Chi Sagittarii

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The Bayer designation Chi Sagittarii (χ Sgr / χ Sagittarii) is shared by three star systems in the constellation Sagittarius. The brightest of these, χ¹ Sagittarii and χ³ Sagittarii are separated by 0.56° on the sky. The dimmer χ² Sagittarii is located between them, 0.10° from χ¹.


[edit] χ¹ Sagittarii

χ¹ Sagittarii
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Sagittarius
Right ascension 19h 25m 16.5s
Declination -24° 30' 31"
Apparent magnitude (V) +5.02
Absolute magnitude (V) +0.86
Distance 221 ± 17 ly
(68 ± 5 pc)
Spectral type A4IV/V
Other designations
47 Sagittarii, HR 7362,
HD 182369, SAO 188101,
HIP 95477, CCDM 19253-2431

Chi-1 Sagittarii is a binary star. The primary is a spectral type A5 dwarf. The companion is approximately 0.12 arcseconds from the primary, putting it about 8 Astronomical Units away. The orbital period is 10.8 years. The combined apparent magnitude of the system is +5.02. It is approximately 220 light years from Earth.


[edit] χ² Sagittarii

χ² Sagittarii
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Sagittarius
Right ascension 19h 25m 22.3s
Declination -24° 24' 44"
Apparent magnitude (V) +7.27
Absolute magnitude (V) -0.57
Distance 1200 ± 500 ly
(370 ± 150 pc)
Spectral type B7IV
Other designations
48 Sagittarii, HD 182391,
HIP 95486

Chi-2 Sagittarii is a spectral type B7 subgiant which has an apparent magnitude of +7.26. It is approximately 1200 light years from Earth.


[edit] χ³ Sagittarii

χ³ Sagittarii
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Sagittarius
Right ascension 19h 25m 29.7s
Declination -23° 57' 44"
Apparent magnitude (V) +5.45
Absolute magnitude (V) -0.50
Distance 506 ± 81 ly
(155 ± 25 pc)
Spectral type K3III
Other designations
49 Sagittarii, HR 7363,
HD 182416, SAO 188105,
HIP 95503

Chi-3 Sagittarii is a spectral type K3 giant which has an apparent magnitude of +5.45. It is 506 light years from Earth.

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