Chi Sagittarii

Chi Sagittarii

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. The Wow! signal came from the direction of these stars.

χ¹ Sagittarii

χ¹ Sagittarii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation 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.


χ² Sagittarii

χ² Sagittarii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation 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.


χ³ Sagittarii

χ³ Sagittarii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation 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.

v · Sagittarius
Bayer
α (Rukbat) • β¹ (Arkab Prior) • β² (Arkab Posterior) • γ¹ • γ² (Alnasl) • δ (Kaus Media) • ε (Kaus Australis) • ζ (Ascella) • η • θ¹ • θ² • ι • κ¹ • κ² • λ (Kaus Borealis) • μ (Polis) • ν¹ (Ain al Rami) • ν² • ξ¹ • ξ² • ο • π (Albaldah) • ρ¹ • ρ² • σ (Nunki) • τ • υ • φ (Nanto) • χ¹ • χ² • χ³ • ψ • ω • b¹ • c • d • e¹ • e² • f • g • h¹ • h² • A
Flamsteed
3 • 4 • 6 • 7 • 9 • 10 (γ², Alnasl) • 11 • 13 (μ, Polis) • 14 • 15 • 16 • 17 • 18 • 19 (δ, Kaus Media) • 20 (ε, Kaus Australis) • 21 • 22 (λ, Kaus Borealis) • 24 • 25 • 26 • 27 (φ, Nanto) • 28 • 29 • 30 • 32 (ν¹, Ain al Rami) • 33 • 34 (σ, Nunki) • 35 (ν²) •36 (ξ¹) • 37 (ξ²) • 38 (ζ, Ascella) • 39 (ο) • 40 (τ) • 41 (π, Albaldah) • 42 (ψ) • 43 (d) • 44 (ρ¹) • 45 (ρ²) • 46 (υ) • 47 (χ¹) • 48 (χ²) • 49 (χ³) • 50 • 51 (h¹) • 52 (h²) • 53 • 54 (e¹) • 55 (e²) • 56 (f) • 57 • 58 (ω) • 59 (b¹) • 60 (A) • 61 (g) • 62 (c) • 63 • 65 • 63 Oph
Nearby
Ross 154 • Gliese 783 • Gliese 745
Other
VX • KW • Peony Star • Pistol Star • QPM-241 • S2 • LBV 1806-20


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