<10=less than 10 LD from Earth

EBN Timeline for January 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

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31 Jan. 2012
UTEvents
22162012 CU closest Earth approach = 2.41 LD
1923discovery MPEC issued for 2012 BA102
30 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
16092012 CU enters Earth's Hill sphere410022102012 BD14 closest Earth approach = 5.79 LD
05072012 BA102 observed first, by LINEAR at 6.45 LD, mag 18.7 reported, elon. 170.8°
01112012 BD14 last observed optically, by ARO Westfield at 5.96 LD inbound, V=19.1 reported
29 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
23242012 BW13 exits 10-LD bubble400010502012 BA77 last observed optically, by Tholen team/Mauna Kea at 49.62 LD outbound, R=21.5 reported
11222012 BX34 exits Earth's Hill sphere500010162012 BF27 last observed optically, by Spacewatch 1.8m at 26.64 LD outbound, V=21.52 calculated
09532011 CP4 observed first, by ARO Westfield at 175.33 LD inbound, V=21.1 reported, elon. 122.6°
28 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
16322012 BS1 exits 10-LD bubble51001215discovery MPEC issued for 2012 BA77
10062012 BA102 exits Earth's Hill sphere610000432012 BX34 closest lunar approach = 0.76 LD
07552012 BX34 more than one LD from Moon6200
02262012 BX34 exits Earth-Moon system6210
27 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
22422012 CU enters 10-LD bubble62112017discovery MPEC issued for 2012 BV61
17342012 BX34 within one LD of Moon521115242012 BX34 closest Earth approach = 0.17 LD
13402012 BW13 exits Earth's Hill sphere520113402012 BX34 last observed optically, by CSS at 0.23 LD inbound, V=13.98 calculated
04222012 BX34 enters Earth-Moon system530107502012 BX34 first observed by radar, from DSS-14 (transmit) & DSS-13 (receive) at 0.70 LD inbound, V=15.89 calculated
02292012 BD14 first observed by radar, from Arecibo at 8.45 LD inbound, V=19.79 calculated
26 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
17302012 BY1 exits 10-LD bubble530017122012 BA102 closest Earth approach = 2.63 LD
1527discovery MPEC issued for 2012 BX34
10002012 BV61 observed first, by CSS at 11.16 LD, V=19.8 reported, elon. 126.7°
09332012 BW13 closest lunar approach = 2.55 LD
08552011 YH40 last observed optically, by Holmes/CTIO at 20.39 LD outbound, V=19.7 reported, elon. 69.1°
06022012 BW13 closest Earth approach = 1.73 LD
25 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
21032012 BD14 enters 10-LD bubble630010242012 BU1 last observed optically, by Spacewatch 1.8m at 23.37 LD outbound, V=22.10 calculated
19272012 BX34 enters Earth's Hill sphere530010212012 BX34 observed first, by CSS at 4.69 LD, V=19.9 reported, elon. 126.2°
11432012 BV1 exits 10-LD bubble520007212012 BX1 last observed optically, by ARO Westfield at 26.24 LD outbound, V=19.5 reported
03592012 BY1 exits Earth's Hill sphere6200
03442012 BV61 exits 10-LD bubble6300
01412012 BS1 exits Earth's Hill sphere7300
00132012 BA102 enters Earth's Hill sphere7400
24 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
22252012 BW13 enters Earth's Hill sphere730021272012 BW13 last observed optically, by Paus Obs. at 3.99 LD inbound, R=18.1 reported
01442012 BF27 exits 10-LD bubble720013302012 BY1 closest lunar approach = 2.34 LD
1221discovery MPEC issued for 2012 BF27
08482012 BA77 observed first, by PS1 at 34.31 LD, w=21.9 reported, elon. 165.5°
08472012 BY1 closest Earth approach = 2.04 LD
03062012 BZ13 last observed optically, by Holmes/CTIO at 14.21 LD outbound, V=20.2 reported
02352012 BY1 last observed optically, by Great Shefford Obs. at 2.31 LD inbound, R=16.4 reported
23 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
13362012 BY1 enters Earth's Hill sphere820021292012 BS1 closest Earth approach = 3.12 LD
08052012 BF27 observed first, by CSS at 7.77 LD, V=18.8 reported, elon. 140.8°
22 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
21562012 BX34 enters 10-LD bubble8100
17472012 BK14 exits 10-LD bubble7100
17192012 BS1 enters Earth's Hill sphere8100
17182012 AQ10 exits 10-LD bubble8000
12482012 BW13 enters 10-LD bubble9000
06422012 BV1 exits Earth's Hill sphere8000
05512012 BL14 exits 10-LD bubble8100
00092012 BF27 exits Earth's Hill sphere9100
00072012 BY1 enters 10-LD bubble9200
