Delta Sagittae

Delta Sagittae
Location of δ Sagittae (circled)


Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Sagitta
Right ascension	19^h 47^m 23.27^s
Declination	+18° 32' 03.3"
Apparent magnitude (V)	+3.68
Distance	448 ly (137 pc)
Spectral type	M2II + B6
Other designations
δ Sagittae, δ Sge, Delta Sge, 7 Sagittae, BD+18 4240, CCDM J19474+1832AB, FK5 743, GC 27391, HD 187076, HIP 97365, HR 7536, IDS 19429+1817 AB, PPM 136976, SAO 105259, WDS J19474+1832AB

Delta Sagittae (Delta Sge, δ Sagittae, δ Sge) is a multiple star system in the constellation of Sagitta, with an apparent magnitude of +3.68. The primary component is a red M-type bright giant. It is approximately 448 light years from Earth.

Delta Sagittae is moving through the Galaxy at a speed of 9.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 35,300 light years from the center of the Galaxy.^[1]

Naming

In Chinese, 左旗 (Zuǒ Qí), meaning Left Flag, refers to an asterism consisting of δ Sagittae, α Sagittae, β Sagittae, ζ Sagittae, γ Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and ρ Aquilae. Consequently, δ Sagittae itself is known as 左旗三 (Zuǒ Qí sān, English: the Third Star of Left Flag.)^[2]

References

Stars of Sagitta

Bayer	α (Sham) β γ δ ε ζ η θ

Flamsteed	1 2 3 9 10 11 13 15 18

Variable	R S U V RZ SV UU WY WZ FG GY HM HT QT QW QY V338 V340 V344

HR	7198 7216 7260 7299 7662 7713 7780

HD	180377 187282 231701

Other	Black Widow Pulsar HAT-P-34 PSR B1944+17 WR 124

List

This article is issued from Wikipedia - version of the 5/19/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.