<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)
26 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
18192018 HE2 exits 10-LD bubble10001520discovery MPEC issued for 2018 HE2
08142018 HE2 last observed optically, by MRO at 9.31 LD outbound, G=21.0 reported
06472018 EJ4 last observed optically, by Steward Mt. Lemmon Sta. at 60.65 LD inbound, G=20.7 reported
06242018 HY1 last observed optically, by Steward Mt. Lemmon Sta. at 10.44 LD outbound, G=18.2 reported
06192018 GE2 last observed optically, by Spacewatch 1.8m at 22.77 LD outbound, R=21.3 reported
04142018 HL1 last observed optically, by Steward Mt. Lemmon Sta. at 15.60 LD outbound, G=17.1 reported
03362018 HX1 last observed optically, by Steward Mt. Lemmon Sta. at 21.71 LD outbound, G=19.6 reported
25 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
13482018 HY1 exits 10-LD bubble200005472015 DP155 last observed optically, by PTF at 42.38 LD inbound, g=19.16 reported
12122018 HV exits 10-LD bubble300004382018 HU last observed optically, by Steward Mt. Lemmon Sta. at 16.19 LD outbound, G=19.8 reported
10092018 HT exits 10-LD bubble4000
24 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
21392018 GE exits 10-LD bubble50002223discovery MPEC issued for 2018 HW1
13372018 HN exits 10-LD bubble60002220discovery MPEC issued for 2018 HY1
09352018 GG4 exits 10-LD bubble70002216discovery MPEC issued for 2018 HX1
07342018 HL1 exits 10-LD bubble800018532018 HW1 last observed optically, by Lutkenhoner/iTelObs-SSO at 3.19 LD outbound, V=17.27 calculated
00432018 HX1 exits 10-LD bubble900014592018 GG4 last observed optically, by Tholen CFHT at 10.21 LD outbound, G=20.78 reported, elon. 96.2°
00242018 HW1 exits Earth SOI100001205discovery MPEC issued for 2018 HL1
0742388945 2008 TZ3 last observed optically, by CSS at 31.86 LD inbound, G=15.6 reported
05502018 HC1 last observed optically, by Steward Mt. Lemmon Sta. at 15.08 LD outbound, G=18.3 reported
23 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
09002018 HV exits Earth SOI1010018082018 HY1 closest Earth approach = 9.49 LD
16282018 GG4 closest Earth approach = 9.71 LD
08312018 GE last observed optically, by Spacewatch 1.8m at 9.41 LD outbound, R=21.7 reported
08202018 HE2 designation credited to CSS at 4.47 LD outbound, G=19.6 reported, elon. 151.6°
06172018 HY1 designation credited to MLS at 9.53 LD inbound, G=18.0 reported, elon. 164.3°
05112018 HX1 designation credited to PTF at 5.73 LD outbound, R=17.33 reported, elon. 117.1°
04512018 HW1 designation credited to SONEAR at 1.62 LD outbound, R=15.2 reported, elon. 137.2°
22 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
23212018 GG4 enters 10-LD bubble1020017452018 HV closest lunar approach = 1.34 LD
23132018 HV exits Earth-Moon system920017052018 HV closest Earth approach = 0.40 LD
18452018 HC1 exits 10-LD bubble92011610discovery MPEC issued for 2018 HC1
10572018 HV enters Earth-Moon system102011607discovery MPEC issued for 2018 HD1
10142018 HS exits 10-LD bubble1020011012018 HD last observed optically, by Spacewatch 1.8m at 18.59 LD outbound, R=21.3 reported
08482018 HW1 exits Earth-Moon system1120008392018 HD1 last observed optically, by MRO at 12.33 LD outbound, G=20.0 reported
01112018 HV enters Earth SOI1120107362018 HX1 closest Earth approach = 2.69 LD
07022018 HV last observed optically, by LCO Cerro Tololo C at 1.55 LD inbound, G=17.5 reported
0317discovery MPEC issued for 2018 HV
21 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
22232018 HY1 enters 10-LD bubble1110122522018 HW1 closest Earth approach = 0.89 LD
21432018 HE2 exits Earth SOI1010120072018 HN closest Earth approach = 7.99 LD
17562018 GS3 exits 10-LD bubble102011933discovery MPEC issued for 2018 HT
12562018 HW1 enters Earth-Moon system112011929discovery MPEC issued for 2018 HS
12302018 HU exits 10-LD bubble112001925discovery MPEC issued for 2018 HU
11022018 GC2 exits 10-LD bubble1220014132018 HW1 closest lunar approach = 1.75 LD
01022018 GK4 exits 10-LD bubble1320014102018 HS last observed optically, by JAXA STCC at 7.18 LD outbound, R=18.6 reported
00422018 GD5 exits 10-LD bubble1420013592018 HL1 closest Earth approach = 4.67 LD
00312018 HD1 exits 10-LD bubble1520009322018 GS5 last observed optically, by Spacewatch 1.8m at 48.86 LD outbound, R=22.1 reported
09262018 HL1 designation credited to PTF at 4.71 LD inbound, R=16.31 reported, elon. 125.0°
08502018 HD1 designation credited to MLS at 10.59 LD outbound, G=20.6 reported, elon. 157.8°
08182018 HV designation credited to MLS at 4.90 LD inbound, G=20.3 reported, elon. 157.2°
08172018 HC1 designation credited to CSS at 5.07 LD outbound, G=17.4 reported, elon. 172.8°
08102018 HL1 observed first, by PTF at 4.73 LD inbound, g=16.92 reported, elon. 123.0°
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
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
14292018 HX1 enters 10-LD bubble1620020492018 HE2 closest Earth approach = 1.67 LD
12392018 HC1 exits Earth SOI152001537discovery MPEC issued for 2018 HM
05512018 HM exits 10-LD bubble153001530discovery MPEC issued for 2018 HO
1526discovery MPEC issued for 2018 HN
13372018 GS3 closest Earth approach = 8.52 LD
