<10=less than 10 LD from Earth

EBN Timeline for April 2009

<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 2009
UTBoundary Transitions<10<SIM<1E<1Events
23062009 JA enters 10-LD bubble30001117distant 2009 DL46 last observed optically, by Spacewatch 0.9m at 55.74 LD, V=19.7 reported, elon. 87.9°
21492009 HJ36 exits 10-LD bubble200006212009 JS closest Earth approach = 3.29 LD - Note: JPL reports an approach to 3.29 LD (3.16 minimum) with an uncertainty of +/- 19 minutes.
29 April 2009
UTEvents
08112009 HK73 discovered by CSS at 3.28 LD outbound, V=17.5 reported, elon. 143.4°
0508distant 2009 HE60 last observed optically, by Spacewatch 1.8m at 40.51 LD, V=22.2 reported
28 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
18222009 HK73 exits Earth SOI300020262009 HJ36 closest Earth approach = 9.59 LD
11242009 HS44 exits 10-LD bubble3100
27 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
10072009 HK73 more than one LD from Moon410012542009 HK73 closest Earth approach = 1.23 LD
07062009 HW67 discovered by MLS at 12.97 LD outbound, V=18.9 reported, elon. 177.6°
06182009 HG60 discovered by CSS at 14.38 LD outbound, V=16.9 reported, elon. 138.7°
02532009 HK73 closest lunar approach = 0.86 LD
26 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
19432009 HK73 within one LD of Moon411006472009 HS44 closest Earth approach = 4.61 LD
19242009 HJ36 enters 10-LD bubble410002382009 HS44 last observed optically, by Great Shefford Obs. at 4.66 LD inbound, R=18.7 reported
17162009 HW67 exits 10-LD bubble3100
07252009 HK73 enters Earth SOI4100
25 April 2009
UTBoundary Transitions<10<SIM<1E<1
18552009 JS enters 10-LD bubble4000
11292009 HF21 exits 10-LD bubble3000
07012009 HG60 exits 10-LD bubble4000
05112009 HJ21 exits 10-LD bubble5000
05072009 HW67 exits Earth SOI6000
24 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
18212009 FJ30 exits 10-LD bubble610019042009 HW67 closest Earth approach = 1.05 LD
09012009 HW67 enters Earth SOI710015372009 HG60 closest Earth approach = 9.65 LD - Note: JPL reports an approach to 9.64 LD (9.62 minimum) .
02122009 HS44 enters 10-LD bubble700014242009 HW67 closest lunar approach = 1.07 LD
00122009 HG60 enters 10-LD bubble60000543distant 2009 HE60 discovered by MLS at 32.58 LD, V=20.8 reported, elon. 171.7°
23 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
11532009 HJ21 exits Earth SOI500023442009 FJ30 closest Earth approach = 9.69 LD
05082009 FJ30 enters 10-LD bubble51000912distant 2007 DD observed first, by Tholen team/Mauna Kea at 42.31 LD, R=22.2 reported, elon. 150.7°
05352009 HJ21 closest lunar approach = 1.11 LD
01092009 HJ21 closest Earth approach = 1.26 LD
22 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
20522009 HW67 enters 10-LD bubble410015382009 HF21 last observed optically, by Mt. John Obs. at 7.55 LD outbound, R=19.0 reported
14242009 HJ21 enters Earth SOI310009282009 HJ36 last observed optically, by MLS at 13.17 LD inbound, V=20.5 reported
08032009 HJ21 last observed optically, by ARO at 3.50 LD inbound, V=18.6 reported
07462009 HS44 discovered by MLS at 16.71 LD inbound, V=20.3 reported, elon. 173.6°
21 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
15202009 HK73 enters 10-LD bubble300020382009 HF21 closest Earth approach = 7.41 LD
09262009 HJ36 discovered by MLS at 14.18 LD inbound, V=21.2 reported, elon. 174.2°
08432009 HJ21 discovered by MLS at 7.81 LD inbound, V=19.7 reported, elon. 168.9°
20 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
21082009 HJ21 enters 10-LD bubble200009212009 HF21 discovered by CSS at 7.90 LD inbound, V=18.3 reported, elon. 160.3°
04562009 FJ30 last observed optically, by El Condor Obs. at 15.51 LD inbound, V=16.80 calculated
18 April 2009
UTBoundary Transitions<10<SIM<1E<1
06192009 HF21 enters 10-LD bubble1000
17 April 2009
UTEvents
06332009 FJ last observed optically, by ARO at 73.32 LD outbound, V=22.2 reported
05332009 HC discovered by Spacewatch 0.9m at 10.82 LD outbound, V=18.3 reported, elon. 168.5°
16 April 2009
UTBoundary Transitions<10<SIM<1E<1
02272009 HC exits 10-LD bubble0000
15 April 2009
UTEvents
17562001 SG286 observed first, by SSS at 80.47 LD inbound, V=18.2 reported, elon. 146.8°
11 April 2009
UTEvents
0853distant 2009 FE last observed optically, by Sandlot Obs. at 41.77 LD, R=18.1 reported
9 April 2009
UTBoundary Transitions<10<SIM<1E<1
21482009 FQ32 exits 10-LD bubble1000
5 April 2009
UTEvents
11272009 HC closest Earth approach = 5.10 LD
4 April 2009
UTBoundary Transitions<10<SIM<1E<1
08122009 FU30 exits 10-LD bubble2000
3 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
22512009 FP32 exits 10-LD bubble300000572009 FU30 last observed optically, by Wildberg Obs. at 8.98 LD outbound, V=18.7 reported
05262009 FO32 exits 10-LD bubble4000
2 April 2009
UTEvents
06152009 FU30 closest Earth approach = 8.80 LD
1 April 2009
UTBoundary Transitions<10<SIM<1E<1Events
15022009 FP32 exits Earth SOI500007522009 FW4 last observed optically, by MLS at 46.70 LD outbound, V=20.6 reported
05422009 FP32 more than one LD from Moon510005372009 FG last observed optically, by Spacewatch 1.8m at 64.57 LD outbound, V=22.36 calculated
00372009 FV23 exits 10-LD bubble511000382009 FP32 closest lunar approach = 0.65 LD


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