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| 17349+1234 | MCY 4 | alp Oph = Rasalhague. | |
| | MCY 4 | The companion has been detected by infrared speckle interferometry. | Mcy1983 |
| | MCY 4 | Kamper et al. derive a combined astrometric/spectroscopic solution. | Kpr1989 |
| | MCY 4 | Gatewood derives a weighted mean parallax of 68.12 ± 0.75 mas from | Gat2005 |
| | MCY 4 | MAP and previous results. Masses resulting from solution are 2.842 | |
| | MCY 4 | ± 0.194 and 0.778 ± 0.058 Msun; spectral types are A2V and K2V. | |
| | MCY 4 | This object was incorrectly identified as HD 159571 by Balega et al. | Bag1984b |
| | MCY 4 | 1999: Boccaletti et al. (2001) theta was flipped from 116.3 to 63.7, | Boc2001 |
| | MCY 4 | as noted by Gatewood (2005). | Gat2005 |
| | MCY 4 | Intensity Interferometer Limb-darkened diameter 1.63 ± 0.13 mas. | HBr1974 |
| | MCY 4 | NPOI Limb-darkened diameter 1.855 ± 0.012 mas, Sp = A4-7III, | NOI2018 |
| | MCY 4 | R = 2.97 ± 0.05 \rsun, Teff = 7627 ± 98 K, L = 26.9 ± 1.6 \lsun, | |
| | MCY 4 | M = 1.93 ± 0.03 \msun, Age = 0.91 ± 0.03 Gyr. | |
| | MCY 4 | Orbital elements by Hinkley et al. (2011) gives a mass ratio of | Hnk2011 |
| | MCY 4 | 2.76 +0.43/-0.27 and individual masses 2.40 +0.23/-0.37 and 0.85 | |
| | MCY 4 | +0.06/-0.04 Msun, assuming a parallax of 69.1 mas. | |
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