<10=less than 10 LD from Earth

EBN Timeline for April 2017

<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 2017
UTBoundary Transitions<10<SIM<1E<1Events
05472017 HB1 exits 10-LD bubble40001159discovery MPEC issued for 2017 HA5
02382017 HY exits 10-LD bubble500011122017 HU3 last observed optically, by Steward Mt. Lemmon Sta. at 6.17 LD outbound, V=19.0 reported, elon. 79.4°
07252017 HA5 last observed optically, by Spacewatch 0.9m at 9.88 LD inbound, V=20.58 calculated
02262017 HU3 closest Earth approach = 6.12 LD
0216discovery MPEC issued for 2017 HX4
29 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
20472017 HW2 exits 10-LD bubble600020592017 CS last observed optically, by M57 Obs. at 59.13 LD inbound, G=18.2 reported
12502017 HA5 enters 10-LD bubble700019512014 JO25 last observed optically, by Eschenberg Obs. at 78.42 LD outbound, V=16.0 reported
05372017 HG4 last observed optically, by Tholen 2.24m at 5.78 LD outbound, G=20.6 reported
01492017 HX4 last observed optically, by Holmes/CTIO at 25.72 LD inbound, V=21.4 reported
28 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
20042017 HY3 exits 10-LD bubble60001159discovery MPEC issued for 2017 HG4
17092017 HV2 exits 10-LD bubble700010012017 HU2 last observed optically, by Mt. John Obs. at 7.51 LD outbound, R=19.9 reported
27 April 2017
UTEvents
21582017 HW2 closest Earth approach = 9.18 LD
11122017 HW2 last observed optically, by Tenagra II Obs. at 9.22 LD inbound, R=21.4 reported
26 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
03422017 HU3 enters 10-LD bubble80001159discovery MPEC issued for 2017 HU3
02022017 HD exits 10-LD bubble700011302017 HY3 last observed optically, by Tenagra II Obs. at 2.62 LD outbound, R=16.8 reported, elon. 88.4°
11122017 HA5 designation credited to PS1 at 10.97 LD inbound, w=20.7 reported, elon. 167.1°
1107discovery MPEC issued for 2017 HY3
10362017 HA5 observed first, by PS1 at 10.98 LD inbound, V=20.39 calculated, elon. 167.1°
09122017 HX4 designation credited to PS1 at 33.09 LD inbound, w=21.7 reported, elon. 168.2°
07322017 HY3 closest Earth approach = 2.55 LD
0643distant 2012 OQ last observed optically, by Holmes/CTIO at 262.18 LD, V=22.5 reported
06182017 HG4 designation credited to PS1 at 3.38 LD outbound, w=19.9 reported, elon. 109.3°
0225discovery MPEC issued for 2017 HO3
00582017 HO3 last observed optically, by Great Shefford Obs. at 21.54 LD outbound, G=21.0 reported
25 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23152017 HW2 enters 10-LD bubble800011582017 HL1 last observed optically, by Mt. John Obs. at 18.63 LD outbound, R=20.8 reported
13362017 HH1 exits 10-LD bubble700009242017 HZ last observed optically, by Mt. John Obs. at 20.38 LD outbound, R=21.5 reported
01202017 HV2 exits Earth SOI800003532017 HG1 last observed optically, by ARO Westfield at 12.24 LD outbound, V=22.5 reported
01012017 HG4 exits Earth SOI810002562017 HB1 last observed optically, by Great Shefford Obs. at 3.78 LD outbound, G=18.9 reported, elon. 86.2°
24 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
12142017 HV2 more than one LD from Moon820023352017 HJ last observed optically, by ESA OGS at 29.39 LD outbound, G=22.2 reported
08492017 HV2 exits Earth-Moon system821009552017 HY closest Earth approach = 3.24 LD
02042017 HV2 within one LD of Moon821109062017 HB1 closest Earth approach = 3.59 LD
08522017 HY3 designation credited to MLS at 7.88 LD inbound, V=18.6 reported, elon. 124.4°
07102017 HV2 closest lunar approach = 0.90 LD
06042017 HU3 designation credited to MLS at 13.22 LD inbound, V=20.0 reported, elon. 119.5°
23 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
19012017 HY3 enters 10-LD bubble820122022017 HV2 closest Earth approach = 0.33 LD
