<10=less than 10 LD from Earth

EBN Timeline for April 2012

<HS=inside Earth's Hill sphere
M<1=less than 1 LD from the Moon
E<1=less than 1 LD from Earth (intruder)
LD = lunar distance = distance between Earth & Moon

[ Timeline main page | Timeline index | Observatory Links | bottom | next date ]

30 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
22312012 HM exits Earth's Hill sphere410023332012 HA34 last observed optically, by St. Pardon de Conques Obs. at 4.88 LD inbound, V=17.0 reported
15322012 HP13 exits 10-LD bubble420009062012 HA34 observed first, by CSS at 6.25 LD, V=18.0 reported, elon. 147.0°
12572012 HG2 exits 10-LD bubble520008182012 HE31 closest Earth approach = 2.71 LD
03551992 JD enters 10-LD bubble6200
29 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
03442012 HE31 enters Earth's Hill sphere52001444discovery MPEC issued for 2012 HE31
11302012 HE31 last observed optically, by SSS at 3.39 LD inbound, V=18.0 reported
28 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
20492012 HA34 enters 10-LD bubble51001325discovery MPEC issued for 2012 HD25
14312012 HN1 exits 10-LD bubble41001321discovery MPEC issued for 2012 HC25
10082012 HP13 exits Earth's Hill sphere510010562012 HC25 last observed optically, by Spacewatch 1.8m at 29.52 LD outbound, V=21.66 calculated
10052012 HM closest Earth approach = 1.45 LD
07462012 HM closest lunar approach = 1.08 LD
27 April 2012
UTEvents
23102012 HM last observed by radar, from DSS-14 (transmit) & DSS-13 (receive) at 1.59 LD inbound, V=15.98 calculated
22002012 HM first observed by radar, from DSS-14 (transmit) & DSS-13 (receive) at 1.62 LD inbound, V=15.90 calculated
20042012 HP13 last observed optically, by Alter Satzberg Obs. at 2.58 LD outbound, V=16.9 reported, elon. 73.6°
19572012 HM last observed optically, by Vitebsk Obs. at 1.68 LD inbound, R=15.5 reported, elon. 81.4°
10242012 HP13 closest lunar approach = 1.10 LD
09412012 HD25 observed first, by PS1 at 31.79 LD, i=18.6 reported, elon. 171.9°
06252012 HP13 closest Earth approach = 1.98 LD
04452012 HE31 observed first, by LINEAR at 7.87 LD, mag 19.2 reported, elon. 151.8°
26 April 2012
UTBoundary Transitions<10<HSM<1E<1
05552012 HE31 enters 10-LD bubble5200
02422012 HP13 enters Earth's Hill sphere4200
02132012 HE exits 10-LD bubble4100
00402012 HE2 exits 10-LD bubble5100
25 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
21342012 HM enters Earth's Hill sphere610008082012 HC25 observed first, by MLS at 25.89 LD, V=21.3 reported, elon. 149.8°
12142012 GP1 exits 10-LD bubble6000
24 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
21052012 HQ exits 10-LD bubble700008562012 HQ closest Earth approach = 9.76 LD
06322012 HE2 closest Earth approach = 8.91 LD
23 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
21202012 HP13 enters 10-LD bubble80002212discovery MPEC issued for 2012 HP13
20472012 HQ enters 10-LD bubble70002203discovery MPEC issued for 2012 HM13
12562007 HV4 exits 10-LD bubble600015112012 HN1 last observed optically, by Tholen team/Mauna Kea at 5.82 LD outbound, R=21.2 reported, elon. 75.5°
08582012 HM13 last observed optically, by Spacewatch 1.8m at 11.36 LD outbound, V=21.39 calculated
22 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
21452012 HM13 exits 10-LD bubble700013422012 HE closest Earth approach = 6.92 LD
16152012 HG2 exits Earth's Hill sphere800011252012 GP1 last observed optically, by Spacewatch 1.8m at 9.05 LD outbound, V=19.69 calculated
12322012 HE2 enters 10-LD bubble810011022012 HP13 observed first, by CSS at 14.08 LD, V=19.4 reported, elon. 114.2°
