HD 173780

HD 173780^[1]
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Lyra
Right ascension	18h 46m 04.4803s
Declination	+26° 39' 43.667"
Apparent magnitude (V)	4.833
Characteristics
Spectral type	K3III
U−B color index	+1.22
B−V color index	+1.20
Astrometry

Radial velocity (R_v)	-16.7 km/s
Proper motion (μ)	RA: 18.68 mas/yr Dec.: 24.39 mas/yr
Parallax (π)	12.96 ± 0.54 mas
Distance	250 ± 10 ly (77 ± 3 pc)

Other designations
HD 173780, HR 7064, BD+26°3349, SAO 86418, HIP 92088, GC 25721, GSC 02116-02764

HD 173780 is a 5th magnitude star in the constellation Lyra, approximately 250 light years away from Earth. It is an orange giant star of the spectral type K3III, meaning it has a surface temperature of 3,500 to 5,000 kelvins. It is much bigger and brighter than our Sun, yet cooler.^[1]

References

1 2 "Simbad Query Result". Simbad. Retrieved October 15, 2007.

Stars of Lyra

Bayer	α (Vega) β (Sheliak) γ (Sulafat) δ¹ δ² ε^{1, 2} (Double Double) ζ¹ ζ² η (Aladfar) θ ι κ λ μ (Alathfar) ν¹ ν²

Flamsteed	16 17 19

Variable	R (13) S T V W RR RV RZ TT TZ UZ XY AY CC CN CY DM EP EZ FL HK HP HR KX MV V344 V361 V404 V473 V477 V478 V533 V542 V543 V545 V550 V558

HR	6845 6847 6853 6901 6968 6984 6997 7016 7017 7019 7030 7033 7041 7043 7044 7064 7073 7081 7112 7115 7118 7132 7140 7146 7162 7181 7202 7204 7212 7237 7238 7244 7253 7272 7280 7284 7302 7338 7345 7346 7359 7376 7382

HD	177830 180314 181068

Gliese	Gliese 758 GJ 4063

Kepler	7 8 9 14 19 20 24 25 26 30 37 38 46 53 55 59 60 62 65 75 83 88 91 92 93 94 95 98 100 102 103 104 105 109 128 130 131 138 177 238 277 279 282 350 410 444

Other	GSC 02634-01087 GSC 02652-01324 2MASS 1835+3259 WASP-3 WASP-58 WISE 1828+2650

List

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