<10=less than 10 LD from Earth

EBN Timeline for April 2018

<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)
25 April 2018
UTBoundary Transitions<10<SIM<1E<1
10092018 HT exits 10-LD bubble0000
24 April 2018
UTBoundary Transitions<10<SIM<1E<1
21442018 GE exits 10-LD bubble1000
13372018 HN exits 10-LD bubble2000
09172018 GG4 exits 10-LD bubble3000
23 April 2018
UTEvents
16282018 GG4 closest Earth approach = 9.72 LD
22 April 2018
UTBoundary Transitions<10<SIM<1E<1
23392018 GG4 enters 10-LD bubble4000
10142018 HS exits 10-LD bubble3000
21 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
17562018 GS3 exits 10-LD bubble400020072018 HN closest Earth approach = 7.99 LD
12312018 HU exits 10-LD bubble50001933discovery MPEC issued for 2018 HT
11022018 GC2 exits 10-LD bubble60001929discovery MPEC issued for 2018 HS
01022018 GK4 exits 10-LD bubble70001925discovery MPEC issued for 2018 HU
00422018 GD5 exits 10-LD bubble800015012018 HU last observed optically, by JAXA STCC at 10.14 LD outbound, R=19.3 reported
14102018 HS last observed optically, by JAXA STCC at 7.18 LD outbound, R=18.6 reported
09552018 GE last observed optically, by Spacewatch 1.8m at 8.67 LD outbound, R=21.1 reported
09322018 GS5 last observed optically, by Spacewatch 1.8m at 48.86 LD outbound, R=22.1 reported
08442018 GG4 last observed optically, by Steward Mt. Lemmon Sta. at 12.47 LD inbound, G=19.8 reported
08372018 EJ4 last observed optically, by Steward Mt. Lemmon Sta. at 66.70 LD inbound, G=19.3 reported
07052018 HT last observed optically, by Steward Mt. Lemmon Sta. at 7.09 LD outbound, G=19.6 reported
06382018 HT closest Earth approach = 7.09 LD
06262018 GE2 last observed optically, by Steward Mt. Lemmon Sta. at 15.60 LD outbound, G=19.1 reported
02422018 HN last observed optically, by Dettelbach Vineyard Obs. at 8.15 LD inbound, G=18.4 reported
20 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
05512018 HM exits 10-LD bubble90001537discovery MPEC issued for 2018 HM
1530discovery MPEC issued for 2018 HO
1526discovery MPEC issued for 2018 HN
13372018 GS3 closest Earth approach = 8.52 LD
09462018 HS closest Earth approach = 5.12 LD
08152018 HO last observed optically, by Farpoint Obs. at 10.41 LD outbound, R=20.1 reported
07442018 HU designation credited to CSS at 8.67 LD outbound, G=18.3 reported, elon. 144.3°
07222018 HM last observed optically, by Steward Mt. Lemmon Sta. at 10.13 LD outbound, G=21.1 reported
05041999 FN19 last observed optically, by CSS at 23.79 LD inbound, G=18.7 reported
0314388945 2008 TZ3 last observed optically, by Squirrel Valley Obs. at 40.70 LD inbound, G=16.6 reported
19 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
17072018 HO exits 10-LD bubble1000009262018 HT designation credited to MLS at 7.79 LD inbound, G=19.1 reported, elon. 167.8°
09192018 GS3 enters 10-LD bubble1100009222018 HS designation credited to CSS at 6.70 LD inbound, G=18.6 reported, elon. 117.0°
02562018 HN enters 10-LD bubble1000008452018 FN3 last observed optically, by Holmes/CTIO at 51.96 LD outbound, G=22.2 reported
07382015 DP155 last observed optically, by CSS at 46.46 LD inbound, G=19.0 reported
05452018 GS3 last observed optically, by Steward Mt. Lemmon Sta. at 10.36 LD inbound, G=19.3 reported
05242018 GC2 last observed optically, by Steward Mt. Lemmon Sta. at 9.18 LD outbound, G=19.6 reported
18 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
12022018 GD2 exits 10-LD bubble900017562018 HU closest Earth approach = 7.96 LD
09162018 HS enters 10-LD bubble100001747discovery MPEC issued for 2018 HD
08542018 GV1 exits 10-LD bubble90001727discovery MPEC issued for 2018 GS5