21 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
12052012 HM enters 10-LD bubble710012092012 HM13 observed first, by PS1 at 5.94 LD, r=19.8 reported, elon. 162.1°
10442012 HN1 closest Earth approach = 5.20 LD
09152012 HN last observed optically, by Chabot Obs. at 35.04 LD outbound, R=20.8 reported
08372012 HE last observed optically, by Holmes/CTIO at 7.36 LD inbound, V=18.7 reported
07312012 HE2 last observed optically, by Holmes/CTIO at 11.77 LD inbound, V=19.9 reported
06072012 GP1 closest Earth approach = 8.96 LD
05132012 HQ last observed optically, by Holmes/CTIO at 16.75 LD inbound, V=19.5 reported
20 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
22152012 GW11 exits 10-LD bubble61002338discovery MPEC issued for 2012 HG2
19072012 HM13 exits Earth's Hill sphere71002334discovery MPEC issued for 2012 HE2
08542012 HG2 observed first, by CSS at 2.24 LD, V=16.3 reported, elon. 161.5°
07502012 HE2 observed first, by CSS at 13.60 LD, V=19.1 reported, elon. 166.7°
19 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
23422012 HD25 exits 10-LD bubble72001931discovery MPEC issued for 2012 HN1
17162012 HM13 exits Earth-Moon system820011392012 HM13 closest Earth approach = 0.73 LD
06022012 HM13 enters Earth-Moon system820108492012 HD25 closest Earth approach = 9.73 LD
01392012 HE enters 10-LD bubble820008262012 GY11 last observed optically, by ARO Westfield at 11.94 LD outbound, V=19.6 reported
06232012 HM13 closest lunar approach = 1.49 LD
03572007 HV4 closest Earth approach = 4.76 LD - Note: JPL reports an approach uncertainty of +/- one day, 17 hours, and 57 minutes.
18 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
17562012 HD25 enters 10-LD bubble720016132012 GW11 closest Earth approach = 4.94 LD
04112012 HM13 enters Earth's Hill sphere620004112012 GW11 last observed optically, by ARO Westfield at 5.30 LD inbound, V=18.9 reported
0029discovery MPEC issued for 2012 HQ
17 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
05082012 GY11 exits 10-LD bubble610023182012 HG2 closest Earth approach = 1.19 LD
01342012 GP1 enters 10-LD bubble710017362012 HG2 closest lunar approach = 2.07 LD
1444discovery MPEC issued for 2012 HN
1442discovery MPEC issued for 2012 HM
10132012 HN1 observed first, by CSS at 7.09 LD, V=19.7 reported, elon. 142.2°
08562012 DN31 last observed optically, by ARO Westfield at 82.94 LD outbound, V=22.1 reported
0026discovery MPEC issued for 2012 HE
16 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
10132012 GW11 enters 10-LD bubble61001801discovery MPEC issued for 2012 GY11
01302012 HM13 enters 10-LD bubble51001757discovery MPEC issued for 2012 GW11
09452012 HQ observed first, by PS1 at 35.91 LD, w=21.0 reported, elon. 172.0°
08152012 HN observed first, by PS1 at 19.22 LD, g=20.0 reported, elon. 134.0°
07582012 HE observed first, by CSS at 14.63 LD, V=19.3 reported, elon. 148.6°
07012012 HM observed first, by LINEAR at 17.45 LD, mag 18.5 reported, elon. 139.3°
06332012 FM35 last observed optically, by Spacewatch 1.8m at 21.05 LD outbound, R=21.4 reported
15 April 2012
UTEvents
06262012 GY11 received designation via CSS at 9.10 LD outbound, V=19.0 reported, elon. 149.9°
05222012 GY11 observed first, by CSS at 9.09 LD outbound, V=19.2 reported, elon. 149.4°
14 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
19402007 HV4 enters 10-LD bubble410014062012 GY11 closest Earth approach = 9.03 LD
08342012 HN1 enters 10-LD bubble310008072012 GW11 observed first, by PS1 at 17.50 LD, w=20.5 reported, elon. 165.9°
13 April 2012
UTBoundary Transitions<10<HSM<1E<1
05542012 HG2 enters Earth's Hill sphere2100
01352012 HN exits 10-LD bubble2000
