Notes on individual systems Abbreviations: SB - spectroscopic binary (SB1, SB2 - single and double-lined), VB - visual binary, EB - eclipsing binary, CPM - common-proper-motion pair, PMS - pre-Main Sequence ----------------------------------------------------------------------- 00134+2659 = HR 40. VB (368y G0III) and SB (6d G7V) at 18". 00247-2709 = GJ 2005, visual quadruple composed of M5-dwarfs, 0.27" and 0.05" at 1.07" from each other. Short estimated periods, but no orbits yet. 00316-6258 = HR 126+127+125, Beta Tuc. 6 components. The inner quadruple contains 2 VBs (2.4" B9V and 44.7y A2V) at 27". The distant pair at 544" is itself a 0.1" VB with a short, but yet unknown period. 00345-0433 = HIP 2713. VB (1.9" G8II) and SB1 (81d G0V) at 19.5". 00364-4908 = HIP 2888 = GJ 24AB. Two SBs (3.7d G3V and 22d K0V) at 329", CPM. 01078+4651 = HIP 5303. Two SBs (1551d K0III and 4.6d F7V) at 8.8". 01137+2435 = HR 360 = Phi Psc. Two SBs (20.4y K0III and 2d K0V) at 7.9". 01157-6852 = HR 377 = Kap Tuc. Two VBs (857y F6IV and 86y K2V) at 318". The sub-systems are counter-rotating, not co-planar. 01256+3133 = HIP 6668. Visual triple made of the close pair AB (4.5", F9V) and a C-component at 57" which is a 15d SB2 twin. 01409+4953 = HIP 7841. VB (92y K0V) and SB (2.2d K0V) at 6". 01413+2545 = HR 484. Two SBs (4.4d F2V and 1.4d K4V) at 10.6". Aab can have an unseen tertiary because its orbit is precessing. 02084+2819 = HIP 9971, two SBs (208d K0 and 88d G5) at 20.7", metal-poor. The G5V secondary is fainter and bluer than the K0 primary, its mass of 0.71M_sun is assumed to match the dwarf luminosity of the K0V component. 02124+3018 = HR 642 = 6 Tri. Two twin SB2s (14.7d G5III and 2.2d F6V) at 3.8". The Aab has an interferometric orbit, its masses are estimated from Hipparcos parallax. B is 1.25mag above the MS, young? 02470-0952 = HD 17386, two VBs (0.3" F6V and 0.7" F8V) at 21". 03368+0035 = HR 1099, two SBs (2.8d G5IV and 1152d K6V) at 8". 04078+6220 = HR 1260. The visual component B (O9.5V) is a quadruple composed of the eclipsing binary SZ Cam (2.7d) and another 2.8-d SB at 0.06". The component A at 17.9" is itself a 10-d binary, the whole system belongs to the cluster NGC 1502. 04226+2538 = HR 1369B = Chi Tau. The visual secondary is a tight quadruple composed of SB2 (17.6d G0V) and a close pair of K4V dwarfs with yet unknown period, which we assume to be 10d here. Only the mass sum of this pair is known, so equal masses of 0.7 M_sun and a provisional period 10d are adopted. The viausl primary A at 19.4" may itself be a close binary. 04325+1731 = GG Tau, PMS quadruple (0.26" K6V and 0.93" M5 at 10.3"). A 196-y orbit is computed for the bright pair AB. 04327+2553 = UZ Tau is a PMS quadruple (VB 0.37" M3 and SB 19d M1.5 at 3.5"). 04356+1010 = HR 1458 = 88 Tau. Six components. The inner quadruple is a 18y VB composed of two SB2s (3.6d A6Vm and 7.9d G2V). The distant component B at 70" it itself a 1350d SB1. 04518+1339 = HIP 22607. The outer system is a 95y VB, with two SB2s (144d F5V and 497d K1V) as components. Member of the Hyades. The estimated inclinations of Aab and Bab are 49 and 32 deg, the inclinantion of the visual orbit is 51deg. 05017+2640 = HIP 23395. VB (25y, F7V) and SB (186d, G5V) at 78". 05078+3024 = HIP 23873 = RW Aur. PMS quadruple composed of an SB (2.8d, G5Ve) and a VB (0.12") at 1.4". Strong accretion and outflow. 05079+0830 = HR 1664. Two VBs (200y A5m and 2.8") forming a wide CPM pair at 343". An SB sub-system in A is suspected, ibut gnored here. 05098+2802 = HR 1670. SB (33d, A5m) and VB (32y, dG7) at 11.6". 05168+4559 = HR 1708, Capella. The 104d visual-interferometric pair of giants and a 388y VB of M-dwarfs at 723" from each other. 