16032017 FT102 exits 10-LD bubble720121152017 HV2 last observed optically, by Great Shefford Obs. at 0.33 LD inbound, G=15.4 reported
13242017 HG1 exits 10-LD bubble820114542017 HH1 closest Earth approach = 6.06 LD
11162017 HV2 enters Earth-Moon system92011435discovery MPEC issued for 2017 HV2
04482017 HG4 exits Earth-Moon system92001431discovery MPEC issued for 2017 HU2
1427discovery MPEC issued for 2017 HW2
1205discovery MPEC issued for 2017 HH1
10382017 HF last observed optically, by Spacewatch 1.8m at 21.69 LD outbound, R=21.3 reported
10122017 HY last observed optically, by Tenagra II Obs. at 3.63 LD inbound, R=18.7 reported
08512017 HE last observed optically, by Spacewatch 0.9m at 28.72 LD outbound, R=20.9 reported
0616distant 2012 OQ observed first, by Holmes/CTIO at 265.42 LD, V=22.5 reported, elon. 158.5°
04282017 HH1 last observed optically, by Tenagra II Obs. at 6.32 LD inbound, R=19.5 reported
02472017 DC36 last observed optically, by ARO Westfield at 135.80 LD outbound, V=22.0 reported
22 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
18452017 HV2 enters Earth SOI920117032017 HD closest Earth approach = 3.76 LD
05252017 HG4 more than one LD from Moon91011207discovery MPEC issued for 2017 HB1
02222017 HO3 exits 10-LD bubble91111207discovery MPEC issued for 2017 HY
1207discovery MPEC issued for 2017 GG8
1207discovery MPEC issued for 2017 FA159
1207discovery MPEC issued for 2017 FX158
1207discovery MPEC issued for 2017 FW158
11432017 HD last observed optically, by Tenagra II Obs. at 3.81 LD inbound, R=17.6 reported
10152017 HG last observed optically, by Spacewatch 0.9m at 25.72 LD outbound, R=20.4 reported
07592017 HW2 designation credited to MLS at 14.65 LD inbound, V=21.4 reported, elon. 138.6°
07582017 HO3 designation credited to MLS at 10.64 LD outbound, V=19.5 reported, elon. 138.0°
06422017 HV2 designation credited to MLS at 3.45 LD inbound, V=20.1 reported, elon. 135.5°
06272017 FO101 last observed optically, by Holmes/CTIO at 64.28 LD outbound, V=22.5 reported
06232017 HG4 closest Earth approach = 0.61 LD
05002017 HU2 designation credited to CSS at 3.39 LD outbound, V=18.6 reported, elon. 118.9°
21 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
16122017 HH1 enters 10-LD bubble1011114122017 HW last observed optically, by Mt. John Obs. at 11.63 LD outbound, R=20.6 reported
07572017 HG4 enters Earth-Moon system91111122discovery MPEC issued for 2017 HL1
1111discovery MPEC issued for 2017 HG1
09522017 HG4 closest lunar approach = 0.69 LD
20 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
16412014 JO25 exits 10-LD bubble911021102017 HU2 closest Earth approach = 3.17 LD
14232017 HG4 within one LD of Moon101101840discovery MPEC issued for 2017 HZ
06572017 HL1 exits 10-LD bubble101001831discovery MPEC issued for 2017 HW
10582017 HL1 designation credited to PS1 at 10.25 LD outbound, w=19.8 reported, elon. 174.9°
10262017 HL1 observed first, by PS1 at 10.22 LD outbound, V=19.35 calculated, elon. 175.0°
19 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
21202017 HW exits 10-LD bubble1110012232014 JO25 closest Earth approach = 4.57 LD
11422017 HG4 enters Earth SOI1210006082017 HH1 designation credited to MLS at 18.87 LD inbound, V=20.4 reported, elon. 159.5°
08122017 HD enters 10-LD bubble1200005562017 HO3 closest Earth approach = 4.75 LD
05272017 HJ exits 10-LD bubble110000537distant 436724 2011 UW158 last observed optically, by MLS at 202.93 LD, V=20.3 reported
03062017 HV2 enters 10-LD bubble120000519distant 436724 2011 UW158 observed first, by MLS at 202.94 LD, V=20.1 reported, elon. 143.7°
03072017 HG1 designation credited to MLS at 4.25 LD outbound, V=18.8 reported, elon. 145.5°
18 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
