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
2009-12-12 02:33:37 C 00 29 05.87 +23 39 34.2 r 932
2009-12-12 02:42:16 C 00 29 08.87 +23 38 33.0 r 932
2009-12-12 02:46:35 C 00 29 10.37 +23 38 02.4 r 932
2009-12-12 02:47:41 C 00 29 14.81 +23 38 25.9 16.2 c 704
2009-12-12 02:53:11 C 00 29 12.66 +23 37 15.7 r 932
2009-12-12 20:19:31 C 00 35 31.21 +21 38 51.2 r A81
2009-12-12 20:23:15 C 00 35 32.41 +21 38 26.3 r A81
2009-12-12 20:27:33 C 00 35 33.78 +21 37 56.8 r A81
2009-12-14 09:47:17 C 00 47 41.98 +17 42 35.7 u 379
2009-12-14 09:52:39 C 00 47 43.39 +17 42 03.8 u 379
2009-12-14 10:33:16 C 00 47 54.16 +17 38 01.1 u 379
2009-12-14 10:38:40 C 00 47 55.59 +17 37 28.7 u 379
2009-12-14 11:32:36 C 00 48 09.92 +17 32 05.1 u 379
2009-12-14 11:35:19 C 00 48 10.61 +17 31 48.4 u 379
2009-12-14 11:38:03 C 00 48 11.36 +17 31 32.3 u 379
2009-12-14 11:46:47 C 00 48 13.69 +17 30 39.3 u 379
2009-12-14 11:49:31 C 00 48 14.43 +17 30 23.4 u 379
2009-12-15 09:04:01 C 00 54 25.57 +15 28 02.7 u 379
2009-12-15 09:06:40 C 00 54 26.19 +15 27 47.7 u 379
2009-12-15 09:09:21 C 00 54 26.85 +15 27 32.6 u 379
2009-12-15 12:08:07 C 00 55 10.16 +15 10 58.0 u 379
2009-12-16 02:13:55 C 00 58 57.24 +13 54 41.9 o H21
2009-12-16 02:18:29 C 00 58 58.29 +13 54 17.6 o H21
2009-12-16 02:22:48 C 00 58 59.31 +13 53 54.6 o H21
2009-12-16 02:26:49 C 00 59 00.21 +13 53 33.5 o H21
2009-12-16 02:29:46 C 00 59 00.91 +13 53 17.6 o H21
2009-12-16 17:43:11 C 01 02 53.78 +12 34 17.0 17.1 o 084
2009-12-16 17:44:47 C 01 02 54.14 +12 34 09.9 17.1 o 084
2009-12-16 17:47:58 C 01 02 54.86 +12 33 53.3 17.3 o 084
2009-12-16 19:45:26 C 01 03 21.61 +12 24 03.3 17.0 o 084
2009-12-16 19:48:52 C 01 03 22.41 +12 23 45.8 17.4 o 084
2009-12-16 19:51:48 C 01 03 23.11 +12 23 30.9 17.0 o 084
2009-12-16 19:53:22 C 01 03 23.47 +12 23 23.0 17.1 o 084
2009-12-16 19:54:56 C 01 03 23.83 +12 23 15.3 16.8 o 084
2009-12-16 19:56:29 C 01 03 24.21 +12 23 07.4 16.9 o 084
2009-12-16 19:58:03 C 01 03 24.56 +12 22 58.7 16.8 o 084
2009-12-16 19:59:40 C 01 03 24.88 +12 22 51.4 16.8 o 084
2009-12-16 20:02:55 C 01 03 25.67 +12 22 34.3 17.1 o 084
2009-12-16 20:04:33 C 01 03 25.99 +12 22 27.7 16.4 o 084
2009-12-16 20:06:08 C 01 03 26.39 +12 22 19.7 16.7 o 084
2009-12-16 20:07:46 C 01 03 26.79 +12 22 10.3 16.8 o 084
2009-12-16 20:09:23 C 01 03 27.19 +12 22 02.2 16.7 o 084
2009-12-16 20:11:01 C 01 03 27.55 +12 21 53.6 17.1 o 084
2009-12-16 20:12:36 C 01 03 27.94 +12 21 46.3 16.8 o 084
2009-12-16 20:17:20 C 01 03 28.96 +12 21 23.0 16.5 o 084
2009-12-16 20:18:55 C 01 03 29.31 +12 21 14.6 16.9 o 084
2009-12-16 20:28:36 C 01 03 31.57 +12 20 26.2 16.9 o 084
2009-12-16 20:30:14 C 01 03 31.94 +12 20 18.5 18.1 o 084
2009-12-16 20:31:50 C 01 03 32.39 +12 20 09.5 17.0 o 084
2009-12-16 20:33:28 C 01 03 32.73 +12 20 01.2 17.0 o 084
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)