05239-0052 = HR 1782. SB (22.6d F%V) and VB (48y F8V) at 2.7". 05287-6527 = HIP 25647. 17.6-yr astrometric binary Aab and 0.06" pair of M-dwarfs Bab at 9". 05293+2509 = HR 1821 = 118 Tau. Two VBs (1.8" B8.5V and 1" A2?) at 4.7", discovered in 2005 with adaptive optics. 05320-0018 = HR 1852 = Delta Ori. A VB (0.26" O9II, where primary is a 5.7d SB) and another 26d SB (B2V) at 52". 05331-0143 = HR 1863. Two visual pairs AB (1.6" B4V) and CD (0.7" B8) at 29.4". The spectroscopic sub-system in A is ignored, no orbit yet. 06003-3103 = HIP 28442 = GJ 225.2. Quadruple composed of two VBs (67.7y K5V and 24y K5V) at 4" from each other. Likely old and metal-poor. 06024+0939 = HR 2124 = Mu Ori. A 18.8y VB where each component is an SB (4.4d A2V and 4.8d F3V). A member of Hyades?? 06298-5014 = HR 2384. Two VBs (53y F2V and 101y K-dwarfs) at 12". The two pairs counter-rotate, not coplanar. 06504-3142 = HR 2545. SB (28.6d B6V) and VB (0.6" A3) at 43". 06580+0218 = HIP 33513. Two SBs (6.8d A7V and 4.5d F5V) in a tight 0.9" VB. 07184-5721 = HIP 35374. Two VBs (0.26" G0V and 0.3" M1V?) at 2.4". This is a perplexing case: while the faint BC binary was discovered by Rossitter as early as 1930, the apparently easier system Aab was not seen, revealed only by Hipparcos. 07346+3153 = HR 2891 = Alpha Gem. The inner quadruple is a 445y VB composed of two SB1s (9.2d A1V and 2.9d A2Vm). The faint companion C at 72" is a 0.8d EB YY Gem composed of twin M0V dwarfs. 08119-4844 = HD 68826 = AO Vel. Eclipsing pair (1.6d B9p) and SB2 (4.1d A0?) in a 41-yr orbit around each other. 08211+4725 = HIP 40925. Two VBs (1.7" F7V and 280y G7V) at 39". 08263-3904 = HR 3327 = NO Pup. EB (1.26d B9V) and VB (0.1" A3V) at 8.1". 08269+3212 = HD 71149. SB1 (1496d G4) and VB (123y K2) at 108". 08285-0231 = HR 3337. VB (55y) composed of two SBs (2.5d A5m and 6d A5m). Estimated inclinations of the SBs are 86 and 45 deg, the inclination of the visual orbit is 84 deg. There is also a faint CPM component at 18". 08468+0625 = HR 3482 = Eps Hya. Pairs AB (15y G5III) and Cab (9.9d dF7) compose a 990-y VB, with an additional distant companion at 19". 08592+4803 = HR 3569 = Iot UMa. VB (817y) composed of an SB (11y A7V) and another VB (BC, 39.7y dM1). The outer and inner pairs counter-rotate. 09123+1459 = HR 3650 = Pi Cnc. VB (984d G9V) and a 0.53" pair of L8 brown dwarfs at 43", CPM. 10017+1725 = HIP 49136 = XY Leo. Two SBs (0.28d K0V and 0.80d M1V) in a 19.6-y orbit around each other. 10444-6000 = HIP 52526 = QZ Car. Two SBs (20.7d O9I and 6d O9V) orbiting each other with P=50y. Belongs to the cluster Collinder 228. 11029+3025 = HIP 54003 = VW LMi. Two SBs (0.48d F3V and 7.9d G2V?) on a 355-d orbit, the shortest outer period known for a quadruple. Estimated inclinations of the SBs and the outer orbit are 90 and 39 deg, 57 deg. respectively. T.Pribulla (priv. comm.) found a CPM companion, HD 95606=HIP 53969 at 340". It is not clear if this companion is bound. 11037+6145 = HR 4301 = Alp UMa. VB (44.5y K0III) and SB1 (6.0d F8) at 280". The SB1 can have additional distant companion, as inferred from the precession of its orbit. 11182+3131 = HR 4375 = Xi UMa. Aab (1.83y G0V) and Bab (4d G5V) on a 60-y outer orbit. The orbits of Aab and AB are close to coplanarity. A close visual companion to B was discovered by speckle, but it is ruled out by further observations and the long-term radial velocity coverage of Bab which follows the outer orbit without any perturbations. 