18102017 HY enters 10-LD bubble110001953discovery MPEC issued for 2017 HD
13102017 HB1 enters 10-LD bubble100001950discovery MPEC issued for 2017 HJ
08052014 JO25 enters 10-LD bubble90001944discovery MPEC issued for 2017 HG
1940discovery MPEC issued for 2017 HF
1937discovery MPEC issued for 2017 HE
11462017 HW closest Earth approach = 9.54 LD
06102017 HB1 designation credited to MLS at 10.44 LD inbound, V=19.2 reported, elon. 159.8°
17 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
02122017 HW enters 10-LD bubble800011432014 JO25 observed first, by Tenagra II Obs. at 15.97 LD inbound, R=17.0 reported, elon. 34.7°
10122017 HJ designation credited to MLS at 3.99 LD outbound, V=17.8 reported, elon. 173.2°
08522017 HZ designation credited to MLS at 11.23 LD outbound, V=19.6 reported, elon. 173.3°
08522017 HY designation credited to MLS at 12.24 LD inbound, V=20.0 reported, elon. 173.2°
07192017 HG designation credited to MLS at 11.76 LD outbound, V=20.1 reported, elon. 149.7°
06592017 HW designation credited to MLS at 9.88 LD inbound, V=20.1 reported, elon. 150.1°
06192017 HW observed first, by MLS at 9.90 LD inbound, V=20.6 reported, elon. 149.9°
16 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
22452017 HJ exits Earth SOI700021582017 HG1 closest Earth approach = 2.81 LD
14532017 HG exits 10-LD bubble710009182017 HJ closest lunar approach = 1.14 LD
13252017 FF128 exits 10-LD bubble810008432017 HF designation credited to MLS at 10.60 LD outbound, V=19.4 reported, elon. 172.3°
12242017 HJ exits Earth-Moon system910008232017 HE designation credited to MLS at 13.53 LD outbound, V=20.0 reported, elon. 175.0°
09342017 HO3 enters 10-LD bubble910108102017 HD designation credited to MLS at 17.97 LD inbound, V=20.9 reported, elon. 177.4°
05422017 HJ closest Earth approach = 0.35 LD - Note: JPL reports an approach to 0.35 LD .
15 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23052017 HF exits 10-LD bubble810119572017 HL1 closest Earth approach = 5.88 LD
23002017 HJ enters Earth-Moon system9101
13562017 HZ exits 10-LD bubble9100
12382017 HJ enters Earth SOI10100
14 April 2017
UTBoundary Transitions<10<SIM<1E<1
15412017 HE exits 10-LD bubble10000
13 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
22372017 GX6 exits 10-LD bubble1100016072017 FF128 closest Earth approach = 6.66 LD
13332017 GT4 exits 10-LD bubble1200009122017 HG closest Earth approach = 4.30 LD
05582017 HJ enters 10-LD bubble13000
12 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23592017 FW128 exits 10-LD bubble1200023432017 HZ closest Earth approach = 9.28 LD
16112017 FJ3 exits 10-LD bubble13000
11 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
18182017 FS102 exits 10-LD bubble140000022discovery MPEC issued for 2017 GK6
13382017 GN6 exits 10-LD bubble15000
08102017 HL1 enters 10-LD bubble16000
10 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
18362017 FF128 enters 10-LD bubble150002227discovery MPEC issued for 2017 GN6
08562017 HZ enters 10-LD bubble140002224discovery MPEC issued for 2017 GX6
07032017 HU2 enters 10-LD bubble1300004172017 HE closest Earth approach = 2.92 LD
05342017 HG1 enters 10-LD bubble12000
03352017 HG enters 10-LD bubble11000
01022017 HG4 enters 10-LD bubble10000
9 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
02342017 FF3 exits 10-LD bubble900020042017 HF closest Earth approach = 2.92 LD
11132017 GN6 last observed optically, by Tenagra II Obs. at 7.69 LD outbound, R=20.7 reported
10542017 GX6 last observed optically, by Tenagra II Obs. at 5.50 LD outbound, R=19.6 reported
04592017 GK6 last observed optically, by Holmes/CTIO at 11.10 LD outbound, V=19.6 reported
01272017 GT4 closest Earth approach = 3.49 LD
