<10=less than 10 LD from Earth

EBN Timeline for December 2016

<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)
31 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
14462017 BY enters 10-LD bubble710014162017 AP4 closest lunar approach = 2.44 LD
13002017 AP4 enters Earth SOI610004172016 YK4 last observed optically, by Holmes/CTIO at 28.20 LD outbound, V=21.8 reported
30 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
22082017 AF13 enters 10-LD bubble600021452017 AG5 closest Earth approach = 4.57 LD
18582017 AO4 exits 10-LD bubble5000
10172017 AZ3 enters 10-LD bubble6000
00482017 AT20 exits 10-LD bubble5000
29 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
19352017 AE3 exits 10-LD bubble600003052016 YM3 closest Earth approach = 4.42 LD
28 Dec. 2016
UTEvents
2232discovery MPEC issued for 2016 YD8
2200discovery MPEC issued for 2016 YC8
13472017 AE3 closest Earth approach = 8.49 LD
08112016 YY10 designation credited to PS1 at 15.57 LD outbound, w=20.3 reported, elon. 149.8°
07182016 YS last observed optically, by Holmes/CTIO at 10.56 LD outbound, V=21.3 reported, elon. 88.4°
0351distant 1995 CR observed first, by Schiaparelli Obs. at 83.36 LD, V=20.15 calculated, elon. 135.6°
0117distant 2012 AP10 observed first, by Micheli/Paranal at 74.86 LD, G=26.0 reported, elon. 77.6°
01042016 YM3 last observed optically, by Schiaparelli Obs. at 4.86 LD inbound, V=18.93 calculated
27 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
23382016 YS exits 10-LD bubble70002215discovery MPEC issued for 2016 YK4
17182016 YF exits 10-LD bubble800009302016 YC13 last observed optically, by MRO at 17.58 LD outbound, G=20.5 reported
14422017 AH5 exits 10-LD bubble900008362016 YC8 designation credited to MLS at 34.96 LD inbound, V=20.6 reported, elon. 154.6°
08002017 AE3 enters 10-LD bubble1000008312016 YD8 designation credited to MLS at 73.39 LD outbound, V=20.6 reported, elon. 155.5°
04162016 YJ exits 10-LD bubble900006522016 YC13 designation credited to MLS at 17.27 LD outbound, V=20.3 reported, elon. 166.5°
04582016 YR closest Earth approach = 7.17 LD
04522013 FK observed first, by MLS at 78.29 LD inbound, V=20.9 reported, elon. 144.5°
0242distant 1998 SL36 last observed optically, by Spacewatch 1.8m at 248.52 LD, V=21.80 calculated, elon. 63.3°
0231discovery MPEC issued for 2016 YM3
26 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
10282017 AP4 enters 10-LD bubble1000009322017 AH5 closest Earth approach = 8.18 LD - Note: JPL reports an approach to 8.18 LD (7.95 minimum) with an uncertainty of +/- 26 minutes.
07182017 AG5 enters 10-LD bubble900003242017 AO4 closest Earth approach = 5.71 LD
25 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
13182017 AT20 exits Earth SOI80000411distant 308635 2005 YU55 last observed optically, by ARO Westfield at 161.02 LD, V=22.0 reported
04232017 AH5 enters 10-LD bubble8100
24 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
14372016 YC13 exits 10-LD bubble710020532016 YF closest Earth approach = 8.68 LD
14202016 YY10 exits 10-LD bubble810011482017 AT20 closest Earth approach = 1.48 LD - Note: JPL reports an approach to 1.48 LD (1.21 minimum) with an uncertainty of +/- 23 hours and 15 minutes.
