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
2021-09-25 20:00:06 C 17 33 44.45 +42 09 47.6 Z L74
2021-09-25 20:25:27 C 17 33 47.94 +42 09 47.3 Z L74
2021-09-27 06:12:41 C 17 38 35.71 +42 12 23.1 V T05
2021-09-27 06:18:40 C 17 38 36.51 +42 12 23.5 V T05
2021-09-27 06:31:55 C 17 38 38.30 +42 12 23.3 V T05
2021-09-27 06:46:41 C 17 38 40.27 +42 12 23.8 V T05
2021-09-28 04:22:12 C 17 41 42.51 +42 13 27.3 U I41
2021-09-28 04:23:33 C 17 41 42.69 +42 13 27.3 U I41
2021-09-28 04:43:45 C 17 41 45.45 +42 13 27.4 U I41
2021-09-28 04:45:07 C 17 41 45.64 +42 13 27.4 U I41
2021-09-29 05:46:33 C 17 45 15.786 +42 14 32.60 U F51
2021-09-29 06:03:17 C 17 45 18.001 +42 14 32.53 U F51
2021-09-29 06:36:45 C 17 45 22.453 +42 14 32.25 U F51
2021-09-29 06:52:14 C 17 45 24.46 +42 14 32.2 V T08
2021-09-29 06:53:34 C 17 45 24.75 +42 14 32.3 V T08
2021-09-29 07:01:34 C 17 45 25.77 +42 14 30.8 V T08
2021-09-29 07:10:11 C 17 45 26.89 +42 14 31.8 V T08
2021-09-29 07:12:11 C 17 45 27.16 +42 14 32.1 V T08
2021-09-29 07:22:53 C 17 45 28.67 +42 14 31.6 V T08
2021-10-02 03:43:10 C 17 54 55.50 +42 15 08.8 V 703
2021-10-02 03:51:02 C 17 54 56.50 +42 15 09.9 V 703
2021-10-02 03:58:54 C 17 54 57.49 +42 15 09.3 V 703
2021-10-02 04:06:46 C 17 54 58.59 +42 15 08.5 V 703
2021-10-03 02:41:18 C 17 58 04.65 +42 14 50.9 V G96
2021-10-03 02:49:00 C 17 58 05.62 +42 14 50.0 V G96
2021-10-03 02:56:41 C 17 58 06.64 +42 14 49.7 V G96
2021-10-03 03:04:22 C 17 58 07.64 +42 14 49.2 V G96
2021-10-03 05:50:34 C 17 58 30.31 +42 14 50.9 V T08
2021-10-03 05:56:01 C 17 58 31.04 +42 14 50.6 V T08
2021-10-03 06:03:22 C 17 58 32.03 +42 14 49.1 V T08
2021-10-03 06:10:43 C 17 58 33.00 +42 14 49.1 V T08
2021-10-03 06:16:03 C 17 58 33.69 +42 14 48.4 V T08
2021-10-03 06:24:42 C 17 58 34.77 +42 14 48.7 V T08
2021-10-03 06:25:22 C 17 58 34.92 +42 14 47.6 V T08
2021-10-03 06:47:25 C 17 58 37.72 +42 14 47.1 V T08
2021-10-05 06:08:37 C 18 05 05.30 +42 13 07.7 V T05
2021-10-05 06:13:17 C 18 05 05.90 +42 13 07.8 V T05
2021-10-05 06:22:35 C 18 05 07.08 +42 13 07.0 V T05
2021-10-05 06:37:11 C 18 05 09.05 +42 13 05.5 V T05
2021-10-11 04:07:19 C 18 24 19.30 +42 02 01.7 V 703
2021-10-11 04:14:58 C 18 24 20.19 +42 02 00.4 V 703
2021-10-11 04:22:38 C 18 24 21.21 +42 01 58.4 V 703
2021-10-11 04:30:16 C 18 24 22.23 +42 01 57.4 V 703
2021-10-11 05:27:56 C 18 24 30.52 +42 02 00.5 V T08
2021-10-11 05:36:34 C 18 24 31.65 +42 01 58.8 V T08
2021-10-11 05:41:13 C 18 24 32.22 +42 01 59.5 V T08
2021-10-11 05:57:52 C 18 24 34.43 +42 01 56.2 V T08
2021-10-13 06:25:08 C 18 31 08.08 +41 56 18.0 V T05
2021-10-13 06:29:45 C 18 31 08.64 +41 56 17.8 V T05
2021-10-13 06:40:19 C 18 31 10.01 +41 56 16.1 V T05
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)