

• http://server6.wikisky.org/starview?object_type=1&object_id=951&object_name=%CE%B4+Dor&locale=EN