<10=less than 10 LD from Earth

EBN Timeline for December 2011

<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)
31 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
03052011 YE40 exits 10-LD bubble1020022222012 AP10 closest lunar approach = 1.48 LD
09172011 YC63 designation credited to MLS at 5.48 LD outbound, V=20.45 calculated, elon. 168.2°
03582011 YB63 designation credited to MLS at 4.30 LD inbound, V=21.1 reported, elon. 135.8°
30 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
15292011 YC63 exits Earth SOI1120020222012 AP10 closest Earth approach = 1.06 LD
11562011 YX15 exits 10-LD bubble1130014182011 YE40 closest Earth approach = 9.88 LD
09452012 AQ exits Earth-Moon system1230007422011 YC40 last observed optically, by MLS at 5.53 LD outbound, V=21.7 reported
07362011 YW15 exits 10-LD bubble1230103112011 YE40 designation credited to LINEAR at 9.97 LD inbound, mag 18.9 reported, elon. 149.1°
06412011 YC63 exits Earth-Moon system1330102152011 YC63 closest Earth approach = 0.63 LD
01322011 YE40 enters 10-LD bubble1330200412011 YD29 closest Earth approach = 5.99 LD
00032011 YC63 closest lunar approach = 1.51 LD
29 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
22572012 BC14 enters 10-LD bubble1230218122011 YE29 closest Earth approach = 7.02 LD
22092011 YL28 enters 10-LD bubble1130210002011 YH40 designation credited to CSS at 38.74 LD inbound, V=19.2 reported, elon. 141.3°
21492011 YC63 enters Earth-Moon system1030209552011 YT62 designation credited to CSS at 62.33 LD outbound, V=19.9 reported, elon. 138.9°
13012011 YC63 enters Earth SOI1030108312012 AQ closest Earth approach = 0.70 LD
13002012 AQ more than one LD from Moon1020108092011 YE29 designation credited to LINEAR at 7.13 LD inbound, mag 18.0 reported, elon. 129.6°
08452000 YA exits 10-LD bubble1021107572011 YD29 designation credited to CSS at 6.08 LD inbound, V=18.7 reported, elon. 137.7°
01272011 YC40 exits Earth SOI1121106312011 YC40 designation credited to MLS at 2.93 LD outbound, V=19.9 reported, elon. 158.0°
28 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
11412011 YC40 exits Earth-Moon system1131121422011 WS95 closest Earth approach = 7.11 LD
07162012 AQ enters Earth-Moon system1131218562011 XC2 last observed optically, by Great Shefford Obs. at 118.49 LD outbound, R=22.2 reported
06112012 AP10 enters Earth SOI1131111262012 AQ closest lunar approach = 0.79 LD
02472011 YB63 enters 10-LD bubble1121105202011 YL28 designation credited to LINEAR at 12.76 LD inbound, mag 19.6 reported, elon. 144.0°
05052011 YQ1 last observed optically, by Spacewatch 0.9m at 36.40 LD outbound, V=21.24 calculated
02292011 YC40 closest Earth approach = 0.28 LD - Note: JPL reports an approach to 0.28 LD with an uncertainty of +/- 5 minutes.
27 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
23492011 YC40 more than one LD from Moon1021117462011 YC40 closest lunar approach = 0.79 LD
17232011 YC63 enters 10-LD bubble1022114492000 YA last observed by radar, from Arecibo at 5.11 LD outbound, V=nil
17172011 YC40 enters Earth-Moon system922108132011 YX15 designation credited to CSS at 8.28 LD outbound, V=18.0 reported, elon. 135.5°
11442011 YC40 within one LD of Moon922008052011 YW15 designation credited to CSS at 7.27 LD outbound, V=17.3 reported, elon. 149.5°
10022012 AQ within one LD of Moon921006492011 YX15 closest Earth approach = 8.28 LD
08332011 YE29 enters 10-LD bubble9200
03302011 YC40 enters Earth SOI8200
26 Dec. 2011
UTEvents
19122011 WS95 last observed optically, by LIMIT at 8.19 LD inbound, V=16.3 reported
05362000 YA closest Earth approach = 2.87 LD
25 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
21362012 AQ enters Earth SOI8100