14182015 YQ1 exits 10-LD bubble910010412016 WQ1 last observed optically, by Tholen 2.24m at 68.70 LD outbound, G=25.0 reported
09012016 YM3 enters 10-LD bubble1010005142017 AT20 closest lunar approach = 2.07 LD
04352016 YM3 designation credited to MLS at 10.32 LD inbound, V=19.9 reported, elon. 162.9°
03512016 YH last observed optically, by Nault/Apache Point at 18.36 LD outbound, R=20.7 reported
23 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
10192017 AT20 enters Earth SOI91001305discovery MPEC issued for 2016 WR55
10092016 YJ exits Earth SOI900008542016 YK4 designation credited to PS1 at 14.52 LD outbound, w=20.4 reported, elon. 143.8°
03522016 XK18 exits 10-LD bubble910003012016 YS closest Earth approach = 3.92 LD
22 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
00402016 YF enters 10-LD bubble1010020462016 YJ closest lunar approach = 1.93 LD
14222016 YY10 closest Earth approach = 8.97 LD
10212016 YJ closest Earth approach = 1.22 LD
07482016 RD34 last observed optically, by Tholen 2.24m at 32.06 LD outbound, G=23.9 reported
21 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
11162017 AO4 enters 10-LD bubble910023192016 XK18 last observed optically, by KLENOT at 8.27 LD outbound, V=18.23 calculated
10342016 YJ enters Earth SOI810021452016 YC13 closest Earth approach = 5.79 LD - Note: JPL reports an approach to 5.79 LD (4.03 minimum) with an uncertainty of +/- 10 hours and 3 minutes.
05132016 WD7 exits 10-LD bubble800019242016 YJ last observed optically, by Sormano Obs. at 1.78 LD inbound, V=17.80 calculated
16082015 YQ1 closest Earth approach = 6.17 LD - Note: JPL reports an approach to 6.17 LD (5.58 minimum) with an uncertainty of +/- 20 minutes.
0217discovery MPEC issued for 2016 YS
0214discovery MPEC issued for 2016 YR
20 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
14112016 YY10 enters 10-LD bubble900004242016 WT7 last observed optically, by Holmes/CTIO at 25.33 LD outbound, V=21.9 reported
13232016 YK4 exits 10-LD bubble80000241discovery MPEC issued for 2016 YJ
0232discovery MPEC issued for 2016 YF
19 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
07132016 XR23 exits 10-LD bubble900007442016 XQ1 last observed optically, by ARO Westfield at 40.59 LD outbound, V=22.5 reported
04482016 YC13 enters 10-LD bubble1000005222016 YS designation credited to MLS at 8.40 LD inbound, V=17.9 reported, elon. 145.3°
04332016 YR designation credited to MLS at 8.38 LD inbound, V=19.0 reported, elon. 157.8°
18 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
23182016 YH exits 10-LD bubble900022002016 XK18 closest Earth approach = 5.85 LD
22532017 AT20 enters 10-LD bubble1000006372016 XZ20 last observed optically, by Nault/Apache Point at 83.61 LD outbound, R=21.8 reported
18052015 YQ1 enters 10-LD bubble900006062016 YJ designation credited to MLS at 8.82 LD inbound, V=20.2 reported, elon. 148.2°
11372015 XX169 exits 10-LD bubble800006042016 YH designation credited to MLS at 9.15 LD outbound, V=18.64 calculated, elon. 150.4°
07062016 YS enters 10-LD bubble900004032016 YF designation credited to MLS at 14.58 LD inbound, V=19.8 reported, elon. 142.7°
05452016 XW20 exits 10-LD bubble8000
17 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
16272016 YJ enters 10-LD bubble900003402016 XK18 last observed by radar, from DSS-14 at 6.75 LD inbound, V=17.01 calculated
16 Dec. 2016
UTEvents
1934discovery MPEC issued for 2016 XR23
1306discovery MPEC issued for 2016 XL23
01202016 XK18 first observed by radar, from DSS-14 at 8.02 LD inbound, V=17.56 calculated
15 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
08472015 YA exits 10-LD bubble800020102016 YK4 closest Earth approach = 5.38 LD
17462016 YH closest Earth approach = 7.68 LD
07232016 XR23 designation credited to ATLAS Haleakala at 5.74 LD outbound, w=17.9 reported, elon. 128.1°
14 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1
20422016 XA exits 10-LD bubble9000
16302016 XK18 enters 10-LD bubble10000
12522016 WQ3 exits 10-LD bubble9000
12252016 YR enters 10-LD bubble10000
13 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
20462016 XW20 exits Earth SOI900020222015 XX169 closest Earth approach = 7.46 LD
16072016 XE exits 10-LD bubble910019442015 YA closest Earth approach = 9.61 LD - Note: JPL reports an approach to 9.61 LD (9.11 minimum) with an uncertainty of +/- 14 minutes.
