EBN April '10 timeline

<10	=	less than 10 LD from Earth	EBN Timeline for April 2010
<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

30 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
1239	2010 HW20 exits 10-LD bubble	3	1	0	0
29 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0621	2010 HF exits 10-LD bubble	4	1	0	0	2347	2002 JR100 closest Earth approach = 8.03 LD
						0149	2009 UY19 last observed optically, by ARO Westfield at 10.74 LD outbound, V=18.3 reported
28 April 2010
						UTC	Events
						1859	2010 HW20 closest Earth approach = 9.85 LD
27 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
1816	2009 UY19 exits 10-LD bubble	5	1	0	0
0302	2010 JW34 enters Earth's Hill sphere	6	1	0	0
0112	2010 HW20 enters 10-LD bubble	6	0	0	0
26 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1858	2010 GP33 exits 10-LD bubble	5	0	0	0	0906	2010 GL65 last observed optically, by MLS at 33.72 LD outbound, V=21.1 reported
1602	2002 JR100 enters 10-LD bubble	6	0	0	0
25 April 2010
						UTC	Events
						1026	2010 HW20 discovered by MLS at 10.39 LD inbound, V=20.2 reported, elon. 146.4°
24 April 2010
						UTC	Events
						1104	2010 HF last observed optically, by MPC Code 926 at 4.71 LD outbound, R=19.7 reported
23 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
2125	2009 BD enters 10-LD bubble	5	0	0	0	0844	2009 UY19 closest Earth approach = 8.82 LD
1540	2010 GO67 exits 10-LD bubble	4	0	0	0
1509	2010 HF exits Earth's Hill sphere	5	0	0	0
0039	2010 HP20 exits 10-LD bubble	5	1	0	0
22 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0600	2005 YU55 exits 10-LD bubble	6	1	0	0	2336	2010 GP33 closest Earth approach = 8.10 LD
						1115	2010 GO67 closest Earth approach = 7.46 LD
						0032	2010 GO67 last observed optically, by MPC Code J95 at 7.87 LD inbound, R=18.1 reported
21 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0651	2010 GO67 enters 10-LD bubble	7	1	0	0	1857	2005 YU55 last observed by radar, from Arecibo at 8.94 LD outbound, V=nil
						0615	2010 GD25 last observed optically, by ARO Westfield at 47.03 LD outbound, V=22.8 reported
20 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1104	2010 HP20 exits Earth's Hill sphere	6	1	0	0	2356	2010 HF closest Earth approach = 2.35 LD
						2043	2005 YU55 last observed optically, by MPC Code J95 at 7.13 LD outbound, R=18.3 reported, elon. 58.4°
						1154	2010 HP20 last observed optically, by MLS at 3.97 LD outbound, V=19.1 reported
						1045	2010 HP20 discovered by MLS at 3.86 LD outbound, V=19.4 reported, elon. 136.9°
						0517	2010 GP33 last observed optically, by MPC Code 926 at 9.15 LD inbound, R=20.2 reported
19 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0425	2010 HP20 exits Earth-Moon system	6	2	0	0	2144	2005 YU55 first observed by radar, from Arecibo at 6.03 LD outbound, V=16.36 calculated
0425	2010 GP33 enters 10-LD bubble	6	2	0	1	1220	2005 YU55 closest Earth approach = 5.91 LD - Note: JPL reports an approach to 0.8 LD at 2328 UTC .
18 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
2258	2009 UY19 enters 10-LD bubble	5	2	0	1	2036	2010 HP20 closest Earth approach = 0.62 LD - Note: JPL reports an approach uncertainty of 4 hours and 3 minutes.
1246	2010 HP20 enters Earth-Moon system	4	2	0	1	1137	2010 HP20 closest lunar approach = 1.11 LD
0836	2010 HF enters Earth's Hill sphere	4	2	0	0	0752	2010 GD6 last observed optically, by ARO Westfield at 47.04 LD outbound, V=22.0 reported, elon. 95.7°
						0433	2010 FX9 last observed optically, by ARO Westfield at 78.28 LD outbound, V=20.9 reported
						0315	2010 HF discovered by MPC Code 704 at 4.10 LD inbound, mag 18.2 reported, elon. 118.3°
17 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0607	2010 HP20 enters Earth's Hill sphere	4	1	0	0	2122	2009 UY19 observed first, by MPC Code B03 at 10.58 LD inbound, V=18.1 reported, elon. 107.7°
						0735	2010 GH7 last observed optically, by ARO Westfield at 16.12 LD outbound, V=21.3 reported
						0529	2010 HY103 discovered by MLS at 44.23 LD inbound, V=20.2 reported, elon. 144.5°
