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
2009-12-16 20:35:03 C 01 03 33.10 +12 19 53.9 16.7 o 084
2009-12-16 20:36:36 C 01 03 33.47 +12 19 45.7 16.6 o 084
2009-12-16 20:38:10 C 01 03 33.80 +12 19 38.5 16.9 o 084
2009-12-16 20:39:43 C 01 03 34.18 +12 19 30.0 16.7 o 084
2009-12-16 20:41:16 C 01 03 34.52 +12 19 22.6 17.3 o 084
2009-12-16 20:42:50 C 01 03 34.82 +12 19 14.9 17.3 o 084
2009-12-16 20:44:24 C 01 03 35.27 +12 19 06.7 17.0 o 084
2009-12-16 20:45:57 C 01 03 35.57 +12 18 58.7 17.1 o 084
2009-12-16 20:47:30 C 01 03 35.94 +12 18 50.8 16.5 o 084
2009-12-16 20:55:31 C 01 03 37.82 +12 18 10.6 17.7 o 084
2009-12-16 20:57:03 C 01 03 38.21 +12 18 03.0 17.2 o 084
2009-12-16 20:58:37 C 01 03 38.50 +12 17 55.7 17.3 o 084
2009-12-16 21:00:15 C 01 03 38.93 +12 17 47.3 17.7 o 084
2009-12-17 01:39:35 C 01 04 49.38 +11 55 30.2 o H21
2009-12-17 01:42:08 C 01 04 49.92 +11 55 17.7 o H21
2009-12-17 01:47:25 C 01 04 51.04 +11 54 51.6 o H21
2009-12-17 01:49:22 C 01 04 51.44 +11 54 42.2 o H21
2009-12-17 01:52:58 C 01 04 52.21 +11 54 24.6 o H21
2009-12-17 02:53:21 C 01 05 07.54 +11 49 43.1 r G96
2009-12-17 03:04:11 C 01 05 09.81 +11 48 50.2 r G96
2009-12-17 03:15:12 C 01 05 12.08 +11 47 56.5 r G96
2009-12-17 03:26:09 C 01 05 14.35 +11 47 02.9 r G96
2009-12-17 16:09:02 C 01 08 15.39 +10 45 36.7 16.7 r 084
2009-12-17 16:10:38 C 01 08 15.72 +10 45 29.5 16.8 r 084
2009-12-17 16:12:19 C 01 08 16.08 +10 45 21.4 16.6 r 084
2009-12-17 16:19:37 C 01 08 17.64 +10 44 46.9 16.6 r 084
2009-12-17 16:21:11 C 01 08 17.96 +10 44 39.8 16.7 r 084
2009-12-17 16:22:48 C 01 08 18.30 +10 44 32.7 16.7 r 084
2009-12-17 16:24:22 C 01 08 18.57 +10 44 26.0 16.7 r 084
2009-12-17 16:25:57 C 01 08 18.95 +10 44 18.7 16.9 r 084
2009-12-17 16:27:31 C 01 08 19.28 +10 44 10.9 16.7 r 084
2009-12-17 16:29:08 C 01 08 19.59 +10 44 04.1 16.8 r 084
2009-12-17 16:30:45 C 01 08 19.96 +10 43 55.5 17.0 r 084
2009-12-17 16:32:20 C 01 08 20.33 +10 43 48.2 16.7 r 084
2009-12-17 16:33:56 C 01 08 20.67 +10 43 40.5 16.8 r 084
2009-12-17 16:35:30 C 01 08 20.99 +10 43 33.3 16.8 r 084
2009-12-17 16:37:05 C 01 08 21.33 +10 43 25.9 16.9 r 084
2009-12-17 16:38:41 C 01 08 21.64 +10 43 18.6 16.7 r 084
2009-12-17 16:40:16 C 01 08 22.01 +10 43 11.1 17.1 r 084
2009-12-17 16:41:51 C 01 08 22.28 +10 43 04.9 16.9 r 084
2009-12-17 16:43:30 C 01 08 22.65 +10 42 56.0 17.0 r 084
2009-12-17 16:45:05 C 01 08 22.98 +10 42 49.0 16.6 r 084
2009-12-17 16:46:41 C 01 08 23.36 +10 42 41.3 16.8 r 084
2009-12-17 16:48:15 C 01 08 23.66 +10 42 34.6 16.5 r 084
2009-12-17 16:49:51 C 01 08 23.98 +10 42 26.7 16.6 r 084
2009-12-17 16:51:26 C 01 08 24.36 +10 42 19.1 16.8 r 084
2009-12-17 16:53:02 C 01 08 24.69 +10 42 12.0 16.6 r 084
2009-12-17 16:54:37 C 01 08 24.96 +10 42 05.2 16.6 r 084
2009-12-17 16:56:13 C 01 08 25.36 +10 41 57.3 16.6 r 084
2009-12-17 16:57:48 C 01 08 25.69 +10 41 50.4 16.4 r 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)