11221-2447 = HIP 55505 = HD 98800. A young quadruple consisting of two SBs (Aab 262d K4V and Bab 315d K7V?) on a 354y preliminary visual orbit. The SB2 pair Bab was resolved interferometrically, it has a massive circum-binary disk. 11395-6524 = HR 4492 = GT Mus. SB1 (61d G2III) and EB (56d A0V) in a 0.22" VB with yet unknown orbit. The mass of the secondary in the eclipsing system is not known. 11480+2014 = HR 4527 = 93 Leo. SB2 resolved interferometrically (71.7d A7V) and SB1 (110y G5V) at 74", CPM. 12413-1301 = HR 4822 = VV Crv. Two SBs (44.4d F5V and 1.5d F3V) at 5.3" from each other, with a 5th component at 58.5". 13240+5456 = HR 5054 = Zet UMa. Two SBs (20.5d A1Vp and 176d A7m) at 14.4", with a 5th companion at 709". 13461+0507 = HIP 67186 = HT Vir. SB1(32d F8V) and EB (0.4d G0V) in 261y VB orbit with inclination 43deg. 13532-3156 = HR 5221 = 4 Cen. Two SB1s (6.9d B4IV) and (4.8d A3Vm) at 14.9". 14182-2731 = HIP 69894. Two VBs (0.7" F7V and 0.4") at 3". 14593+4649 = HIP 73346 = ET Boo. EB (0.65d F7V) and SB2 (31.5d G5V?) on a 67y VB orbit with inclination 67deg. The estimated inclination of Bab is 58deg. 15118+6151 = HIP 74370. Two similar EBs BV and BW Dra (0.35d F9V and 0.29d G3V) at 16". 15122-1948 = HR 5652 = Iot Lib. Two VBs (23.5y A0p) and (1.9" G8V?) at 57.8", CPM. 15245+3722 = HR 5733 = Mu Boo. Two VBs (3.8y F1V and 257y G0V) at 109". The orbits of the VBs are approximately co-planar. 15420+0027 = HIP 76892. Two SBs (10.9d A5m and 15.8d A5m) on a 54y VB orbit. 15440+2220 = HIP 77045. EB (15.9d F8) and SB1 (13.6d F8) in a 0.4" VB. 16058+1041 = HIP 78864 = NQ Ser. Two SBs (4.3d G8IV EB and 11d K2V?) in a 0.23" VB, with a faint CPM companion at 226" 16368+6948 = HIP 81332. Two VBs (206y F5 and 0.6" F0) in a wide 147" CPM pair. 17116+3915 = HIP 84100. Two VBs (0.4" F8 and 1.2" F8?) at 15", CPM. 17146+1424 = HR 6406 = Alp Her. Close VB (Aab, 0.2" M5I) and SB1 (51.6d G5III) at 4.7". The mass of Ab is unknown, 7.5 M_sun assumed. A premature 3600y outer orbit is computed. 17465+2744 = HR 6623. Astrometric binary (65y G5IV) and VB (43y M3) at 34". The two inner orbits appear co-planar. 18002+8000 = HR 6810 = 41+40 Dra. Two SB2s (Aab 1246d F7V and Bab 10.5d F7V) at 19" from each other. The Aab system has high eccentricity e=0.9754, its visual orbit is known, it is not co-planar with the outer orbit. 18240+5848 = HR 6923 = 39 Dra. The VB (6.6" A1V) and SB1 (2.7d F8V) are at 89" distance, CPM. 18443+3938 = HR 7051 = Eps Lyr. Two VBs (AB 1804y A4V and CD 585y A8Vn) at 209" from each other. The inner orbits appear co-planar, but their elements are still poorly defined owing to the long periods. Tge component C was resolved interferometrically into a 0.19" pair, but the reality of this sub-system is questionable. 18455+0530 = HR 7048. Two VBs (51y or 27y A1V and 100y A1V) at 2.6", in a configuration similar to Eps Lyr. The inner orbits are likely co-planar. 19465+3343 = HR 7534 = 17 Cyg. Two VBs (26" F7V and 232y K3V) at 792", CPM. 20194+1422 = HIP 100192. SB1 (1092d) and VB (0.2" F5?) at 3.3". 20432+5707 = HR 7940. SB2+EB (100d B2III) and SB1 (159d B2V?) in a tight 21y orbit. 20587-7025 = HIP 103545 = KZ Pav. EB (0.95d F6V) and VB (0.89" F9V?) at 7". 21424+4105 = HR 8300 = 77 Cyg. Sextuple. The inner quadruple is a 27y pair AB composed of two SBs (1.7d A1V and 35d B8V). There is also a CPM pair with 109y period at 156" from AB. 23019+4220 = HR 8762 = Omi And. VB (8.3y B6III) and SB2 (33d A2p) on a 68y outer orbit. The inner and outer visual orbits are not co-planar. 23194-0507 = HR 8868 = 96 Aqr. Two SBs (21d F3IV and 658d M0?) at 9.8". 23304+3050 = HIP 116017. The quadruple is composed of two SB2s (1.9d F6V and 13d F7V) on 48y orbit. There is a companion at 19". --------------------------------------------------------------