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
2021-08-29 20:12:31 C 15 41 08.30 +37 29 55.3 V L63
2021-08-29 20:14:23 C 15 41 08.65 +37 29 56.8 V B38
2021-08-29 20:30:31 C 15 41 12.21 +37 30 12.3 V L63
2021-08-30 05:38:39 C 15 43 13.62 +37 39 24.6 V T05
2021-08-30 05:41:57 C 15 43 14.36 +37 39 27.4 V T05
2021-08-30 05:46:38 C 15 43 15.36 +37 39 32.3 V T05
2021-08-30 05:49:17 C 15 43 15.92 +37 39 34.3 V T05
2021-08-30 05:55:14 C 15 43 17.14 +37 39 40.0 V T05
2021-08-30 06:07:48 C 15 43 19.79 +37 39 50.6 V T05
2021-08-30 06:13:46 C 15 43 21.13 +37 39 56.7 V T05
2021-08-30 19:56:53 C 15 46 20.96 +37 52 41.9 V L63
2021-08-30 20:12:48 C 15 46 24.36 +37 52 56.2 V L63
2021-08-30 20:28:42 C 15 46 27.74 +37 53 10.1 V L63
2021-08-31 20:18:59 C 15 51 34.69 +38 14 34.5 Z L74
2021-08-31 20:26:12 C 15 51 36.22 +38 14 40.6 Z L74
2021-08-31 20:33:41 C 15 51 37.76 +38 14 46.6 Z L74
2021-09-01 06:01:22 C 15 53 38.10 +38 23 08.0 V T08
2021-09-01 06:06:01 C 15 53 39.05 +38 23 11.8 V T08
2021-09-01 06:14:01 C 15 53 40.68 +38 23 18.2 V T08
2021-09-01 06:28:40 C 15 53 43.63 +38 23 29.8 V T08
2021-09-02 03:55:14 C 15 58 11.99 +38 40 57.5 U I41
2021-09-02 04:24:23 C 15 58 17.82 +38 41 19.3 U I41
2021-09-02 04:25:44 C 15 58 18.09 +38 41 20.2 U I41
2021-09-02 04:38:17 C 15 58 20.61 +38 41 29.5 U I41
2021-09-02 04:45:46 C 15 58 22.12 +38 41 35.0 U I41
2021-09-05 05:23:11 C 16 12 53.70 +39 33 47.8 V T08
2021-09-05 05:29:51 C 16 12 54.95 +39 33 52.1 V T08
2021-09-05 05:37:13 C 16 12 56.31 +39 33 56.4 V T08
2021-09-05 05:55:07 C 16 12 59.62 +39 34 07.2 V T08
2021-09-05 06:04:07 C 16 13 01.328 +39 34 12.31 U F52
2021-09-05 06:19:46 C 16 13 04.236 +39 34 21.69 U F52
2021-09-05 06:35:26 C 16 13 07.137 +39 34 30.93 U F52
2021-09-06 19:35:03 C 16 20 10.34 +39 56 50.1 V B38
2021-09-06 19:43:20 C 16 20 11.84 +39 56 54.9 V B38
2021-09-06 19:51:22 C 16 20 13.28 +39 56 58.9 V B38
2021-09-06 20:00:14 C 16 20 14.94 +39 57 03.5 V B38
2021-09-07 03:46:14 C 16 21 42.13 +40 01 34.4 U I41
2021-09-07 03:57:16 C 16 21 44.12 +40 01 40.2 U I41
2021-09-07 05:15:50 C 16 21 58.36 +40 02 20.1 U I41
2021-09-07 05:17:11 C 16 21 58.60 +40 02 20.8 U I41
2021-09-07 05:34:56 C 16 22 02.67 +40 02 42.8 V T05
2021-09-07 05:40:17 C 16 22 03.58 +40 02 45.0 V T05
2021-09-07 06:19:54 C 16 22 10.63 +40 03 05.9 V T05
2021-09-07 06:27:58 C 16 22 12.07 +40 03 09.4 V T05
2021-09-08 04:07:43 C 16 26 11.63 +40 14 44.0 V 703
2021-09-08 04:15:32 C 16 26 13.01 +40 14 47.3 V 703
2021-09-08 04:23:21 C 16 26 14.45 +40 14 51.0 V 703
2021-09-08 04:31:10 C 16 26 15.74 +40 14 55.1 V 703
2021-09-11 03:50:05 C 16 38 56.95 +40 48 18.0 U I41
2021-09-11 04:17:44 C 16 39 01.55 +40 48 28.3 U I41
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)