21 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
04332012 BV1 more than one LD from Moon82001517discovery MPEC issued for 2012 BL14
1515discovery MPEC issued for 2012 BK14
1404discovery MPEC issued for 2012 BD14
1402discovery MPEC issued for 2012 BC14
1356discovery MPEC issued for 2012 BZ13
1352discovery MPEC issued for 2012 BW13
11502012 BL14 last observed optically, by MLS at 6.68 LD outbound, V=19.9 reported
11212012 BS1 last observed optically, by Spacewatch 1.8m at 5.73 LD inbound, V=20.00 calculated
11172012 BC14 last observed optically, by MLS at 60.08 LD outbound, V=21.5 reported
11102012 BK14 last observed optically, by Spacewatch 1.8m at 8.59 LD outbound, V=20.03 calculated
08582012 BL14 observed first, by MLS at 6.15 LD, V=19.9 reported, elon. 165.9°
07362012 BK14 observed first, by CSS at 8.43 LD, V=20.2 reported, elon. 164.7°
20 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
23052012 BA102 enters 10-LD bubble821021572012 BF27 closest Earth approach = 1.90 LD
22092012 BZ13 exits 10-LD bubble72102134discovery MPEC issued for 2012 BO11
20262012 BL14 exits Earth's Hill sphere821017472012 BV1 closest lunar approach = 0.55 LD
20252011 YH40 exits 10-LD bubble831017362012 BF27 closest lunar approach = 1.13 LD
14112012 BV1 exits Earth-Moon system931007132012 BV1 closest Earth approach = 0.83 LD
06562012 BV1 within one LD of Moon931107122012 BD14 observed first, by MLS at 18.30 LD, V=20.8 reported, elon. 176.1°
00152012 BV1 enters Earth-Moon system930105002012 AP10 last observed optically, by Spacewatch 1.8m at 16.78 LD outbound, V=21.64 calculated
04572012 BC14 observed first, by MLS at 56.17 LD, V=22.0 reported, elon. 167.6°
04412012 BZ13 observed first, by CSS at 9.47 LD, V=17.7 reported, elon. 175.2°
00332012 BL14 closest Earth approach = 1.20 LD - Note: JPL reports an approach uncertainty of +/- 14 minutes.
19 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
19452012 BF27 enters Earth's Hill sphere93002145discovery MPEC issued for 2012 BY1
04402012 BL14 enters Earth's Hill sphere92002143discovery MPEC issued for 2012 BX1
02562012 BS1 enters 10-LD bubble91002141discovery MPEC issued for 2012 BV1
00132012 BO11 exits 10-LD bubble81002139discovery MPEC issued for 2012 BU1
2137discovery MPEC issued for 2012 BT1
2134discovery MPEC issued for 2012 BS1
21072012 BL14 closest lunar approach = 1.86 LD
11482012 BO11 observed first, by CSS at 10.78 LD, V=19.3 reported, elon. 139.9°
11162012 BV1 last observed optically, by MLS at 1.80 LD inbound, V=19.9 reported
08102012 BT1 last observed optically, by MLS at 10.94 LD outbound, V=19.8 reported
04582012 BW13 observed first, by MLS at 18.80 LD, V=20.5 reported, elon. 167.5°
18 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
22532012 BU1 exits 10-LD bubble910023022012 BZ13 closest Earth approach = 9.10 LD
13132012 AQ10 exits Earth's Hill sphere1010009212012 BY1 observed first, by MLS at 24.94 LD, V=20.0 reported, elon. 175.4°
07472012 BV1 enters Earth's Hill sphere1020008412012 BX1 observed first, by CSS at 11.37 LD, V=18.0 reported, elon. 151.0°
08202012 BV1 observed first, by MLS at 3.85 LD, V=21.1 reported, elon. 178.8°
07412012 BU1 observed first, by MLS at 8.78 LD, V=19.7 reported, elon. 177.0°
07402012 BT1 observed first, by MLS at 10.26 LD, V=20.1 reported, elon. 178.3°
06552012 BS1 observed first, by MLS at 11.60 LD, V=21.1 reported, elon. 179.9°
17 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
20342012 BT1 exits 10-LD bubble1010006022012 AQ10 last observed optically, by Holmes/CTIO at 2.51 LD outbound, V=18.6 reported
19152012 BL14 enters 10-LD bubble11100
18122012 BF27 enters 10-LD bubble10100
11502012 BX1 exits 10-LD bubble9100
16 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
23482012 BZ13 enters 10-LD bubble1010021342012 AQ10 closest lunar approach = 2.08 LD
18352012 BV61 closest Earth approach = 4.90 LD
17362011 YH40 closest Earth approach = 5.36 LD
12522012 AQ10 closest Earth approach = 2.24 LD
05342012 AW10 last observed optically, by ARO Westfield at 16.54 LD outbound, V=20.0 reported
15 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
03382012 BU1 exits Earth's Hill sphere910009212012 BK14 closest Earth approach = 4.25 LD - Note: JPL reports an approach uncertainty of +/- one day, 8 hours, and 36 minutes.
