Kurt Schwehr 414 Distel Dr. Los Altos, CA. 94022 (415)948-0257 Truk@Leland.Stanford.Edu Summery of Results* from Visual Inspection of Robotic Telescope Data 8/91 Group: 1 Reference Star: HD 56986 Group: 3 Reference Star: HD 102590 HD 98231 Transit seen in Night Table Period: 74 or greater Transit time: 25 to 49 Days *Possibly seen starting again JD 324 Not seen in Blue Filter(2) data Group: 4 Reference Star: HD 145976 ** Not Much Data ** Group: 5 Reference Star: HD 77745 HD 77660 Transit seen in Night Table Period: unknown (greater than 126 days) Transit time: 25 to 45 days *Not seen in Blue Filter(2) data Group: 6 Reference Star: HD 176583 HD 176895 Transit seen on JD 65 Group: 7 Reference Star: HD 91752 HD 91148 Transit Seen in Night Table Sparce Data Group: 101 Reference Star: HD 113848 HD 113022 Possible period around 8 days seen. HD 113848 Oscillations on JD 44 seen in graphs for 3 other stars relative to this one. Clearest example in graph of 114278 relative to 113848 Oscillation Time: 28 Minutes HD 114378 -- 42 Alfa Com Alpha Com. Ber. in plane binary - period ~ 20 years - i = 90.06 deg. HD 114762 -- Latham's Star Latham finds a dark companion with p = 84 days ** Find rotation tau and ________ of companion Transit observed from JD 268 to 351 Transit Duration: 83 Days Possible Period: 169 Days Group: 105 Reference Star: HD 91480 HD 90839 Has 1 to 15 Mj companion according to Latham. This star is ____ on Cochrane's list Possible Transits: JD 294.8 Possibly Noise JD 314.7 Possibly Noise Group: 110 Reference Star: HD 124570 HD 123845 Possible Transits: JD 59 JD 291 HD 124570 -- Lockwood constant star HD 125451 -- Lockwood star Possible Transits: JD 48 JD 59 JD 324 Group: 118 Reference Star: HD 103313 HD 102870 BETA_VIR has 1 to 10 MJ companion according to Cambell It is also on Cochrane's list. Possible period of 70 to 74 Days HD 103313 Data shows the ref. star is probably variable - W. Borucki Possible period of 70 to 74 Days period could be in either HD 102870 or HD 103313 Possible period in the range of 2 hrs (see JD 281 graphs) Group: 148 Reference Star: HD 131265 HD 130396 Possible period of 20 Days. HD 131156 -- Xi-Boo has 2 to 8 MJ companion acc. to Cambell Find Rotation Rate - 6.2 days ?? acc. to Lockwood Possible Period of 6.5 days -- K.S. HD 131511 Transit seen on JD 46 Group: 174 Ref Star : 157856 HD 156635 Slight chance of period of about 9 days Group: 185 Reference Star: HD 171653 HD 171653 Transits observed that appear to be the reference star: JD 353 JD 382 This one is questionable. JD 425 HD 173084 -- Dra 2384 is a V.B. with i = 85.5 deg - period = 137 yrs Group: 193 Reference Star: HD 181144 Group: 210 Reference Star: HD 200790 HD 199766 -- Sigma Equ is a VB with i = 92.8 deg and period = 101 years actually it is a triplet with the 3rd star (dF4) 11" away and at 7.2 MV Transit seen in night table around JD 209 and JD 424 Possible period = 227 Days Transit observed on JD 59 in within night data Group: 225 Reference Star: HD 310000 HD 212754 -- Problem: Night table says that it is in Group 406 Group: 300 Reference Star: HD 1478 HD 1624 JD 276 - ?? Possible Period of about 15 minutes. Group: 310 Reference Star: HD 27991 HD 28363 -- Tau 1080 VB with tau = 40 yrs inclin = 92.6 deg HD 28677 -- Visual Binary Group: 315 Reference Star: HD 8272 HD 8538 -- Del Cass Star is an E.A. with a 759 day period Group: 320 Reference Star: HD 34180 * Check JD 320 * HD 35317 -- Ori_A847 VB with Tau = 48 yrs i = 90.0 degrees HD 36150 Possible Variable Star Possible Period = 6 days Group: 406 -- Did not look at this group. Group: 407 -- Did not look at this group. Group: 408 -- Did not look at this group. Group: 450 Reference Star: HD 122080 HD 120917 Possible Variable Star Possible Period: 22 to 27 Days HD 121648 Variable Star Period = 4.987 Group: 451 Reference Star: HD 34260 There is a lot happing in this group. HD 34260 The Reference star is probably variable. HD 34335 Transit observed on JD 338 HD 116209 Problem: Value Constant in NIT table HD 116209, 116568, 116802 Problem: There are less than 8 samples per star over the entire year! They probably should be a separate group. - K.S. * Sources of data: William Borucki's notes and visual inspection of graphs of the entire data (thru 7/91)set by Kurt Schwehr. All Julian Dates (JD) are JD - 2448000.