16 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1843	2005 YU55 enters 10-LD bubble	4	0	0	0	0455	2010 GV23 last observed optically, by MRO at 13.77 LD outbound, R=20.5 reported
0344	2010 GM23 exits 10-LD bubble	3	0	0	0
15 April 2010
						UTC	Events
						1003	2010 GO67 discovered by MLS at 40.57 LD inbound, V=21.1 reported, elon. 164.3°
14 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1628	2010 HP20 enters 10-LD bubble	4	0	0	0	0736	2010 GL65 discovered by MPC Code 704 at 12.95 LD outbound, mag 18.8 reported, elon. 163.9°
						0357	2010 FV9 last observed optically, by ARO Westfield at 57.20 LD outbound, V=22.7 reported
13 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1641	2010 GM23 exits Earth's Hill sphere	3	0	0	0	0225	2010 GM23 closest Earth approach = 3.44 LD
0833	2010 GF7 exits 10-LD bubble	3	1	0	0	0216	2010 GM23 last observed optically, by MPC Code C51 at 3.44 LD inbound, V=17.54 calculated, elon. 90.5°
0449	2010 GV23 exits 10-LD bubble	4	1	0	0
12 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
1823	2010 GA6 exits 10-LD bubble	5	1	0	0
1629	2010 HF enters 10-LD bubble	6	1	0	0
1208	2010 GM23 enters Earth's Hill sphere	5	1	0	0
0700	2010 GL65 exits 10-LD bubble	5	0	0	0
0241	2010 GH7 exits 10-LD bubble	6	0	0	0
11 April 2010
						UTC	Events
						0653	2010 GP33 discovered by MLS at 19.91 LD inbound, V=21.1 reported, elon. 142.8°
						0530	2010 GP33 observed first, by MLS at 20.00 LD inbound, V=20.9 reported, elon. 142.8°
10 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
1110	2010 GA6 exits Earth's Hill sphere	7	0	0	0
0402	2010 GF7 exits Earth's Hill sphere	7	1	0	0
0108	2010 GM23 enters 10-LD bubble	7	2	0	0
9 April 2010
						UTC	Events
						1154	2010 GF7 last observed optically, by MPC Code 926 at 3.09 LD outbound, R=19.0 reported, elon. 71.3°
						1027	2010 GA6 closest lunar approach = 1.72 LD
						0745	2010 GD25 discovered by MLS at 21.35 LD outbound, V=20.2 reported, elon. 175.2°
						0516	2010 GV23 discovered by MLS at 5.18 LD outbound, V=19.2 reported, elon. 142.0°
						0350	2010 GA6 last observed optically, by MPC Code 926 at 1.15 LD outbound, R=16.6 reported, elon. 82.9°
						0206	2010 GA6 closest Earth approach = 1.13 LD
8 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0136	2010 GV23 exits Earth's Hill sphere	6	2	0	0	2246	2010 GF7 closest Earth approach = 2.85 LD
						0728	2010 GM23 discovered by CSS at 15.14 LD inbound, V=18.5 reported, elon. 160.4°
7 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1731	2010 GF7 enters Earth's Hill sphere	6	3	0	0	2104	2010 GL65 closest Earth approach = 6.37 LD
1703	2010 GA6 enters Earth's Hill sphere	6	2	0	0	0915	2010 GH7 discovered by CSS at 4.66 LD outbound, V=19.8 reported, elon. 148.4°
1624	2010 JW34 enters 10-LD bubble	6	1	0	0
6 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
1532	2010 GH7 exits Earth's Hill sphere	5	1	0	0
5 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
0954	2010 GA6 enters 10-LD bubble	5	2	0	0	1101	2010 GV23 closest Earth approach = 2.08 LD
						0807	2010 GU21 discovered by CSS at 76.19 LD inbound, V=18.2 reported, elon. 166.9°
						0710	2010 GV23 closest lunar approach = 2.86 LD
						0703	2010 GF7 discovered by MPC Code 704 at 8.45 LD inbound, mag 18.4 reported, elon. 144.7°
						0612	2010 GD6 discovered by CSS at 16.70 LD outbound, V=19.4 reported, elon. 102.6°
						0358	2010 GA6 discovered by CSS at 10.66 LD inbound, V=18.8 reported, elon. 136.0°
4 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1306	2010 GF7 enters 10-LD bubble	4	2	0	0	0546	2010 GH7 closest lunar approach = 2.41 LD
3 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1		Events
1015	2010 GL65 enters 10-LD bubble	3	2	0	0	1922	2010 GH7 closest Earth approach = 1.98 LD
2 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
2026	2010 GV23 enters Earth's Hill sphere	2	2	0	0
0546	2010 FR9 exits 10-LD bubble	2	1	0	0
0022	2010 FW9 exits 10-LD bubble	3	1	0	0
1 April 2010
UTC	Boundary Transitions	<10	<HS	M<1	E<1
2305	2010 FT exits 10-LD bubble	4	1	0	0
1010	2010 GD25 exits 10-LD bubble	5	1	0	0
0728	2010 GD6 exits 10-LD bubble	6	1	0	0

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EBN Timeline for April 2010