<10=less than 10 LD from Earth

EBN Timeline for April 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)
30 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
20152011 JN5 enters 10-LD bubble90001041distant 2010 UP last observed optically, by PS1 at 43.41 LD, w=21.9 reported
0940distant 2010 UP observed first, by PS1 at 43.38 LD, w=21.8 reported, elon. 166.4°
04042011 JY1 closest Earth approach = 7.51 LD
28 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
15402011 HN24 exits 10-LD bubble800008052011 HJ last observed optically, by Holmes/CTIO at 5.32 LD outbound, V=18.7 reported
14272011 HP4 enters 10-LD bubble900007492011 HD24 designation credited to MLS at 26.88 LD inbound, V=20.1 reported, elon. 178.2°
07122011 HC24 designation credited to MLS at 50.46 LD inbound, V=20.6 reported, elon. 172.8°
07042011 HJ closest Earth approach = 5.32 LD
00102011 HP4 last observed optically, by Great Shefford Obs. at 11.83 LD inbound, R=19.9 reported
27 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
17582011 JY1 enters 10-LD bubble800021182008 UC202 closest Earth approach = 8.92 LD - Note: JPL reports an approach to 8.92 LD (8.10 minimum) with an uncertainty of +/- one hour and 22 minutes.
17372009 UK20 enters 10-LD bubble700012242011 GJ3 closest Earth approach = 7.74 LD
12482011 JA exits 10-LD bubble600011012011 HN24 designation credited to PS1 at 8.35 LD outbound, r=20.2 reported, elon. 160.8°
03572011 JV10 enters 10-LD bubble7000
26 April 2011
UTEvents
06142011 HP4 designation credited to MLS at 17.33 LD inbound, V=21.5 reported, elon. 170.0°
25 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
22452011 JA exits Earth SOI600014242011 JA closest Earth approach = 1.62 LD
16322011 JA more than one LD from Moon610013062011 JA closest lunar approach = 0.67 LD
09412011 JA within one LD of Moon6110
06032011 JA enters Earth SOI6100
00012011 JM5 enters 10-LD bubble6000
24 April 2011
UTEvents
09072011 HJ designation credited to MLS at 7.92 LD inbound, V=18.1 reported, elon. 172.5°
23 April 2011
UTBoundary Transitions<10<SIM<1E<1
15592011 JA enters 10-LD bubble5000
22 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
21142011 HN24 exits Earth SOI400021342011 GJ3 last observed optically, by Great Shefford Obs. at 9.59 LD inbound, R=18.9 reported
18162008 UC202 enters 10-LD bubble410001372011 HN24 closest lunar approach = 2.00 LD
15522011 HJ enters 10-LD bubble3100
08292011 GJ3 enters 10-LD bubble2100
21 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
07382011 GP59 exits 10-LD bubble110014292011 HN24 closest Earth approach = 1.60 LD
20 April 2011
UTBoundary Transitions<10<SIM<1E<1
07452011 HN24 enters Earth SOI2100
17 April 2011
UTBoundary Transitions<10<SIM<1E<1
02272011 GE exits 10-LD bubble2000
16 April 2011
UTBoundary Transitions<10<SIM<1E<1
21242011 GP59 exits Earth SOI3000
00412011 GP59 more than one LD from Moon3100
15 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
05482011 GP59 within one LD of Moon311020292011 GP59 last observed optically, by Siegen Obs. at 1.39 LD outbound, V=14.9 reported
19092011 GP59 closest Earth approach = 1.39 LD
15142011 GP59 closest lunar approach = 0.61 LD
14 April 2011
UTBoundary Transitions<10<SIM<1E<1
16552011 GP59 enters Earth SOI3100
13032011 HN24 enters 10-LD bubble3000
13 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
13012011 FT53 exits 10-LD bubble200015192011 FT53 last observed optically, by Tholen team/Mauna Kea at 10.17 LD outbound, R=21.2 reported, elon. 73.4°
08312011 GD last observed optically, by Spacewatch 1.8m at 51.08 LD outbound, V=20.99 calculated
01342011 GE closest Earth approach = 4.77 LD
12 April 2011
UTEvents
09322011 GE last observed optically, by Sandlot Obs. at 4.99 LD inbound, R=18.4 reported