12 April 2012
UTEvents
2139discovery MPEC issued for 2012 GP1
11 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
22412012 GD exits 10-LD bubble300006032012 GP1 observed first, by CSS at 13.98 LD, V=20.0 reported, elon. 160.4°
22362012 GY11 enters 10-LD bubble4000
10 April 2012
UTEvents
19172012 HN closest Earth approach = 6.80 LD
08352012 GD closest Earth approach = 9.41 LD
9 April 2012
UTBoundary Transitions<10<HSM<1E<1
17252012 FA57 exits 10-LD bubble3000
15082012 HC25 exits 10-LD bubble4000
8 April 2012
UTBoundary Transitions<10<HSM<1E<1
18362012 GD enters 10-LD bubble5000
14172012 FS35 exits 10-LD bubble4000
12532012 HN enters 10-LD bubble5000
03492012 FH58 exits 10-LD bubble4000
6 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
16592012 FA57 exits Earth's Hill sphere500007012012 GD last observed optically, by ARO Westfield at 12.82 LD inbound, V=20.4 reported
16532012 EG5 exits 10-LD bubble5100
5 April 2012
UTBoundary Transitions<10<HSM<1E<1
06032012 HG2 enters 10-LD bubble6100
4 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
16342012 FV23 exits 10-LD bubble510021442012 FA57 closest Earth approach = 1.15 LD
12332012 FH58 exits Earth's Hill sphere610009382012 FA57 closest lunar approach = 1.56 LD
11572012 FQ62 exits 10-LD bubble6200
02212012 FS52 exits 10-LD bubble7200
3 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
18312012 FT35 exits 10-LD bubble820021142012 FH58 closest Earth approach = 3.63 LD
17112012 FW35 exits 10-LD bubble920018412012 EG5 last observed optically, by Lister/Faulkes South at 4.53 LD outbound, R=19.5 reported, elon. 66.2°
10272012 EG5 exits Earth's Hill sphere1020009002012 HC25 closest Earth approach = 7.29 LD - Note: JPL reports an approach uncertainty of +/- 2 hours and 19 minutes.
05562012 FH58 enters Earth's Hill sphere1030004542012 GE last observed optically, by Holmes/CTIO at 13.85 LD outbound, V=20.3 reported
02262012 FA57 enters Earth's Hill sphere1020004182012 FA57 last observed optically, by Spacewatch 1.8m at 3.74 LD inbound, R=19.1 reported
2 April 2012
UTEvents
20402012 FS52 closest Earth approach = 8.86 LD
2016discovery MPEC issued for 2012 GE
2015discovery MPEC issued for 2012 GD
2007discovery MPEC issued for 2012 FA71
19532012 FQ62 closest Earth approach = 5.65 LD
11322012 FA71 last observed optically, by Spacewatch 1.8m at 57.74 LD outbound, R=20.8 reported
10082012 FQ62 last observed optically, by ARO Westfield at 5.99 LD inbound, V=20.0 reported
04102012 FH58 last observed optically, by ARO Westfield at 5.21 LD inbound, V=19.0 reported
1 April 2012
UTBoundary Transitions<10<HSM<1E<1Events
19402012 EG5 exits Earth-Moon system1010017212012 FW35 closest Earth approach = 8.33 LD
18372012 FM35 exits 10-LD bubble1010109322012 EG5 closest Earth approach = 0.60 LD
15012012 FS52 enters 10-LD bubble1110109122012 GE observed first, by MLS at 9.66 LD, V=19.4 reported, elon. 168.6°
12482012 GE exits 10-LD bubble1010108152012 GD observed first, by MLS at 21.63 LD, V=20.9 reported, elon. 170.4°
03492012 FQ62 enters 10-LD bubble111010311discovery MPEC issued for 2012 FQ62
02462012 EG5 more than one LD from Moon10101

[ main | top | previous date ]

http://www.HohmannTransfer.com/busy/timeline/12/04.htm
Publisher info, privacy & disclaimer
This page is © Copyright 2008-2013 Columbine of Maine - All Rights Reserved
Do NOT copy, mirror, or embed this Web page, which is subject to frequent change, but please do link to it and let others know about it. Individuals may make snapshot copies for their own personal offline use.
Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com>.