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
2021-09-11 04:47:21 C 16 39 06.52 +40 48 39.2 U I41
2021-09-11 05:48:40 C 16 39 16.89 +40 49 01.4 U I41
2021-09-11 05:58:52 C 16 39 19.25 +40 49 17.7 V T05
2021-09-11 06:04:53 C 16 39 20.25 +40 49 19.9 V T05
2021-09-11 06:13:27 C 16 39 21.67 +40 49 23.3 V T05
2021-09-11 06:32:40 C 16 39 24.83 +40 49 29.7 V T05
2021-09-12 03:47:54 C 16 43 03.57 +40 57 54.4 V 703
2021-09-12 03:56:43 C 16 43 05.11 +40 57 58.4 U I41
2021-09-12 04:19:18 C 16 43 08.65 +40 58 05.4 V 703
2021-09-12 04:23:56 C 16 43 09.58 +40 58 07.7 U I41
2021-09-12 04:27:06 C 16 43 10.01 +40 58 07.7 V 703
2021-09-12 04:34:56 C 16 43 11.17 +40 58 10.8 V 703
2021-09-12 04:59:57 C 16 43 15.52 +40 58 19.8 U I41
2021-09-12 05:46:24 C 16 43 23.25 +40 58 35.1 U I41
2021-09-13 03:28:26 C 16 47 03.46 +41 06 43.8 U I41
2021-09-13 04:13:04 C 16 47 10.65 +41 06 57.9 U I41
2021-09-13 04:51:30 C 16 47 16.87 +41 07 09.8 U I41
2021-09-13 04:55:36 C 16 47 17.55 +41 07 10.9 U I41
2021-09-13 05:37:09 C 16 47 25.08 +41 07 36.2 V T08
2021-09-13 05:41:48 C 16 47 25.77 +41 07 36.7 V T08
2021-09-13 05:50:33 C 16 47 27.17 +41 07 40.9 V T08
2021-09-13 06:09:12 C 16 47 30.14 +41 07 46.7 V T08
2021-09-15 04:07:13 C 16 55 03.62 +41 22 42.6 V 703
2021-09-15 04:14:56 C 16 55 04.79 +41 22 43.1 V 703
2021-09-15 04:22:38 C 16 55 05.98 +41 22 46.2 V 703
2021-09-15 04:30:20 C 16 55 07.31 +41 22 47.4 V 703
2021-09-17 03:22:59 C 17 02 36.75 +41 35 51.0 U I41
2021-09-17 03:41:29 C 17 02 39.53 +41 35 54.9 U I41
2021-09-17 05:23:35 C 17 02 55.09 +41 36 16.0 U I41
2021-09-17 06:10:22 C 17 03 02.31 +41 36 25.1 U I41
2021-09-22 03:25:31 C 17 20 53.72 +41 59 43.4 U I41
2021-09-22 03:52:07 C 17 20 57.50 +41 59 46.4 U I41
2021-09-22 06:05:02 C 17 21 16.59 +41 59 59.3 U I41
2021-09-22 06:34:18 C 17 21 20.87 +42 00 02.0 U I41
2021-09-23 05:28:37 C 17 24 43.52 +42 03 24.6 V T05
2021-09-23 05:33:15 C 17 24 44.14 +42 03 25.0 V T05
2021-09-23 05:41:10 C 17 24 45.25 +42 03 25.5 V T05
2021-09-23 05:59:43 C 17 24 47.81 +42 03 27.7 V T05
2021-09-24 04:25:45 C 17 28 03.17 +42 05 59.6 V 703
2021-09-24 04:33:43 C 17 28 04.33 +42 06 00.4 V 703
2021-09-24 04:49:40 C 17 28 06.60 +42 06 01.3 V 703
2021-09-24 07:01:02 C 17 28 25.57 +42 06 22.9 V T08
2021-09-24 07:10:59 C 17 28 27.02 +42 06 23.2 V T08
2021-09-24 07:14:58 C 17 28 27.56 +42 06 22.7 V T08
2021-09-24 07:33:34 C 17 28 30.22 +42 06 24.8 V T08
2021-09-24 12:00:10 C 17 29 09.20 +42 06 51.5 V D29
2021-09-24 12:18:57 C 17 29 11.82 +42 06 52.9 V D29
2021-09-24 12:35:31 C 17 29 14.08 +42 06 54.0 V D29
2021-09-24 12:54:19 C 17 29 16.70 +42 06 55.6 V D29
2021-09-24 13:13:06 C 17 29 19.31 +42 06 55.5 V D29
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)