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
2006-01-11 17:26:39 C 23 57 51.13 +21 21 33.6 o 461
2006-01-11 17:30:31 C 23 57 51.78 +21 21 32.9 o 461
2006-01-20 04:26:17 C 00 31 19.60 +20 34 54.9 d 291
2006-01-20 04:31:57 C 00 31 20.52 +20 34 53.6 d 291
2006-01-20 04:37:34 C 00 31 21.38 +20 34 52.6 d 291
2006-01-23 16:51:27 C 00 45 08.29 +20 12 20.8 o 461
2006-01-23 16:56:06 C 00 45 09.01 +20 12 19.9 o 461
2006-01-23 17:00:45 C 00 45 09.75 +20 12 18.8 o 461
2006-02-04 01:58:41 C 01 29 07.93 +18 46 52.5 r 448
2006-02-04 02:18:39 C 01 29 11.04 +18 46 45.3 r 448
2006-02-04 02:40:33 C 01 29 14.44 +18 46 37.4 r 448
2006-02-17 02:02:05 C 02 17 44.05 +16 44 42.3 r H36
2006-02-17 02:25:57 C 02 17 47.74 +16 44 31.9 r H36
2006-02-24 02:56:23 C 02 43 08.66 +15 27 18.9 r G96
2006-02-24 03:03:42 C 02 43 09.73 +15 27 15.3 r G96
2006-02-24 03:18:24 C 02 43 11.91 +15 27 08.3 r G96
2006-03-31 12:24:01 C 04 40 20.75 +06 59 05.3 o D35
2006-03-31 12:30:22 C 04 40 21.75 +06 58 59.8 o D35
2006-03-31 12:36:42 C 04 40 22.35 +06 58 57.2 o D35
2006-08-04 20:49:03 C 12 11 21.79 +60 28 47.2 17.8 c 147
2006-08-04 20:49:52 C 12 11 22.16 +60 28 49.6 17.9 c 147
2006-08-04 20:51:29 C 12 11 22.93 +60 28 54.5 18.0 c 147
2006-08-04 20:58:12 C 12 11 26.20 +60 29 14.1 c 147
2006-08-04 21:03:39 C 12 11 28.80 +60 29 30.2 c 147
2006-08-07 21:04:06 C 12 46 54.72 +63 35 37.3 o J95
2006-08-07 21:09:50 C 12 46 57.50 +63 35 48.5 o J95
2006-08-07 21:15:35 C 12 47 00.36 +63 36 00.3 o J95
2006-08-07 21:17:24 C 12 47 00.63 +63 36 00.5 o 204
2006-08-07 21:41:18 C 12 47 12.57 +63 36 49.0 o 204
2006-08-07 21:47:10 C 12 47 15.47 +63 37 00.1 o 204
2006-08-07 22:03:50 C 12 47 23.66 +63 37 33.0 o 204
2006-08-21 20:36:00 C 15 09 27.18 +68 07 40.9 18.9 o 130
2006-08-21 20:39:23 C 15 09 28.23 +68 07 40.6 18.9 o 130
2006-08-21 20:43:12 C 15 09 29.44 +68 07 40.5 19.1 o 130
2006-08-21 20:46:26 C 15 09 30.42 +68 07 40.1 19.1 o 130
2006-08-21 21:01:53 C 15 09 36.10 +68 07 40.7 o J68
2006-08-21 21:32:49 C 15 09 45.77 +68 07 38.2 o J68
2006-08-21 22:01:11 C 15 09 54.60 +68 07 36.2 o J68
2006-08-24 23:06:11 C 15 31 39.02 +68 01 36.9 o J68
2006-08-24 23:37:10 C 15 31 47.52 +68 01 29.9 o J68
2006-08-25 00:33:26 C 15 32 03.22 +68 01 16.9 o J68
2006-08-30 19:50:46 C 16 05 34.76 +67 29 12.9 18.3 o 130
2006-08-30 19:55:05 C 16 05 35.60 +67 29 11.3 18.4 o 130
2006-08-30 20:00:08 C 16 05 36.66 +67 29 09.6 18.4 o 130
2006-08-30 20:05:10 C 16 05 37.65 +67 29 08.1 18.3 o 130
2006-09-04 19:45:55 C 16 28 17.96 +66 50 13.2 o 240
2006-09-04 19:48:20 C 16 28 18.41 +66 50 12.3 o 240
2006-09-04 19:50:46 C 16 28 18.84 +66 50 11.4 o 240
2006-09-05 20:08:57 C 16 32 23.39 +66 41 35.9 c 595
2006-09-05 20:33:00 C 16 32 27.16 +66 41 25.6 18.2 c 595
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)