00172016 XW20 closest Earth approach = 1.79 LD
12 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
12042016 YH enters 10-LD bubble1010013092016 XR23 closest Earth approach = 4.42 LD
06392015 YA enters 10-LD bubble910011542016 XW20 closest lunar approach = 1.97 LD
03492016 XW20 enters Earth SOI81000526distant 2009 BE58 last observed optically, by Nault/Apache Point at 191.22 LD, R=21.2 reported
0523distant 2009 BE58 observed first, by Nault/Apache Point at 191.22 LD, R=21.1 reported, elon. 160.6°
04142016 XW20 last observed optically, by Nault/Apache Point at 2.38 LD inbound, R=18.5 reported
01302016 XA closest Earth approach = 7.19 LD
11 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
14362016 WQ8 exits 10-LD bubble80001500discovery MPEC issued for 2016 XZ20
02212016 YK4 enters 10-LD bubble900003582016 XA last observed optically, by Great Shefford Obs. at 7.53 LD inbound, R=18.2 reported
10 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
17592016 WB8 exits 10-LD bubble80001812discovery MPEC issued for 2016 XW20
07272016 WH10 exits 10-LD bubble900000322015 XX169 last observed optically, by Schiaparelli Obs. at 9.30 LD inbound, V=20.29 calculated
06282016 XJ exits 10-LD bubble10000
9 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
06302016 XA enters 10-LD bubble1100004242016 XZ20 designation credited to MLS at 35.51 LD outbound, V=20.2 reported, elon. 140.6°
06212015 XX169 enters 10-LD bubble100000353distant 2012 UK171 last observed optically, by Spacewatch 1.8m at 31.01 LD, R=19.8 reported
00442016 WZ8 exits 10-LD bubble9000
8 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
13502016 XE exits Earth SOI1000020392016 WQ8 closest Earth approach = 5.08 LD
08272016 YD8 exits 10-LD bubble101001743discovery MPEC issued for 2016 XK18
05322016 WG7 exits 10-LD bubble1110008062016 XW20 designation credited to MLS at 8.97 LD inbound, V=19.4 reported, elon. 133.4°
03502016 WQ8 last observed optically, by Tenagra II Obs. at 5.54 LD inbound, R=17.2 reported
7 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
18382016 XW20 enters 10-LD bubble1210008522016 XE closest lunar approach = 1.26 LD
08412016 XE closest Earth approach = 1.47 LD
03292016 YD8 closest Earth approach = 9.07 LD - Note: JPL reports an approach to 9.07 LD (9.06 minimum) with an uncertainty of +/- 8 minutes.
