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
2023-03-02 18:50:17 C 03 03 37.409 -33 21 59.69 V M22
2023-10-01 14:04:44 C 07 59 53.002 +58 22 29.87 X F51
2023-10-01 14:23:34 C 07 59 56.401 +58 22 23.98 X F51
2023-10-01 14:44:38 C 08 00 00.197 +58 22 17.55 X F51
2023-10-04 11:58:21 C 08 12 36.364 +57 56 44.16 V 703
2023-10-04 12:04:53 C 08 12 37.501 +57 56 41.35 V 703
2023-10-04 12:18:00 C 08 12 39.802 +57 56 37.64 V 703
2023-10-19 10:35:31 C 09 11 52.084 +54 42 48.85 V G96
2023-10-19 10:50:43 C 09 11 54.316 +54 42 39.17 V G96
2023-10-19 10:58:19 C 09 11 55.432 +54 42 34.31 V G96
2023-10-19 11:28:22 C 09 11 59.867 +54 42 14.47 V 703
2023-10-19 11:35:30 C 09 12 00.842 +54 42 10.30 V 703
2023-10-19 11:42:38 C 09 12 01.948 +54 42 06.30 V 703
2023-10-19 11:49:45 C 09 12 02.898 +54 42 01.19 V 703
2023-10-19 13:38:24 C 09 12 19.634 +54 40 46.49 V T05
2023-10-19 13:43:20 C 09 12 20.551 +54 40 43.75 V T05
2023-10-19 13:53:37 C 09 12 22.015 +54 40 36.88 V T05
2023-10-19 14:07:58 C 09 12 24.098 +54 40 27.70 V T05
2023-10-25 14:17:30 C 09 33 17.318 +52 54 19.73 V T05
2023-10-25 14:23:22 C 09 33 18.130 +52 54 15.23 V T05
2023-10-25 14:48:22 C 09 33 21.578 +52 53 55.97 V T05
2023-10-25 15:06:39 C 09 33 23.976 +52 53 41.68 V T05
2023-11-01 09:49:06 C 09 55 11.111 +50 33 37.12 V G96
2023-11-01 09:56:02 C 09 55 11.986 +50 33 31.14 V G96
2023-11-01 10:02:59 C 09 55 12.875 +50 33 24.98 V G96
2023-11-01 10:09:54 C 09 55 13.760 +50 33 18.94 V G96
2023-11-08 14:11:05 C 10 16 25.142 +47 39 50.22 V T05
2023-11-08 14:15:39 C 10 16 25.584 +47 39 45.54 V T05
2023-11-08 14:24:07 C 10 16 26.556 +47 39 36.36 V T05
2023-11-08 14:42:22 C 10 16 28.690 +47 39 17.17 V T05
2023-11-13 11:28:37 C 10 29 54.035 +45 23 53.41 V G96
2023-11-13 11:35:30 C 10 29 54.769 +45 23 45.24 V G96
2023-11-13 11:42:23 C 10 29 55.511 +45 23 37.00 V G96
2023-11-13 11:49:16 C 10 29 56.245 +45 23 28.79 V G96
2023-11-18 14:50:52 C 10 43 20.885 +42 42 22.97 V T05
2023-11-18 14:56:23 C 10 43 21.478 +42 42 15.08 V T05
2023-11-18 15:07:17 C 10 43 22.498 +42 42 00.14 V T05
2023-11-18 15:16:54 C 10 43 23.513 +42 41 47.15 V T05
2023-11-24 12:54:47 C 10 58 04.565 +39 06 41.51 V T05
2023-11-24 12:59:33 C 10 58 05.038 +39 06 33.62 V T05
2023-11-24 13:08:46 C 10 58 05.916 +39 06 18.76 V T05
2023-11-24 13:24:43 C 10 58 07.447 +39 05 53.09 V T05
2023-11-25 14:59:45 C 11 00 41.782 +38 23 05.10 V T05
2023-11-25 15:02:21 C 11 00 42.086 +38 23 00.20 V T05
2023-11-25 15:08:32 C 11 00 42.593 +38 22 50.84 V T05
2023-11-25 15:37:15 C 11 00 45.331 +38 22 01.99 V T05
2023-12-03 13:28:22 C 11 19 28.754 +32 15 21.46 V T05
2023-12-03 13:30:58 C 11 19 28.987 +32 15 16.38 V T05
2023-12-03 13:42:10 C 11 19 30.026 +32 14 52.48 V T05
2023-12-03 14:19:43 C 11 19 33.454 +32 13 31.91 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)