8 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
22522017 FU64 exits 10-LD bubble1000009522017 GX6 designation credited to MLS at 4.81 LD outbound, V=19.0 reported, elon. 125.2°
21242017 FU102 exits 10-LD bubble1100008492017 FP128 last observed optically, by Tenagra II Obs. at 17.24 LD outbound, R=19.0 reported
17182017 GK6 exits 10-LD bubble12000
07522017 FM101 exits 10-LD bubble13000
7 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23442017 FT102 exits Earth SOI1400019592017 FS102 closest Earth approach = 7.69 LD
00442017 GM exits 10-LD bubble1410009402017 GG8 last observed optically, by Tenagra II Obs. at 23.12 LD outbound, R=20.8 reported
05402017 GT4 last observed optically, by Tenagra II Obs. at 5.16 LD inbound, R=18.1 reported
6 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
17122017 FQ127 exits 10-LD bubble1510020272017 FW128 closest Earth approach = 5.20 LD
19342017 GX6 closest Earth approach = 4.36 LD
19152017 FU64 closest Earth approach = 3.74 LD
11542017 GG8 designation credited to PS1 at 20.86 LD outbound, i=20.7 reported, elon. 149.2°
5 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23572017 FX101 exits 10-LD bubble1610011452017 FM101 last observed optically, by Tenagra II Obs. at 7.17 LD outbound, R=20.2 reported
16582017 HE enters 10-LD bubble1710011002017 FU64 last observed optically, by MLS at 6.89 LD inbound, V=16.4 reported
09082017 FX90 exits 10-LD bubble1610010382017 FX101 closest Earth approach = 9.92 LD
01262017 GM exits Earth SOI1710010182017 FQ63 last observed optically, by Steward Mt. Lemmon Sta. at 37.07 LD outbound, V=20.9 reported
09462017 GN6 designation credited to MLS at 4.32 LD outbound, V=20.1 reported, elon. 150.7°
09312017 FW90 last observed optically, by Spacewatch 1.8m at 13.79 LD outbound, R=21.0 reported
08242017 GH4 last observed optically, by Spacewatch 0.9m at 30.70 LD outbound, V=20.69 calculated
08122017 FW128 last observed optically, by Steward Mt. Lemmon Sta. at 5.61 LD inbound, V=19.5 reported
06362017 GK6 designation credited to SONEAR at 3.15 LD outbound, R=16.6 reported, elon. 150.9°
05172017 FS102 last observed optically, by Tenagra II Obs. at 8.80 LD inbound, R=19.7 reported
03482017 FX101 last observed optically, by Tenagra II Obs. at 9.94 LD inbound, R=20.2 reported, elon. 98.6°
0206discovery MPEC issued for 2017 GW4
4 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
21212017 FX101 enters 10-LD bubble1720023182017 GW4 last observed optically, by Great Shefford Obs. at 13.62 LD outbound, G=21.1 reported
16412017 GM exits Earth-Moon system1620018492017 FM101 closest Earth approach = 7.03 LD
15362017 FU64 enters 10-LD bubble162011827discovery MPEC issued for 2017 GT4
13392017 GT4 enters 10-LD bubble152011747discovery MPEC issued for 2017 GH4
11122017 GM more than one LD from Moon142011730discovery MPEC issued for 2017 FB157
06082017 FU102 exits Earth SOI1421114352017 GK6 closest Earth approach = 2.73 LD
05592017 GM within one LD of Moon143111035discovery MPEC issued for 2017 GM
04212017 GM enters Earth-Moon system1430110312017 GM closest Earth approach = 0.04 LD
02422015 TC25 exits 10-LD bubble1430008442017 GM closest lunar approach = 0.88 LD
01252017 GW4 exits 10-LD bubble1530007362017 GM last observed optically, by Tenagra II Obs. at 0.48 LD inbound, R=15.6 reported
01162017 FQ127 exits Earth SOI1630005172017 GN6 closest Earth approach = 4.06 LD
3 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
22212017 FS102 enters 10-LD bubble1640018222017 FT102 closest lunar approach = 1.04 LD
19362017 GM enters Earth SOI1540017302017 FQ127 closest lunar approach = 2.21 LD
16302017 HF enters 10-LD bubble1530017162017 FT102 closest Earth approach = 1.05 LD - Note: JPL reports an approach to 1.05 LD .
