<10=less than 10 LD from Earth

EBN Timeline for September 2012

<SI=inside Earth SOI (sphere of influence)
M<1=less than 1 LD from the Moon
E<1=less than 1 LD from Earth (intruder)
LD = lunar distance (average Earth-Moon distance)
30 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
20572012 SL50 exits 10-LD bubble2000
18072012 SY49 exits 10-LD bubble3000
29 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
20142012 SJ58 enters 10-LD bubble4000
28 Sept. 2012
UTEvents
2009discovery MPEC issued for 2012 SJ58
1756discovery MPEC issued for 2012 SF58
01042012 SY49 closest Earth approach = 2.61 LD
27 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
03502012 TP20 enters 10-LD bubble300007442012 SL50 closest Earth approach = 2.84 LD
05512012 SF58 last observed optically, by MLS at 15.96 LD outbound, V=19.1 reported
26 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
10012012 RK15 exits 10-LD bubble20001728discovery MPEC issued for 2012 SR56
09542012 SY49 last observed optically, by McDonald Obs. at 6.37 LD inbound, V=18.04 calculated
08342012 SJ58 designation credited to MLS at 17.50 LD inbound, V=20.4 reported, elon. 169.8°
04122012 SF58 designation credited to MLS at 12.95 LD outbound, V=19.7 reported, elon. 171.6°
25 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
08002012 SY49 enters 10-LD bubble30001632discovery MPEC issued for 2012 SL50
15422012 SL50 last observed optically, by Bisei at 5.32 LD inbound, R=18.5 reported
07282012 SR56 designation credited to Spacewatch 0.9m at 19.81 LD outbound, V=19.0 reported, elon. 164.7°
24 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
23582012 SF58 exits 10-LD bubble20001941discovery MPEC issued for 2012 SY49
16532012 RK15 closest Earth approach = 8.16 LD
05092012 SU9 last observed optically, by ARO Westfield at 27.00 LD outbound, V=22.1 reported
04542012 SL50 designation credited to CSS at 8.89 LD inbound, V=19.8 reported, elon. 153.9°
23 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
18352012 SL50 enters 10-LD bubble300006042012 SB3 last observed optically, by ARO Westfield at 19.22 LD outbound, V=21.9 reported
22 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
23412012 RK15 enters 10-LD bubble200019412012 SF58 closest Earth approach = 7.12 LD
07182012 SW2 exits 10-LD bubble100006232012 SY49 designation credited to Sandlot Obs. at 20.78 LD inbound, R=19.9 reported, elon. 169.5°
05162012 SZ2 exits 10-LD bubble200005262012 RJ10 last observed optically, by MRO at 62.37 LD outbound, R=21.4 reported
21 Sept. 2012
UTEvents
23502012 SZ2 last observed optically, by Holmes/CTIO at 9.70 LD outbound, V=19.6 reported
04062012 RM15 last observed optically, by Holmes/CTIO at 23.27 LD outbound, V=19.2 reported
01372012 RK15 last observed optically, by Holmes/CTIO at 14.71 LD inbound, V=18.6 reported
20 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
16572012 SR56 exits 10-LD bubble30001746discovery MPEC issued for 2012 SU9
15162012 SF58 enters 10-LD bubble4000
00392012 SW2 exits Earth SOI3000
19 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
03592012 SW2 enters Earth SOI310019592012 SZ2 closest Earth approach = 8.19 LD
16582012 SW2 closest lunar approach = 1.97 LD
14192012 SW2 closest Earth approach = 1.83 LD
05232012 SU9 designation credited to MLS at 15.37 LD outbound, V=20.3 reported, elon. 172.4°
01522012 SW2 last observed optically, by Great Shefford Obs. at 2.62 LD inbound, R=18.3 reported
18 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
06022012 SB3 exits 10-LD bubble30001623discovery MPEC issued for 2012 SB3
1618discovery MPEC issued for 2012 SZ2
1611discovery MPEC issued for 2012 SW2
02532012 QG42 last observed optically, by Harlingten Research Obs. at 12.19 LD outbound, R=18.3 reported, elon. 54.4°
17 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
10542012 SZ2 enters 10-LD bubble40001813discovery MPEC issued for 2012 RT16
1808discovery MPEC issued for 2012 RR16
11382012 RT16 last observed optically, by Mt. John Obs. at 14.85 LD outbound, R=21.0 reported
07452012 SB3 designation credited to MLS at 8.36 LD outbound, V=19.8 reported, elon. 176.0°
04082012 SZ2 designation credited to LINEAR at 10.41 LD inbound, mag 19.1 reported, elon. 146.4°
16 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
22052012 QG42 exits 10-LD bubble30001628discovery MPEC issued for 2012 RM15
21212012 SW2 enters 10-LD bubble40001624discovery MPEC issued for 2012 RK15
17172012 SU9 exits 10-LD bubble300016042012 SR56 closest Earth approach = 4.41 LD
06352012 SW2 designation credited to MLS at 12.21 LD inbound, V=21.3 reported, elon. 160.9°
02082012 QB18 last observed optically, by ESA OGS at 90.62 LD outbound, R=21.2 reported
15 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
05122012 RT16 exits 10-LD bubble40002134discovery MPEC issued for 2012 RJ10
04312012 RT16 designation credited to MLS at 9.94 LD outbound, V=19.9 reported, elon. 154.8°
14 Sept. 2012
UTEvents
11022012 RR16 designation credited to CSS at 12.35 LD outbound, V=18.3 reported, elon. 116.4°
07422012 RM15 designation credited to CSS at 10.57 LD outbound, V=17.2 reported, elon. 164.8°
05422012 RK15 designation credited to CSS at 36.37 LD inbound, V=19.8 reported, elon. 159.3°
05132012 QG42 closest Earth approach = 7.43 LD
13 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
23282012 RM15 exits 10-LD bubble500006192012 RJ10 designation credited to MLS at 30.12 LD outbound, V=19.9 reported, elon. 177.3°
03422012 SU9 closest Earth approach = 5.37 LD
03192012 SB3 closest Earth approach = 3.04 LD
12 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
15122012 SR56 enters 10-LD bubble6000
07222012 RR16 exits 10-LD bubble5000
11 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
12352012 QG42 enters 10-LD bubble600011062012 RT16 closest Earth approach = 4.90 LD
09302012 PD20 last observed optically, by ARO Westfield at 34.50 LD outbound, V=22.1 reported
9 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
13502012 SU9 enters 10-LD bubble500014252012 RM15 closest Earth approach = 5.32 LD
8 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1Events
00012012 SB3 enters 10-LD bubble40000717distant 2009 BW2 last observed optically, by Tholen team/Mauna Kea at 39.62 LD, R=21.3 reported
7 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
16402012 RT16 enters 10-LD bubble3000
05202012 RJ10 exits 10-LD bubble2000
6 Sept. 2012
UTEvents
05452012 RR16 closest Earth approach = 6.07 LD
5 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
04532012 RM15 enters 10-LD bubble3000
4 Sept. 2012
UTEvents
17592012 RJ10 closest Earth approach = 5.16 LD
2 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
06342012 RJ10 enters 10-LD bubble2000
1 Sept. 2012
UTBoundary Transitions<10<SIM<1E<1
19242012 QZ16 exits 10-LD bubble1000


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