Epoch J2000.0 Equinox J2000.0
|Right ascension||19h 7m 18.1291s|
|Declination||+36° 6' 0.566"|
|Apparent magnitude (V)||5.249|
|U−B color index||-0.51|
|B−V color index||-0.11|
|Radial velocity (Rv)||-18 km/s|
|Proper motion (μ)||RA: -0.64 mas/yr
Dec.: -4.28 mas/yr
|Parallax (π)||3.92 ± 0.52 mas|
|Distance||approx. 800 ly
(approx. 260 pc)
Iota Lyrae (ι Lyr) is a 5th magnitude star in the constellation Lyra, approximately 800 light years away from Earth. It is a bluish white subgiant star of the spectral type B6IV. It therefore possesses a surface temperature of 11,000 to 25,000 kelvins and is larger, brighter, and at least twice as hot in surface temperature as our Sun. It is a B[e] star, meaning it shows prominent forbidden emission lines of hydrogen in its spectrum. It also rotates rapidly, at an uncertain 250 km/s.[not in citation given]
- "Simbad Query Result". Simbad. Retrieved October 15, 2007.
- "Iota Lyrae". The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991). Retrieved October 15, 2007.
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