11 April 2011
UTBoundary Transitions<10<SIM<1E<1
17462011 GZ2 exits 10-LD bubble3000
10 April 2011
UTBoundary Transitions<10<SIM<1E<1
06512011 GP59 enters 10-LD bubble4000
03562011 GW9 exits 10-LD bubble3000
9 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
20542011 GP28 exits 10-LD bubble400020192011 FT53 closest Earth approach = 6.00 LD
00492011 GE enters 10-LD bubble5000
8 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
20072011 FT29 exits 10-LD bubble400023352011 GZ2 closest Earth approach = 2.66 LD
22382011 GP59 designation credited to La Sagra Obs. at 12.40 LD inbound, V=17.5 reported, elon. 140.7°
22002011 GZ2 last observed optically, by Great Shefford Obs. at 2.67 LD inbound, R=17.9 reported, elon. 81.2°
7 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
13072011 GP28 exits Earth SOI500000382011 FT29 closest Earth approach = 6.28 LD
03122011 GW9 exits Earth SOI510000362011 GP28 closest lunar approach = 1.00 LD
02412011 GP28 exits Earth-Moon system5200
01082011 GP28 more than one LD from Moon5201
00002011 GP28 within one LD of Moon5211
6 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
18512011 GW9 more than one LD from Moon520119362011 GP28 closest Earth approach = 0.25 LD - Note: JPL reports an approach to 0.25 LD with an uncertainty of +/- 5 minutes.
13002011 GW9 exits Earth-Moon system521111432011 GW9 closest lunar approach = 0.61 LD
12322011 GP28 enters Earth-Moon system521211422011 EW74 last observed optically, by Hills/RAS Moorook at 31.72 LD outbound, R=19.9 reported
05232011 GZ2 enters 10-LD bubble521104532011 GW9 closest Earth approach = 0.52 LD
04352011 GW9 within one LD of Moon4211
03562011 FT53 enters 10-LD bubble4201
02062011 GP28 enters Earth SOI3201
5 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
20462011 GW9 enters Earth-Moon system310117482011 GW9 last observed optically, by Bisei at 1.28 LD inbound, R=16.7 reported
19552011 FT9 exits 10-LD bubble310011032011 FT29 last observed optically, by Hills/RAS Moorook at 9.20 LD inbound, R=18.0 reported
06342011 GW9 enters Earth SOI410009282011 GM44 designation credited to SSS at 22.90 LD outbound, V=16.0 reported, elon. 92.0°
05092011 FT29 enters 10-LD bubble400008072011 GP28 last observed optically, by Sandlot Obs. at 4.85 LD inbound, R=20.3 reported
4 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
05272011 FA23 exits 10-LD bubble300010132011 GW9 designation credited to MLS at 4.52 LD inbound, V=19.4 reported, elon. 158.1°
08442011 GP28 designation credited to MLS at 8.04 LD inbound, V=21.5 reported, elon. 170.4°
3 April 2011
UTBoundary Transitions<10<SIM<1E<1
18212011 GP28 enters 10-LD bubble4000
2 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
10572011 GM44 exits 10-LD bubble300009592011 GB3 designation credited to LINEAR at 13.71 LD outbound, mag 17.8 reported, elon. 146.6°
05532011 GW9 enters 10-LD bubble400006532011 GJ3 designation credited to MLS at 33.43 LD inbound, V=21.3 reported, elon. 173.3°
05202011 GZ2 designation credited to MLS at 23.84 LD inbound, V=21.2 reported, elon. 160.6°
05142011 FZ22 last observed optically, by ARO Westfield at 82.96 LD outbound, V=21.8 reported
1 April 2011
UTBoundary Transitions<10<SIM<1E<1Events
12082011 FA23 exits Earth SOI300018132011 GM44 closest Earth approach = 9.15 LD
01292011 GM44 enters 10-LD bubble310010172011 GE designation credited to MLS at 26.10 LD inbound, V=21.1 reported, elon. 170.2°
10082011 FA23 closest lunar approach = 2.01 LD
08282011 GD designation credited to CSS at 22.08 LD outbound, V=18.9 reported, elon. 168.1°
03252011 FT9 closest Earth approach = 7.55 LD
03112011 FA23 closest Earth approach = 2.10 LD


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