02582012 BV1 enters 10-LD bubble920009172012 BT1 closest Earth approach = 9.35 LD
05202011 YH40 last observed by radar, from DSS-14 at 6.20 LD inbound, V=14.90 calculated
04302011 YH40 first observed by radar, from DSS-14 at 6.24 LD inbound, V=14.90 calculated
00522012 BX1 closest Earth approach = 8.07 LD
14 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
12372012 AQ10 enters Earth's Hill sphere82002211discovery MPEC issued for 2012 AW10
10222012 BA77 exits 10-LD bubble810011522012 BU1 closest Earth approach = 3.64 LD
08562012 AW10 observed first, by CSS at 12.09 LD, V=19.0 reported, elon. 161.3°
13 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
20062012 BU1 enters Earth's Hill sphere91002159discovery MPEC issued for 2012 AQ10
14142012 AQ exits 10-LD bubble900018152012 BO11 closest Earth approach = 3.94 LD
11312012 AW10 exits 10-LD bubble1000006392012 AQ10 observed first, by CSS at 5.63 LD, V=17.9 reported, elon. 150.5°
06092012 BA77 closest Earth approach = 9.39 LD - Note: JPL reports an approach uncertainty of +/- 6 minutes.
12 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
21272012 BT1 enters 10-LD bubble11000
15262011 YH40 enters 10-LD bubble10000
13412012 BX1 enters 10-LD bubble9000
01552012 BA77 enters 10-LD bubble8000
11 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
22062012 AP10 exits 10-LD bubble70001305discovery MPEC issued for 2012 AP10
02002012 AP10 observed first, by MLS at 9.32 LD, V=19.4 reported, elon. 131.0°
10 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
09532012 AW10 exits Earth's Hill sphere8000
09252012 AQ10 enters 10-LD bubble8100
00332012 BU1 enters 10-LD bubble7100
9 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
18042011 YL28 exits 10-LD bubble610015362012 AW10 closest Earth approach = 3.41 LD
8 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
21182012 AW10 enters Earth's Hill sphere7100
13112012 BO11 enters 10-LD bubble7000
08352012 BV61 enters 10-LD bubble6000
00072012 BK14 enters 10-LD bubble5000
7 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
17362011 YB63 exits 10-LD bubble4000
5 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1
19372012 AW10 enters 10-LD bubble5000
01172011 YL28 exits Earth's Hill sphere4000
4 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
11112011 YB63 exits Earth's Hill sphere410008212011 YL28 closest Earth approach = 3.70 LD
08422012 AP10 exits Earth's Hill sphere4200
08422011 YD29 exits 10-LD bubble4300
03322012 AQ exits Earth's Hill sphere5300
3 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
15252011 YL28 enters Earth's Hill sphere540020392011 YL28 last observed optically, by Great Shefford Obs. at 3.79 LD inbound, R=18.2 reported, elon. 88.5°
10442012 BC14 exits 10-LD bubble530009552012 AQ last observed optically, by Spacewatch 1.8m at 3.42 LD outbound, V=21.62 calculated
0118discovery MPEC issued for 2012 AQ
0116discovery MPEC issued for 2011 YC63
0114discovery MPEC issued for 2011 YB63
2 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
20182011 YB63 exits Earth-Moon system630010142011 YB63 closest Earth approach = 0.61 LD
06542011 YB63 more than one LD from Moon630100092011 YB63 closest lunar approach = 0.82 LD
00092011 YB63 enters Earth-Moon system6311
1 Jan. 2012
UTBoundary Transitions<10<HSM<1E<1Events
17252011 YB63 within one LD of Moon631008032011 YX15 last observed optically, by ARO Westfield at 12.10 LD outbound, V=19.5 reported
13172011 WS95 exits 10-LD bubble630007462011 YC63 last observed optically, by MLS at 9.41 LD outbound, V=21.3 reported
11072011 YC63 exits 10-LD bubble730006082011 YD29 last observed optically, by ARO Westfield at 6.86 LD outbound, V=19.9 reported
03522011 YE29 exits 10-LD bubble830005522012 AQ observed first, by MLS at 2.06 LD, V=20.8 reported, elon. 156.6°
02512011 YC40 exits 10-LD bubble930005432011 YB63 last observed optically, by MLS at 2.32 LD inbound, V=20.8 reported
05102011 YE40 last observed optically, by Holmes/CTIO at 10.91 LD outbound, V=19.0 reported
04582011 YE29 last observed optically, by Holmes/CTIO at 10.10 LD outbound, V=19.3 reported
04512012 BC14 closest Earth approach = 7.71 LD - Note: JPL reports an approach uncertainty of +/- 16 hours and one minute.

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