01572014 UR exits 10-LD bubble1000011382018 GZ last observed optically, by Spacewatch 1.8m at 10.35 LD outbound, R=21.6 reported
00412018 GP exits 10-LD bubble1100008282018 HD last observed optically, by MRO at 13.26 LD outbound, G=20.4 reported
08212018 HO designation credited to MLS at 9.20 LD outbound, G=20.2 reported, elon. 126.9°
08142018 HN designation credited to CSS at 11.13 LD inbound, G=18.0 reported, elon. 163.0°
07442018 HM designation credited to MLS at 6.26 LD outbound, G=20.8 reported, elon. 128.1°
17 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
22462018 GZ exits 10-LD bubble1200016582018 GK4 closest Earth approach = 5.87 LD
05552018 GE2 exits 10-LD bubble1300011222018 GU1 last observed optically, by Steward Mt. Lemmon Sta. at 31.48 LD outbound, G=21.0 reported
03542018 HT enters 10-LD bubble1400011162018 GC2 closest Earth approach = 8.97 LD
16 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
18482018 GE3 exits 10-LD bubble130001658discovery MPEC issued for 2018 GD5
08372018 HD designation credited to MLS at 11.19 LD outbound, G=19.8 reported, elon. 170.7°
08122018 GD5 last observed optically, by Steward Mt. Lemmon Sta. at 4.69 LD outbound, G=20.0 reported
0548distant 2003 FY6 last observed optically, by MLS at 68.02 LD, G=20.6 reported
15 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
23022018 HU enters 10-LD bubble140001616discovery MPEC issued for 2018 GK4
15102018 GE3 exits Earth SOI130001602discovery MPEC issued for 2018 GG4
13242018 GE3 more than one LD from Moon131001551discovery MPEC issued for 2018 GD4
09482018 GE3 exits Earth-Moon system1311015472018 HM closest Earth approach = 2.85 LD
06322018 GE3 within one LD of Moon131111511discovery MPEC issued for 2018 GY3
03322018 GE3 enters Earth-Moon system131011511discovery MPEC issued for 2018 GY3
1441discovery MPEC issued for 2018 GS3
14092018 GK4 last observed optically, by JAXA STCC at 7.81 LD inbound, R=18.9 reported
10002018 GN1 last observed optically, by MLS at 11.11 LD outbound, G=21.0 reported
09582018 GE3 closest lunar approach = 0.34 LD
09052018 GS5 designation credited to MLS at 34.07 LD outbound, G=21.1 reported, elon. 166.8°
08522018 GW1 last observed optically, by Steward Mt. Lemmon Sta. at 17.22 LD outbound, G=20.3 reported
07352018 GY3 last observed optically, by Spacewatch 0.9m at 12.94 LD outbound, V=21.12 calculated
06422018 GD4 last observed optically, by MLS at 41.59 LD outbound, G=23.2 reported
06402018 GE3 closest Earth approach = 0.50 LD
0555distant 2017 DC36 last observed optically, by Spacewatch 0.9m at 91.81 LD, V=20.4 reported
01132018 GE3 last observed optically, by Great Shefford Obs. at 1.59 LD inbound, G=13.9 reported
14 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
22102018 GE3 enters Earth SOI131002320discovery MPEC issued for 2018 GE3
20202018 GN1 exits 10-LD bubble130001202discovery MPEC issued for 2018 FL29
20032018 HD exits 10-LD bubble140001202discovery MPEC issued for 2018 EA10
17522018 GG exits 10-LD bubble1500009362018 GD5 designation credited to MLS at 3.64 LD outbound, G=19.1 reported, elon. 145.5°
09172018 GK4 enters 10-LD bubble1600009232018 GE3 designation credited to CSS at 5.91 LD inbound, G=15.6 reported, elon. 158.7°
03322018 GY3 exits 10-LD bubble1500008522018 GK4 designation credited to CSS at 10.03 LD inbound, G=18.6 reported, elon. 175.7°
00212018 GD2 exits Earth SOI160000743distant 2012 SR56 last observed optically, by Steward Mt. Lemmon Sta. at 46.26 LD, G=21.1 reported
06402014 UR closest Earth approach = 9.24 LD
0506distant 2012 SR56 observed first, by MLS at 46.41 LD, G=20.5 reported, elon. 137.7°