06362011 WS95 enters 10-LD bubble8000
24 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
15452011 YD29 enters 10-LD bubble70000808distant 436724 2011 UW158 last observed optically, by Spacewatch 1.8m at 408.40 LD, V=22.43 calculated
02022011 YC40 enters 10-LD bubble600004552000 YA last observed optically, by Palmer Divide Obs. at 6.84 LD inbound, R=15.9 reported
01112011 YX15 enters 10-LD bubble50000336distant 136617 1994 CC last observed optically, by MLS at 456.22 LD, V=20.7 reported, elon. 95.1°
23 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
02312000 YA enters 10-LD bubble400002102000 YA first observed by radar, from Arecibo at 10.04 LD inbound, V=16.79 calculated
22 Dec. 2011
UTEvents
20262011 YW15 closest Earth approach = 5.12 LD
18 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
19132012 AP10 enters 10-LD bubble300000462011 YQ1 designation credited to Crni Vrh Obs. at 9.11 LD outbound, R=17.9 reported, elon. 161.0°
08542011 YQ1 exits 10-LD bubble2000
16 Dec. 2011
UTEvents
2006308635 2005 YU55 last observed optically, by Kislovodsk Mtn. Sta. at 127.60 LD outbound, V=21.82 calculated
15 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
10092011 YQ1 exits Earth SOI3000
07562011 YW15 enters 10-LD bubble3100
14 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
00542012 AQ enters 10-LD bubble210021532011 YQ1 closest lunar approach = 1.24 LD
14192011 YQ1 closest Earth approach = 1.02 LD
13 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
18292011 YQ1 enters Earth SOI1100
11 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
00062003 XV exits 10-LD bubble1000
10 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
19472011 YQ1 enters 10-LD bubble2000
8 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
02062003 XV exits Earth SOI100004452011 XC2 designation credited to LINEAR at 21.39 LD outbound, mag 18.3 reported, elon. 125.2°
7 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
03102003 XV more than one LD from Moon110006412003 XV closest Earth approach = 1.06 LD
6 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
17072011 WU74 exits 10-LD bubble111021512003 XV last observed optically, by Great Shefford Obs. at 1.44 LD inbound, R=16.0 reported
16212003 XV within one LD of Moon211021442003 XV closest lunar approach = 0.79 LD
11152003 XV enters Earth SOI2100
5 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1
18192011 XC2 exits 10-LD bubble2000
4 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
20342011 WV74 exits 10-LD bubble300010142011 WU74 closest Earth approach = 4.21 LD
02452011 XC2 exits Earth SOI4000
3 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
20262011 XC2 more than one LD from Moon410016212011 XC2 closest lunar approach = 0.62 LD
17332011 XC2 exits Earth-Moon system411015212011 XC2 closest Earth approach = 0.90 LD
13132003 XV enters 10-LD bubble4111
13092011 XC2 enters Earth-Moon system3111
12162011 XC2 within one LD of Moon3110
03572011 XC2 enters Earth SOI3100
2 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
16132011 WV74 exits Earth SOI300011342011 WV74 closest Earth approach = 2.27 LD
06552011 WV74 enters Earth SOI310005452011 WU74 last observed optically, by ARO Westfield at 9.64 LD inbound, V=19.5 reported
03202011 WU74 enters 10-LD bubble3000
1 Dec. 2011
UTBoundary Transitions<10<SIM<1E<1Events
12232011 XC2 enters 10-LD bubble200013002011 WV74 last observed optically, by Mt. John Obs. at 4.47 LD inbound, R=19.0 reported
09222011 WF44 last observed optically, by PS1 at 39.85 LD outbound, w=21.3 reported
04282011 WJ15 last observed optically, by ARO Westfield at 63.86 LD outbound, V=22.49 calculated


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