09472018 HE2 closest lunar approach = 1.34 LD
09462018 HS closest Earth approach = 5.12 LD
08182018 GZ last observed optically, by ARO Westfield at 11.57 LD outbound, V=22.1 reported
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
19 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
21592018 HV enters 10-LD bubble1630022242018 HC1 closest Earth approach = 1.23 LD
21162018 HW1 enters Earth SOI1530017452018 HC1 closest lunar approach = 1.54 LD
19552018 HE2 enters Earth SOI1520009262018 HT designation credited to MLS at 7.79 LD inbound, G=19.1 reported, elon. 167.8°
17072018 HO exits 10-LD bubble1510009222018 HS designation credited to CSS at 6.70 LD inbound, G=18.6 reported, elon. 117.0°
09192018 GS3 enters 10-LD bubble1610008452018 FN3 last observed optically, by Holmes/CTIO at 51.96 LD outbound, G=22.2 reported
08092018 HC1 enters Earth SOI1510005452018 GS3 last observed optically, by Steward Mt. Lemmon Sta. at 10.36 LD inbound, G=19.3 reported
02562018 HN enters 10-LD bubble1500005242018 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
20152018 HL1 enters 10-LD bubble1400017572018 HU closest Earth approach = 7.97 LD
12022018 GD2 exits 10-LD bubble130001747discovery MPEC issued for 2018 HD
09162018 HS enters 10-LD bubble140001727discovery MPEC issued for 2018 GS5
08542018 GV1 exits 10-LD bubble1300008212018 HO designation credited to MLS at 9.20 LD outbound, G=20.2 reported, elon. 126.9°
01572014 UR exits 10-LD bubble1400008142018 HN designation credited to CSS at 11.13 LD inbound, G=18.0 reported, elon. 163.0°
00372018 GP exits 10-LD bubble1500007442018 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
22512018 GZ exits 10-LD bubble1600016582018 GK4 closest Earth approach = 5.87 LD
05522018 GE2 exits 10-LD bubble1700011222018 GU1 last observed optically, by Steward Mt. Lemmon Sta. at 31.48 LD outbound, G=21.0 reported
03542018 HT enters 10-LD bubble1800011162018 GC2 closest Earth approach = 8.97 LD
02012018 HC1 enters 10-LD bubble17000
16 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
18482018 GE3 exits 10-LD bubble1600022112018 HD1 closest Earth approach = 5.66 LD
1658discovery MPEC issued for 2018 GD5
08372018 HD designation credited to MLS at 11.20 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
23042018 HU enters 10-LD bubble170001616discovery MPEC issued for 2018 GK4
15102018 GE3 exits Earth SOI160001602discovery MPEC issued for 2018 GG4
13242018 GE3 more than one LD from Moon161001551discovery MPEC issued for 2018 GD4
09482018 GE3 exits Earth-Moon system1611015472018 HM closest Earth approach = 2.85 LD
06322018 GE3 within one LD of Moon161111511discovery MPEC issued for 2018 GY3
03322018 GE3 enters Earth-Moon system161011511discovery 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
22512018 HE2 enters 10-LD bubble161002320discovery MPEC issued for 2018 GE3
22102018 GE3 enters Earth SOI151001202discovery MPEC issued for 2018 FL29
20202018 GN1 exits 10-LD bubble150001202discovery MPEC issued for 2018 EA10
19412018 HD exits 10-LD bubble1600009362018 GD5 designation credited to MLS at 3.64 LD outbound, G=19.1 reported, elon. 145.5°
17522018 GG exits 10-LD bubble1700009232018 GE3 designation credited to CSS at 5.91 LD inbound, G=15.6 reported, elon. 158.7°
09172018 GK4 enters 10-LD bubble1800008522018 GK4 designation credited to CSS at 10.03 LD inbound, G=18.6 reported, elon. 175.7°
03322018 GY3 exits 10-LD bubble170000743distant 2012 SR56 last observed optically, by Steward Mt. Lemmon Sta. at 46.26 LD, G=21.1 reported
00212018 GD2 exits Earth SOI1800006402014 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 bubble1810023102018 GV1 closest Earth approach = 4.80 LD
11492018 GC2 enters 10-LD bubble1710015102018 GP last observed optically, by Tokyo-Kiso Obs. at 4.38 LD outbound, g=19.4 reported
08072018 GD2 more than one LD from Moon1610014032018 GV1 last observed optically, by Mt. John Obs. at 4.86 LD inbound, R=18.3 reported
01212018 GD2 exits Earth-Moon system161101121discovery MPEC issued for 2018 GE2
11032018 GP closest Earth approach = 4.36 LD
10302018 GG4 designation credited to PS1 at 36.15 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 bubble1611122222018 HO closest Earth approach = 7.56 LD
19172018 HD1 enters 10-LD bubble171111836discovery MPEC issued for 2018 GD2
17062018 GD2 within one LD of Moon161111829discovery MPEC issued for 2018 GC2
15132018 HW1 enters 10-LD bubble161011800discovery MPEC issued for 2018 GW1
08022018 GD2 enters Earth-Moon system151011756discovery 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 = 9.17 LD
11 April 2018
UTBoundary Transitions<10<SIM<1E<1Events
17122018 GN exits 10-LD bubble1510021572018 GG closest Earth approach = 4.68 LD
11072018 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
17312018 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
21412018 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 11.37 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
01082018 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
20012018 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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