03212018 GD5 closest Earth approach = 3.62 LD
13 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
18332018 GE3 enters 10-LD bubble1610023102018 GV1 closest Earth approach = 4.80 LD
11492018 GC2 enters 10-LD bubble1510014032018 GV1 last observed optically, by Mt. John Obs. at 4.86 LD inbound, R=18.3 reported
08072018 GD2 more than one LD from Moon1410013442018 GP last observed optically, by Mt. John Obs. at 4.37 LD outbound, R=18.4 reported
01212018 GD2 exits Earth-Moon system141101121discovery MPEC issued for 2018 GE2
11032018 GP closest Earth approach = 4.36 LD
10302018 GG4 designation credited to PS1 at 36.19 LD inbound, w=21.8 reported, elon. 171.2°
10062018 GK4 observed first, by PS1 at 12.00 LD inbound, V=19.08 calculated, elon. 175.8°
09212018 EF4 last observed optically, by R. Wainscoat/Mauna Kea at 48.10 LD outbound, G=23.4 reported
08442018 GY3 designation credited to PS1 at 8.04 LD outbound, w=20.3 reported, elon. 164.9°
07342018 FE3 last observed optically, by Tholen 2.24m at 35.32 LD outbound, G=24.37 reported
00372018 GD2 closest lunar approach = 0.86 LD
12 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
21462018 GW1 exits 10-LD bubble1411122222018 HO closest Earth approach = 7.56 LD
17062018 GD2 within one LD of Moon151111836discovery MPEC issued for 2018 GD2
08022018 GD2 enters Earth-Moon system151011829discovery MPEC issued for 2018 GC2
1800discovery MPEC issued for 2018 GW1
1756discovery MPEC issued for 2018 GU1
1752discovery MPEC issued for 2018 GV1
16412018 GD2 closest Earth approach = 0.78 LD
1458distant 450894 2008 BT18 last observed optically, by ATLAS Haleakala at 55.44 LD, o=16.0 reported, elon. 89.1°
11002018 GD2 last observed optically, by MLS at 0.88 LD inbound, G=17.9 reported
1022discovery MPEC issued for 2018 GN1
10192018 GS3 designation credited to PS1 at 37.43 LD inbound, w=21.6 reported, elon. 176.2°
06462018 HD closest Earth approach = 9.16 LD
11 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
17122018 GN exits 10-LD bubble1510021572018 GG closest Earth approach = 4.68 LD
11082018 GE2 exits Earth SOI1610009222018 GE3 observed first, by CSS at 25.83 LD inbound, V=19.03 calculated, elon. 159.6°
09022018 GD2 enters Earth SOI1620009142018 GD2 designation credited to MLS at 2.39 LD outbound, G=20.1 reported, elon. 142.1°
04172018 GU1 exits 10-LD bubble1610008202018 GG last observed optically, by Tholen 2.24m at 5.00 LD inbound, G=19.71 reported, elon. 82.9°
02042018 GY3 exits Earth SOI1710008142018 GW1 designation credited to CSS at 5.87 LD outbound, G=17.7 reported, elon. 174.7°
01302018 HM enters 10-LD bubble1720007212018 GD4 designation credited to MLS at 29.87 LD outbound, G=21.2 reported, elon. 157.2°
07122018 GV1 designation credited to CSS at 7.18 LD inbound, G=19.2 reported, elon. 162.3°
06122018 GC2 designation credited to MLS at 11.32 LD inbound, G=20.2 reported, elon. 152.2°
10 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
13502018 GN1 exits Earth SOI162001356discovery MPEC issued for 2018 GZ
11072014 UR enters 10-LD bubble1630009572018 GU1 designation credited to CSS at 7.43 LD outbound, V=17.65 calculated, elon. 126.7°
10182018 GY3 exits Earth-Moon system1530009502018 GE2 designation credited to PTF at 1.49 LD outbound, R=16.54 reported, elon. 108.5°
01412018 GN exits Earth SOI1530105542018 GN1 designation credited to PTF at 2.11 LD outbound, R=17.71 reported, elon. 121.3°
04222018 GY3 closest Earth approach = 0.78 LD
0154discovery MPEC issued for 2018 GP
00582018 GE2 closest Earth approach = 1.41 LD
00422018 GY3 closest lunar approach = 1.60 LD
00242018 GN1 closest lunar approach = 2.73 LD
9 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
