Dear Colleagues, In the August lunation, the "June-July targets problem" is gone. There is one returning binary, (4029) Bridges, discovered in April 2006 by Higgins et al. (CBET 507). Its basic parameters have been well estimated Ds/Dp= 0.24 +/-0.02 P1= 3.5746 +/-0.0001 h Porb= 16.31 +/-0.01 h A1= 0.20 mag http://www.asu.cas.cz/~asteroid/4029_all.png http://www.asu.cas.cz/~asteroid/4029_longpc.png http://www.asu.cas.cz/~asteroid/4029_longpc_contacts.png http://www.asu.cas.cz/~asteroid/4029_shortpc.png It will be in opposition in September at V~16.5 and Dec=+4 deg. In this August lunation, initial pre-opposition observations would be good to take, though the asteroid will be a bit faint with V~17. Work it in best conditions only. Unless you can take data with errors <0.03 mag, don't bother and leave it for others (or wait for the opposition in September). A help with two non-Survey NEA binaries (or serious suspect), 2007 DT103 and (85275) 1994 LY has been asked for by Lance Benner and by Yura Krugly, respectively. Their conditions are less than ideal, but your observations could be obviously useful. We don't know much about the former, so I cannot tell what data quality are needed for it (but certainly data with errors not greater than 0.03 mag and sessions longer than 2 hours would be needed). For the latter, only data with errors <0.02 mag and duration >2 h might be useful. This list of targets is also available on http://www.asu.cas.cz/~asteroid/binastphotsurvey_listoftargets20070813.txt Clear Skies, Petr Pravec Object V Dec Elo Mot Bga H q a Arc 0. Worked objects: (6265) 1985 TW3 15.1 -30 151v 0.1 -23 13.5 1.75 2.17 11opp Binary. Follow up by David or Julian in August or, even better, in September would be useful for future modeling of the system. Covering each of the two events twice by mid-September, plus some coverage outside events, should suffice. (10443) van der Pol 15.8 -2 167 0.2 -33 13.7 1.95 2.27 10opp A few good nights should establish this one. 1. Returning binaries (4029) Bridges 17.3 8 132^ 0.1 -54 12.9 2.19 2.52 16opp 12.9 3.5746 0.20 3 B 2. Returning "prime suspects", to be followed up on their 2nd (3rd, ...) apparitions Object V Dec Elo Mot Bga H q a Arc Hrev P Ampl U (2195) Tengstrom 15.1 -14 160^ 0.2 -59 12.6 1.99 2.22 15opp 12.6 2.816 0.20 3- 3. New targets (1418) Fayeta 14.2 -4 140^ 0.1 -64 12.1 1.78 2.24 22opp (1739) Meyermann 15.6 1 146^ 0.1 -55 12.9 1.98 2.26 13opp (2575) Bulgaria 15.9 2 140^ 0.1 -57 12.6 1.97 2.24 13opp (2623) Zech 14.8 -8 154^ 0.1 -59 13.1 1.73 2.25 15opp (2896) Preiss 14.9 1 145^ 0.1 -57 12.7 1.81 2.22 12opp (3069) Heyrovsky 15.3 -5 161^ 0.1 -51 13.8 1.78 2.35 11opp (3722) Urata 14.7 3 160^ 0.2 -40 12.9 1.79 2.24 13opp (3936) Elst 16.1 5 149^ 0.2 -49 13.0 2.12 2.43 14opp (3972) Richard 16.1 -3 150^ 0.1 -57 14.4 1.78 2.16 14opp (4583) Lugo 15.7 0 142^ 0.1 -59 13.2 1.90 2.35 12opp (5615) Iskander 15.2 -3 168^ 0.2 -40 13.8 1.83 2.27 11opp (6963) 1990 OQ3 15.8 5 141^ 0.1 -54 13.5 1.82 2.25 15opp (7870) 1987 UP2 15.1 -3 163^ 0.2 -46 13.3 1.63 2.24 9opp (9120) 1998 DR8 15.5 1 160^ 0.2 -43 13.7 1.81 2.27 12opp (10208) 1997 QN1 15.8 -5 170 0.2 -34 14.6 1.79 2.24 7opp (10313) Vanessa-Mae 15.4 -8 172^ 0.2 -42 14.0 1.79 2.26 8opp (10320) Reiland 16.1 -3 163^ 0.2 -46 14.0 1.98 2.29 9opp (10497) 1986 RQ 16.0 11 143^ 0.1 -45 13.7 1.88 2.31 13opp (10597) 1996 TR10 15.4 -1 148^ 0.2 -57 13.4 1.78 2.40 8opp (16635) 1993 QO 15.9 12 144^ 0.4 -43 13.9 1.65 2.30 7opp (23225) 2000 WD25 16.2 -1 149^ 0.2 -56 14.0 1.79 2.45 9opp (25328) 1999 JK83 16.1 6 157^ 0.2 -38 13.8 1.95 2.42 12opp (32008) 2000 HM53 15.7 0 165 0.2 -36 14.1 1.77 2.19 7opp (32039) 2000 JO23 16.3 5 143^ 0.2 -52 14.8 1.60 2.22 6opp (45791) 2000 OD45 16.1 -5 160^ 0.3 -51 14.6 1.78 2.32 7opp (68220) 2001 CT38 15.9 2 144^ 0.3 -56 13.4 1.88 2.44 5opp Note: The ephemerides were computed for 2007-08-13 ^/v means that the value increases/decreases by more than 0.05 mag/day (for V) or by more than 0.5 deg/day for Dec and Elong. The rate of apparent motion (Mot) is in deg/day. Bga is the galactic latitude. Compact listing: (6265) (10443) (4029) (2195) (1418) (1739) (2575) (2623) (2896) (3069) (3722) (3936) (3972) (4583) (5615) (6963) (7870) (9120) (10208) (10313) (10320) (10497) (10597) (16635) (23225) (25328) (32008) (32039) (45791) (68220)