Xi Sagittarii

Starbox short
name=ξ¹ Sagittarii
epoch=J2000.0
constell=Sagittarius
ra=18^h 57^m 20.5^s
dec=-20° 39' 23"
spectral=B9.5Ib
appmag_v=+5.02
dist_ly=> 2300
dist_pc=> 700
names=36 Sagittarii, HR 7145,
HD 175687, SAO 187498,
HIP 93057The 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. The star ξ² Sagittarii in particular carries the proper name Nergal, which is the name of an Assyrian or Babylonian deity that was portrayed within parts of Sagittarius.

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.

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.

ξ² Sagittarii

Starbox short
name=ξ² Sagittarii
epoch=J2000.0
constell=Sagittarius
ra=18^h 57^m 43.8^s
dec=-21° 06' 24"
spectral=G8/K0II/III
appmag_v=+3.52
dist_ly=372 ± 42
dist_pc=114 ± 13
names=Nergal, 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.

References

*
*