01472016 XK18 designation credited to MLS at 23.43 LD inbound, V=19.5 reported, elon. 125.5°
6 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
03332016 XE enters Earth SOI1110019192016 WH10 closest Earth approach = 5.70 LD
02452016 WQ8 enters 10-LD bubble110001027distant 2007 XH16 observed first, by WISE at 155.64 LD, R=19 reported, elon. 101.0°
09202016 WD7 closest Earth approach = 4.18 LD
03492016 WU7 last observed optically, by Holmes/CTIO at 42.80 LD outbound, V=21.5 reported
5 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
22292016 YD8 enters 10-LD bubble1000022492016 XE last observed optically, by Schiaparelli Obs. at 2.66 LD inbound, G=18.3 reported
18332016 XR23 enters 10-LD bubble900022472016 WH10 last observed optically, by KLENOT at 6.05 LD inbound, V=18.50 calculated
2146discovery MPEC issued for 2016 XQ1
17452016 WB8 closest Earth approach = 3.61 LD
10552016 XJ last observed optically, by Steward Mt. Lemmon Sta. at 6.25 LD outbound, V=21.0 reported
04412015 XX169 observed first, by Tenagra II Obs. at 14.70 LD inbound, R=21.1 reported, elon. 166.9°
03302016 WB8 last observed optically, by Tenagra II Obs. at 3.77 LD inbound, R=18.0 reported
4 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
21262016 XL23 exits 10-LD bubble80001306discovery MPEC issued for 2016 VF18
05392016 WQ3 exits Earth SOI90001306discovery MPEC issued for 2016 VB18
1306discovery MPEC issued for 2016 VA18
1306discovery MPEC issued for 2016 VZ17
06542016 XQ1 designation credited to MLS at 12.14 LD outbound, V=19.1 reported, elon. 170.4°
3 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
12162016 XZ20 exits 10-LD bubble91002055distant 308635 2005 YU55 observed first, by Nonndorf Obs. at 92.60 LD, V=18.9 reported, elon. 178.6°
09262016 WQ exits 10-LD bubble101001807discovery MPEC issued for 2016 XJ
07342016 WH10 enters 10-LD bubble111001756discovery MPEC issued for 2016 XG
1751discovery MPEC issued for 2016 XE
00402016 XG last observed optically, by Schwarzschild Obs. at 10.48 LD outbound, V=21.4 reported
0025discovery MPEC issued for 2016 XA
2 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
20082016 XG exits 10-LD bubble1010017412016 WQ3 closest lunar approach = 1.65 LD
15522016 XQ1 exits 10-LD bubble1110015552016 XZ20 closest Earth approach = 8.95 LD
13002016 XL23 last observed optically, by Tenagra II Obs. at 4.61 LD outbound, R=21.0 reported
0804distant 2013 UG1 last observed optically, by Nault/Apache Point at 120.09 LD, R=21.9 reported
06482016 WF1 last observed optically, by Nault/Apache Point at 28.70 LD outbound, R=22.3 reported
06292016 WU last observed optically, by Nault/Apache Point at 27.17 LD outbound, R=22.8 reported
1 Dec. 2016
UTBoundary Transitions<10<SIM<1E<1Events
19332016 XZ20 enters 10-LD bubble1210023152016 XJ closest Earth approach = 5.09 LD
13502016 XL23 exits Earth SOI1110018462016 WQ3 closest Earth approach = 1.48 LD
06192016 WY exits 10-LD bubble1120015542016 WG7 closest Earth approach = 2.61 LD
01182016 XE enters 10-LD bubble122001550discovery MPEC issued for 2016 WH10
01172016 WU2 exits 10-LD bubble112001538discovery MPEC issued for 2016 WC10
10082016 XL23 designation credited to MLS at 2.05 LD outbound, V=19.2 reported, elon. 149.1°
09302016 XJ designation credited to MLS at 5.12 LD inbound, V=18.2 reported, elon. 158.8°
0759distant 2013 UG1 observed first, by Nault/Apache Point at 122.65 LD, R=22.0 reported, elon. 104.8°
06352016 WF7 last observed optically, by Nault/Apache Point at 14.23 LD outbound, R=22.3 reported
06302016 WN7 last observed optically, by Nault/Apache Point at 16.24 LD outbound, R=22.0 reported
06072016 XG designation credited to MLS at 6.18 LD outbound, V=19.9 reported, elon. 172.9°
06032016 WZ8 last observed optically, by Steward Mt. Lemmon Sta. at 4.19 LD outbound, V=19.1 reported
05502016 XA designation credited to MLS at 28.19 LD inbound, V=20.4 reported, elon. 178.2°
05462016 XE designation credited to MLS at 9.71 LD inbound, V=20.6 reported, elon. 176.7°
04212016 WG7 last observed optically, by PJMSO at 2.70 LD inbound, R=17.4 reported
03212016 WQ3 last observed optically, by Tenagra II Obs. at 1.56 LD inbound, R=18.7 reported


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