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
2006-09-05 20:57:05 C 16 32 30.96 +66 41 15.5 c 595
2006-09-09 20:07:34 C 16 47 12.48 +66 06 22.3 18.4 r B11
2006-09-09 20:11:03 C 16 47 13.05 +66 06 20.7 18.3 r B11
2006-09-09 20:17:22 C 16 47 13.81 +66 06 18.0 18.5 r B11
2006-09-09 20:23:51 C 16 47 14.82 +66 06 15.7 18.1 r B11
2006-09-09 20:31:29 C 16 47 15.76 +66 06 12.1 18.5 r B11
2006-09-09 22:45:59 C 16 47 35.03 +66 05 14.2 o J68
2006-09-09 23:31:12 C 16 47 41.45 +66 04 54.5 o J68
2006-09-09 23:55:36 C 16 47 45.04 +66 04 43.6 o J68
2006-09-15 02:58:30 C 17 04 24.08 +65 17 25.1 18.2 c 704
2006-09-15 03:15:29 C 17 04 26.09 +65 17 17.4 18.2 c 704
2006-09-15 03:32:37 C 17 04 28.12 +65 17 10.0 18.2 c 704
2006-09-15 03:50:07 C 17 04 30.23 +65 17 02.1 18.0 c 704
2006-09-15 04:07:45 C 17 04 32.21 +65 16 53.8 18.0 c 704
2006-09-21 20:03:27 C 17 23 58.39 +64 12 31.7 c 215
2006-09-21 20:04:11 C 17 23 58.57 +64 12 30.7 c 215
2006-09-21 20:04:57 C 17 23 58.53 +64 12 29.6 c 215
2006-10-12 02:56:10 C 18 20 21.66 +60 48 53.1 18.5 c 704
2006-10-12 03:30:16 C 18 20 25.39 +60 48 35.9 18.5 c 704
2006-10-12 03:47:38 C 18 20 27.50 +60 48 28.4 18.6 c 704
2006-10-15 17:59:10 C 18 31 05.23 +60 10 18.3 c 240
2006-10-15 18:03:34 C 18 31 05.75 +60 10 16.3 c 240
2006-10-15 18:07:56 C 18 31 06.24 +60 10 14.2 c 240
2006-10-15 18:12:20 C 18 31 06.77 +60 10 12.1 c 240
2006-10-15 18:16:43 C 18 31 07.31 +60 10 10.1 c 240
2006-10-15 18:21:05 C 18 31 07.82 +60 10 08.1 c 240
2006-10-15 18:25:29 C 18 31 08.32 +60 10 06.1 c 240
2006-11-11 01:40:54 C 20 03 18.30 +54 42 35.4 18.8 c 704
2006-11-11 01:58:41 C 20 03 21.11 +54 42 23.8 18.9 c 704
2006-11-11 02:16:16 C 20 03 23.65 +54 42 10.0 19.6 c 704
2006-11-11 02:33:55 C 20 03 26.71 +54 41 59.9 19.0 c 704
2006-11-28 19:45:14 C 21 21 08.01 +49 15 59.1 o A32
2006-11-28 20:14:06 C 21 21 13.52 +49 15 31.3 o A32
2006-12-11 01:54:10 C 22 19 41.68 +44 04 50.4 18.9 c 704
2006-12-11 02:11:23 C 22 19 44.96 +44 04 29.5 19.1 c 704
2006-12-11 02:28:45 C 22 19 48.36 +44 04 08.0 19.1 c 704
2006-12-11 02:45:58 C 22 19 51.75 +44 03 46.9 19.0 c 704
2006-12-15 16:33:37 C 22 42 00.28 +41 46 14.4 18.5 r 084
2006-12-15 17:58:16 C 22 42 17.18 +41 44 26.8 r 113
2006-12-15 18:00:39 C 22 42 17.63 +41 44 24.0 r 113
2006-12-15 18:03:09 C 22 42 18.10 +41 44 20.8 r 113
2006-12-15 18:05:23 C 22 42 18.56 +41 44 17.7 r 113
2006-12-15 18:07:41 C 22 42 19.01 +41 44 14.9 r 113
2006-12-18 00:21:09 C 22 53 13.01 +40 32 22.9 o H68
2006-12-18 00:28:18 C 22 53 14.31 +40 32 13.7 o H68
2006-12-18 00:42:02 C 22 53 16.93 +40 31 53.7 o H68
2006-12-18 01:02:40 C 22 53 21.04 +40 31 23.6 o H68
2006-12-18 05:05:21 C 22 54 08.92 +40 26 00.6 d G72
2006-12-18 05:09:44 C 22 54 10.07 +40 25 47.6 d G72
2006-12-18 05:11:11 C 22 54 10.23 +40 25 42.9 d G72
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)