22272018 GY3 enters Earth-Moon system1540121322018 GN1 closest Earth approach = 2.00 LD
17092018 HD enters 10-LD bubble1540021152018 GW1 closest Earth approach = 3.83 LD
14042018 GV1 enters 10-LD bubble1440021022018 GE2 closest lunar approach = 1.24 LD
06402018 GY3 enters Earth SOI1340016472018 GN closest lunar approach = 1.68 LD
05142018 GN1 enters Earth SOI1330014542018 GN closest Earth approach = 1.12 LD
04082018 GN enters Earth SOI132000733distant 2007 DB61 last observed optically, by MLS at 48.96 LD, G=20.7 reported
01572018 GG enters 10-LD bubble1310007052018 GN last observed optically, by Steward Mt. Lemmon Sta. at 1.91 LD inbound, G=16.0 reported
0323discovery MPEC issued for 2018 GN
8 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
21372018 GP enters 10-LD bubble1210008032018 GN designation credited to CSS at 6.20 LD inbound, G=17.6 reported, elon. 166.3°
19142018 GU1 exits Earth SOI1110007482018 GU1 closest lunar approach = 1.03 LD
14492018 GE2 enters Earth SOI1120007352018 GZ designation credited to MLS at 3.76 LD outbound, G=19.5 reported, elon. 132.0°
07192018 GU1 closest Earth approach = 1.70 LD
0335distant 2016 SR2 last observed optically, by Spacewatch 1.8m at 25.28 LD, V=22.32 calculated
03282018 GP designation credited to MLS at 11.36 LD inbound, G=21.4 reported, elon. 121.9°
7 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
19252018 GU1 enters Earth SOI111002119discovery MPEC issued for 2018 GG
12372018 GN enters 10-LD bubble11000
05092018 GD5 enters 10-LD bubble10000
6 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
21342018 GD2 enters 10-LD bubble90001018discovery MPEC issued for 2018 GE
20352018 GW1 enters 10-LD bubble800007132018 GG designation credited to CSS at 18.14 LD inbound, G=19.2 reported, elon. 140.7°
20022018 EM4 exits 10-LD bubble700001532018 FP5 last observed optically, by Holmes/CTIO at 44.94 LD outbound, V=22.4 reported
05132018 GY3 enters 10-LD bubble8000
04202018 HO enters 10-LD bubble7000
01072018 GZ exits Earth SOI6000
5 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
23432018 FW4 exits 10-LD bubble610010112018 GE designation credited to MLS at 4.14 LD outbound, G=19.6 reported, elon. 95.3°
10212018 GU1 enters 10-LD bubble710006142018 FW last observed optically, by Holmes/CTIO at 50.41 LD outbound, G=21.6 reported
07202004 FG29 exits 10-LD bubble610004242018 FM3 last observed optically, by ARO Westfield at 20.91 LD outbound, V=22.2 reported
02272018 FW4 closest Earth approach = 9.73 LD
4 April 2018
UTBoundary Transitions<10<SIM<1E<1
22362018 GN1 enters 10-LD bubble7100
05112018 FW4 enters 10-LD bubble6100
3 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
19252018 GS5 exits 10-LD bubble510013372018 GE closest Earth approach = 4.06 LD
13332018 GD4 exits 10-LD bubble610010052018 GZ closest lunar approach = 1.60 LD
12032018 FB exits 10-LD bubble710003442018 GZ closest Earth approach = 1.39 LD
11492018 FK5 exits 10-LD bubble8100
2 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
19582018 GE2 enters 10-LD bubble91001924discovery MPEC issued for 2018 FP5
09532018 FO4 exits 10-LD bubble810013442004 FG29 closest Earth approach = 4.00 LD - Note: JPL reports an approach uncertainty of +/- one hour and 2 minutes.
1 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
01262018 FQ1 exits 10-LD bubble910014022018 GD4 closest Earth approach = 8.14 LD
12002018 GS5 closest Earth approach = 8.42 LD - Note: JPL reports an approach to 8.42 LD (8.30 minimum) with an uncertainty of +/- 9 minutes.
05502018 EM4 closest Earth approach = 6.23 LD


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