199003 (2005 WJ56)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1520194228 ± 9.55e-09
Semi-major axis (a)0.9590116507 AU ± 1.43e-10
Inclination (i)21.61637987° ± 2.38e-06
Long. of Asc. Node (Ω)288.01474602° ± 4.47e-07
Arg. of Perihelion (ω)297.65358928° ± 1.15e-06
Mean Anomaly (M)266.88352734° ± 2.13e-06
Mean Motion (n)1.0494855208°/day ± 2.36e-10
Perihelion dist (q)0.81322325 AU ± 9.16e-09
Aphelion dist (Q)1.10480005 AU ± 9.16e-09
Orbital Period0.93915186 yr ± 2.11e-10
Physical Parameters
H (abs. magnitude)18.16
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.321″
Uncertainty0
Orbit TypeAten
MOID0.022468 AU
Observations Used1234
Radar Obs Used5
Oppositions1
Arc Total2005-2024
First Observation Used2005-11-29
Last Observation Used2024-11-29
Observations (1308)
Date Type RA Dec Mag Band Observatory
2006-12-19 02:13:20 C 22 58 24.00 +39 57 08.9 d G72
2006-12-19 02:16:22 C 22 58 24.69 +39 57 05.2 d G72
2006-12-19 02:19:22 C 22 58 25.37 +39 57 00.3 d G72
2006-12-20 02:32:07 C 23 03 15.76 +39 23 31.2 d G72
2006-12-20 02:35:26 C 23 03 16.32 +39 23 26.7 d G72
2006-12-20 02:42:06 C 23 03 17.51 +39 23 19.4 d G72
2006-12-20 02:48:46 C 23 03 18.89 +39 23 07.7 d G72
2006-12-23 01:56:26 C 23 17 27.00 +37 42 04.8 r H45
2006-12-23 01:57:53 C 23 17 27.29 +37 42 02.5 r H45
2006-12-23 01:59:01 C 23 17 27.52 +37 42 01.1 r H45
2006-12-23 02:00:11 C 23 17 27.73 +37 41 59.6 r H45
2006-12-23 02:01:18 C 23 17 27.95 +37 41 57.8 r H45
2007-01-05 18:03:04 C 00 20 06.78 +29 17 12.0 r 170
2007-01-05 18:06:46 C 00 20 07.46 +29 17 05.7 r 170
2007-01-05 18:10:27 C 00 20 08.13 +29 16 59.3 r 170
2007-01-08 00:54:11 C 00 30 02.21 +27 48 49.1 r H45
2007-01-08 00:55:32 C 00 30 02.41 +27 48 46.8 r H45
2007-01-08 00:56:53 C 00 30 02.67 +27 48 44.6 r H45
2007-01-08 00:58:04 C 00 30 02.85 +27 48 42.9 r H45
2007-01-08 00:59:14 C 00 30 03.08 +27 48 40.8 r H45
2007-01-10 01:54:52 C 00 38 45.27 +26 29 26.5 18.2 c 704
2007-01-10 02:13:08 C 00 38 48.41 +26 28 56.4 18.4 c 704
2007-01-10 02:31:28 C 00 38 51.54 +26 28 26.7 18.6 c 704
2007-01-10 02:49:53 C 00 38 54.69 +26 27 56.0 18.6 c 704
2007-01-12 18:03:25 C 00 49 56.64 +24 45 07.8 r 084
2007-01-14 17:23:46 C 00 58 02.70 +23 28 23.6 r 113
2007-01-14 17:25:59 C 00 58 03.10 +23 28 19.8 r 113
2007-01-16 18:08:24 C 01 06 13.64 +22 09 35.3 i 071
2007-01-16 18:14:24 C 01 06 14.67 +22 09 23.4 i 071
2007-01-16 18:21:06 C 01 06 15.93 +22 09 13.9 i 071
2007-01-17 03:55:05 C 01 07 50.98 +21 53 50.2 r 703
2007-01-17 04:04:28 C 01 07 52.46 +21 53 34.0 r 703
2007-01-17 04:13:48 C 01 07 54.04 +21 53 19.4 r 703
2007-01-17 04:23:09 C 01 07 55.52 +21 53 04.0 r 703
2007-01-20 19:06:51 C 01 22 05.23 +19 33 46.6 r 084
2007-01-20 19:10:00 C 01 22 05.72 +19 33 41.5 r 084
2007-01-21 02:06:50 C 01 23 12.67 +19 22 48.7 18.5 c 704
2007-01-21 02:41:45 C 01 23 18.05 +19 21 51.6 18.6 c 704
2007-01-21 02:59:13 C 01 23 20.77 +19 21 24.6 18.9 c 704
2007-01-21 03:16:40 C 01 23 23.49 +19 20 56.1 18.7 c 704
2007-01-23 01:44:48 C 01 30 45.70 +18 07 14.2 r H45
2007-01-23 01:46:06 C 01 30 45.87 +18 07 12.4 r H45
2007-01-23 01:47:17 C 01 30 46.03 +18 07 10.7 r H45
2007-01-23 01:48:30 C 01 30 46.24 +18 07 08.4 r H45
2007-01-23 01:49:46 C 01 30 46.42 +18 07 06.8 r H45
2007-01-27 19:34:27 C 01 48 13.53 +15 09 26.2 o 204
2007-01-27 19:39:36 C 01 48 14.30 +15 09 18.6 o 204
2007-01-27 19:44:24 C 01 48 15.02 +15 09 11.9 o 204
2007-09-13 21:53:40 C 06 19 50.01 +71 35 31.0 c A78
2007-09-13 21:58:41 C 06 19 51.35 +71 35 33.4 c A78
Radar Observations (10)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2008-01-09 02:12:00 29272278.9 4 us 2380 -1 -1
2008-01-09.091667 2927227890 4000 us 2380 251 251
2008-01-10 01:04:00 19847.14 0.05 Hz 2380 -1 -1
2008-01-10 01:08:00 27936813.1 1 us 2380 -1 -1
2008-01-10.044444 1984714 5 Hz 2380 251 251
2008-01-10.047222 2793681310 1000 us 2380 251 251
2008-01-11 00:52:00 -25527.29 0.05 Hz 2380 -1 -1
2008-01-11 00:58:00 28122839.5 4 us 2380 -1 -1
2008-01-11.036111 -2552729 5 Hz 2380 251 251
2008-01-11.040278 2812283950 4000 us 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)