Xi Sagittarii

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ξ¹ Sagittarii

Observation data Epoch J2000.0
Constellation	Sagittarius
Right ascension	18h 57m 20.5s
Declination	-20° 39' 23"
Apparent magnitude (V)	+5.02
Distance	> 2300 ly (> 700 pc)
Spectral type	B9.5Ib
Other designations
36 Sagittarii, HR 7145, HD 175687, SAO 187498, HIP 93057

The Bayer designation Xi Sagittarii (ξ Sgr / ξ Sagittarii) is shared by two stars, ξ¹ Sagittarii and ξ² Sagittarii, in the constellation Sagittarius. The two stars are separated by 0.46° on the sky.

Because they are close to the ecliptic, these stars can be occulted by the Moon and very rarely by planets. The last occultation of ξ² Sagittarii by a planet took place on 22 December 1810, when it was occulted by Venus.

[edit] ξ¹ Sagittarii

Xi-1 Sagittarii is a spectral type B9.5 supergiant which has an apparent magnitude of +5.08. It is at least 2300 light years from Earth.

[edit] ξ² Sagittarii

ξ² Sagittarii

Observation data Epoch J2000.0
Constellation	Sagittarius
Right ascension	18h 57m 43.8s
Declination	-21° 06' 24"
Apparent magnitude (V)	+3.52
Distance	372 ± 42 ly (114 ± 13 pc)
Spectral type	G8/K0II/III
Other designations
37 Sagittarii, HR 7150, HD 175775, SAO 187504, HIP 93085

Xi-2 Sagittarii is a spectral type G8 or K0 giant which has an apparent magnitude of +3.52. It is 372 light years from Earth.