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
2021-10-13 06:55:34 C 18 31 11.99 +41 56 13.2 V T05
2021-10-15 03:58:18 C 18 37 18.97 +41 50 10.6 V 703
2021-10-15 04:14:02 C 18 37 21.04 +41 50 08.3 V 703
2021-10-15 04:21:54 C 18 37 21.98 +41 50 06.9 V 703
2021-10-17 03:09:28 C 18 43 44.63 +41 43 11.9 V 703
2021-10-17 03:16:37 C 18 43 45.61 +41 43 09.6 V 703
2021-10-17 03:30:54 C 18 43 47.48 +41 43 07.8 V 703
2021-10-24 03:12:59 C 19 06 54.88 +41 12 01.3 V G96
2021-10-24 03:19:53 C 19 06 55.80 +41 11 59.5 V G96
2021-10-24 03:26:49 C 19 06 56.75 +41 11 57.8 V G96
2021-10-24 03:33:43 C 19 06 57.68 +41 11 56.1 V G96
2021-10-25 04:54:57 C 19 10 31.05 +41 06 31.0 V T05
2021-10-25 05:00:55 C 19 10 31.98 +41 06 27.5 V T05
2021-10-25 05:10:50 C 19 10 33.24 +41 06 26.8 V T05
2021-10-25 05:26:09 C 19 10 35.26 +41 06 22.8 V T05
2021-10-27 05:43:40 C 19 17 23.68 +40 55 15.0 V T08
2021-10-27 05:48:18 C 19 17 24.33 +40 55 13.2 V T08
2021-10-27 05:56:57 C 19 17 25.54 +40 55 10.6 V T08
2021-10-27 06:12:14 C 19 17 27.63 +40 55 06.6 V T08
2021-11-19 20:57:19 C 20 43 36.24 +37 47 59.0 V 204
2021-11-19 21:13:12 C 20 43 38.80 +37 47 51.7 V 204
2021-11-19 21:28:55 C 20 43 41.35 +37 47 44.5 V 204
2021-11-28 06:02:09 C 21 17 02.58 +36 15 17.2 V T08
2021-11-28 06:02:48 C 21 17 02.67 +36 15 17.1 V T08
2021-11-28 06:08:09 C 21 17 03.51 +36 15 13.8 V T08
2021-11-28 06:10:48 C 21 17 03.97 +36 15 12.6 V T08
2021-11-28 06:27:25 C 21 17 06.76 +36 15 03.1 V T08
2021-11-28 06:28:05 C 21 17 06.92 +36 15 03.5 V T08
2021-12-12 03:05:57 C 22 15 07.08 +33 06 55.1 V G96
2021-12-12 03:22:35 C 22 15 09.99 +33 06 44.0 V G96
2021-12-12 03:30:55 C 22 15 11.45 +33 06 38.8 V G96
2021-12-13 05:50:46 C 22 19 52.80 +32 50 03.2 V T08
2021-12-13 05:56:05 C 22 19 53.76 +32 49 59.5 V T08
2021-12-13 06:06:05 C 22 19 55.53 +32 49 53.4 V T08
2021-12-13 06:24:14 C 22 19 58.70 +32 49 41.1 V T08
2021-12-21 02:16:35 C 22 53 36.04 +30 43 08.8 V G96
2021-12-21 02:24:41 C 22 53 37.45 +30 43 02.7 V G96
2021-12-21 02:32:47 C 22 53 38.90 +30 42 56.9 V G96
2021-12-21 02:40:54 C 22 53 40.29 +30 42 51.0 V G96
2021-12-22 17:05:31 C 23 00 33.79 +30 15 21.4 V 130
2021-12-22 17:09:48 C 23 00 34.54 +30 15 17.7 V 130
2021-12-22 17:13:23 C 23 00 35.15 +30 15 15.4 V 130
2022-01-04 02:42:16 C 23 53 31.26 +26 26 59.3 V 703
2022-01-04 02:50:34 C 23 53 32.64 +26 26 53.9 V 703
2022-01-04 02:58:52 C 23 53 34.09 +26 26 45.9 V 703
2022-01-04 03:07:10 C 23 53 35.42 +26 26 38.7 V 703
2022-01-05 01:35:55 C 23 57 32.90 +26 08 28.5 V G96
2022-01-05 01:44:11 C 23 57 34.31 +26 08 21.7 V G96
2022-01-05 01:52:28 C 23 57 35.74 +26 08 14.9 V G96
2022-01-05 02:00:43 C 23 57 37.14 +26 08 08.3 V G96
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)