490581 (2009 WZ104)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1926243223 ± 1.36e-08
Semi-major axis (a)0.8555029198 AU ± 6.35e-10
Inclination (i)9.83505361° ± 3.00e-06
Long. of Asc. Node (Ω)263.23456055° ± 1.53e-06
Arg. of Perihelion (ω)10.58758027° ± 5.15e-06
Mean Anomaly (M)209.78436838° ± 1.20e-05
Mean Motion (n)1.2456041084°/day ± 1.39e-09
Perihelion dist (q)0.69071225 AU ± 1.16e-08
Aphelion dist (Q)1.02029359 AU ± 1.16e-08
Orbital Period0.79128374 yr ± 8.81e-10
Physical Parameters
H (abs. magnitude)20.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.161″
Uncertainty0
Orbit TypeAten
MOID0.029560 AU
Observations Used1094
Oppositions2
Arc Total2005-2025
First Observation Used2005-11-19
Last Observation Used2025-01-31
Observations (1208)
Date Type RA Dec Mag Band Observatory
2009-11-30 23:50:08 C 21 20 36.38 +55 07 27.3 o H21
2009-11-30 23:52:01 C 21 20 38.33 +55 07 19.3 o H21
2009-11-30 23:54:10 C 21 20 40.58 +55 07 10.0 o H21
2009-11-30 23:56:04 C 21 20 42.53 +55 07 01.9 o H21
2009-11-30 23:59:17 C 21 20 45.89 +55 06 48.0 o H21
2009-12-02 01:48:25 C 21 48 26.16 +53 06 26.4 c 926
2009-12-02 01:49:47 C 21 48 27.50 +53 06 18.6 c 926
2009-12-02 09:16:48 C 21 56 08.13 +52 26 12.8 u 379
2009-12-02 09:32:35 C 21 56 23.11 +52 24 43.1 u 379
2009-12-02 09:37:55 C 21 56 28.25 +52 24 13.0 u 379
2009-12-02 09:49:58 C 21 56 39.84 +52 23 03.6 u 379
2009-12-02 17:35:19 C 22 04 30.94 +51 38 37.5 c 560
2009-12-02 17:36:19 C 22 04 31.88 +51 38 31.6 c 560
2009-12-02 17:36:55 C 22 04 32.38 +51 38 32.8 v 160
2009-12-02 17:37:19 C 22 04 32.81 +51 38 25.6 c 560
2009-12-02 17:38:40 C 22 04 33.99 +51 38 22.5 v 160
2009-12-02 17:40:12 C 22 04 35.44 +51 38 13.3 v 160
2009-12-02 17:41:34 C 22 04 36.72 +51 38 05.2 v 160
2009-12-02 17:43:06 C 22 04 38.15 +51 37 56.1 v 160
2009-12-03 01:24:25 C 22 12 11.73 +50 52 41.2 c 926
2009-12-03 01:26:09 C 22 12 13.27 +50 52 30.8 c 926
2009-12-03 01:27:52 C 22 12 14.82 +50 52 19.9 c 926
2009-12-03 18:09:19 C 22 27 53.90 +49 04 42.0 c 639
2009-12-03 18:33:14 C 22 28 14.68 +49 01 59.0 c 639
2009-12-03 19:01:30 C 22 28 41.83 +48 58 54.1 o J95
2009-12-03 19:20:39 C 22 28 58.33 +48 56 43.9 o J95
2009-12-03 19:37:52 C 22 29 13.18 +48 54 46.0 o J95
2009-12-04 01:23:16 C 22 34 21.56 +48 16 20.1 o H21
2009-12-04 01:30:35 C 22 34 27.67 +48 15 28.3 o H21
2009-12-04 01:40:19 C 22 34 35.81 +48 14 19.3 o H21
2009-12-04 02:25:04 C 22 35 20.36 +48 09 29.8 o G56
2009-12-04 02:30:16 C 22 35 24.64 +48 08 53.5 o G56
2009-12-04 02:35:05 C 22 35 28.59 +48 08 20.2 o G56
2009-12-04 02:41:09 C 22 35 30.59 +48 07 50.1 c 926
2009-12-04 02:42:42 C 22 35 31.87 +48 07 39.0 c 926
2009-12-04 02:44:14 C 22 35 33.14 +48 07 27.9 c 926
2009-12-04 08:50:16 C 22 40 56.82 +47 24 54.5 u 379
2009-12-04 08:58:05 C 22 41 03.09 +47 23 58.7 u 379
2009-12-04 09:00:19 C 22 41 04.83 +47 23 43.0 u 379
2009-12-04 09:37:02 C 22 41 34.07 +47 19 20.6 u 379
2009-12-04 09:40:59 C 22 41 37.25 +47 18 51.7 u 379
2009-12-04 09:43:14 C 22 41 39.04 +47 18 35.7 u 379
2009-12-05 02:21:05 C 22 55 20.37 +45 17 09.2 o H21
2009-12-05 02:24:19 C 22 55 22.81 +45 16 44.2 o H21
2009-12-05 02:28:22 C 22 55 25.87 +45 16 13.0 o H21
2009-12-05 02:30:15 C 22 55 27.29 +45 15 58.4 o H21
2009-12-05 02:34:17 C 22 55 30.33 +45 15 27.4 o H21
2009-12-05 05:51:23 C 22 58 01.78 +44 50 35.9 c 926
2009-12-05 05:52:55 C 22 58 03.00 +44 50 23.4 c 926
2009-12-05 05:54:29 C 22 58 04.17 +44 50 11.3 c 926
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-12-09 10:01:00 70505.0282 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)