12502017 FV exits 10-LD bubble1430015502017 FQ127 closest Earth approach = 2.05 LD
09542017 FP128 exits 10-LD bubble1530012402017 GW4 designation credited to PS1 at 7.93 LD outbound, w=20.0 reported, elon. 173.1°
08092017 FU102 exits Earth-Moon system1630011522017 HY observed first, by PS1 at 36.37 LD inbound, w=21.9 reported, elon. 173.9°
06392017 FJ101 exits 10-LD bubble1630111122017 GW4 observed first, by PS1 at 7.70 LD outbound, w=19.8 reported, elon. 172.6°
06232017 FQ127 enters Earth SOI1730108082017 FB157 last observed optically, by Steward Mt. Lemmon Sta. at 12.80 LD outbound, V=21.54 calculated
05592017 FR91 exits 10-LD bubble1720108062017 GM designation credited to MLS at 4.25 LD inbound, V=20.5 reported, elon. 169.4°
07352017 FQ127 last observed optically, by Steward Mt. Lemmon Sta. at 2.33 LD inbound, V=16.4 reported
06282017 GT4 designation credited to MLS at 12.58 LD inbound, V=20.37 calculated, elon. 156.2°
05032017 FT102 last observed optically, by Steward Mt. Lemmon Sta. at 1.08 LD inbound, V=18.6 reported
04492017 FS91 last observed optically, by Steward Mt. Lemmon Sta. at 17.14 LD outbound, V=20.9 reported
2 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
16072017 FY101 exits 10-LD bubble1820120172017 FU102 closest Earth approach = 0.57 LD
08252017 FU102 enters Earth-Moon system192011912discovery MPEC issued for 2017 FW128
00182017 GG8 exits 10-LD bubble192001852discovery MPEC issued for 2017 FP128
18342017 FU102 closest lunar approach = 1.50 LD
1809discovery MPEC issued for 2017 FF128
12012017 FB102 last observed optically, by Spacewatch 1.8m at 25.56 LD outbound, V=22.24 calculated
06432017 FR last observed optically, by Spacewatch 0.9m at 43.55 LD outbound, V=21.97 calculated
03402017 FV closest Earth approach = 8.99 LD
02522017 FU90 last observed optically, by ARO Westfield at 39.16 LD outbound, V=22.2 reported
1 April 2017
UTBoundary Transitions<10<SIM<1E<1Events
23242017 FX90 exits Earth SOI2020020582017 FV last observed optically, by Great Shefford Obs. at 9.03 LD inbound, G=19.3 reported, elon. 86.5°
20182017 GM enters 10-LD bubble2030019502017 FX90 closest Earth approach = 2.37 LD
16162017 FX90 enters Earth SOI1930016022017 GW4 closest Earth approach = 2.48 LD
10262017 FU102 enters Earth SOI1920014312017 FX90 last observed optically, by Tholen 2.24m at 2.45 LD inbound, G=16.9 reported
09432017 FW90 exits 10-LD bubble1910013572015 TC25 last observed optically, by Tholen 2.24m at 8.86 LD outbound, G=21.9 reported
06102017 FM101 enters 10-LD bubble2010010362017 DX34 last observed optically, by Spacewatch 1.8m at 67.81 LD outbound, V=22.56 calculated
09592017 FD3 last observed optically, by Tholen 2.24m at 38.58 LD outbound, G=24.1 reported
09492017 GH4 designation credited to PS1 at 18.90 LD outbound, w=19.8 reported, elon. 158.7°
09252017 FU102 last observed optically, by Tenagra II Obs. at 2.47 LD inbound, R=18.3 reported
09222017 FL64 last observed optically, by Tholen 2.24m at 18.69 LD outbound, G=23.0 reported
08452016 TB57 last observed optically, by Tholen 2.24m at 50.89 LD outbound, G=22.7 reported


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