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
2009-12-11 16:12:00 C 00 25 13.63 +24 52 31.2 15.5 o C20
2009-12-11 16:12:26 C 00 25 13.79 +24 52 28.1 15.6 o C20
2009-12-11 16:12:53 C 00 25 13.94 +24 52 25.1 15.7 o C20
2009-12-11 16:13:18 C 00 25 14.10 +24 52 22.0 15.9 o C20
2009-12-11 16:13:45 C 00 25 14.26 +24 52 18.9 15.7 o C20
2009-12-11 16:14:11 C 00 25 14.41 +24 52 15.9 15.7 o C20
2009-12-11 16:14:36 C 00 25 14.56 +24 52 12.8 15.6 o C20
2009-12-11 16:15:02 C 00 25 14.71 +24 52 09.8 15.7 o C20
2009-12-11 16:15:28 C 00 25 14.87 +24 52 06.7 15.5 o C20
2009-12-11 16:15:54 C 00 25 15.02 +24 52 03.5 15.8 o C20
2009-12-11 16:16:20 C 00 25 15.17 +24 52 00.5 15.7 o C20
2009-12-11 16:16:45 C 00 25 15.32 +24 51 57.3 15.7 o C20
2009-12-11 16:17:11 C 00 25 15.48 +24 51 54.4 15.8 o C20
2009-12-11 16:17:37 C 00 25 15.63 +24 51 51.3 15.9 o C20
2009-12-11 16:18:03 C 00 25 15.78 +24 51 48.1 15.8 o C20
2009-12-11 16:18:30 C 00 25 15.94 +24 51 45.0 15.7 o C20
2009-12-11 16:18:56 C 00 25 16.10 +24 51 41.9 15.6 o C20
2009-12-11 16:37:20 C 00 25 22.62 +24 49 30.7 15.6 o C20
2009-12-11 16:38:28 C 00 25 23.02 +24 49 22.7 15.6 o C20
2009-12-11 16:39:34 C 00 25 23.41 +24 49 14.7 15.6 o C20
2009-12-11 16:41:07 C 00 25 23.96 +24 49 03.7 15.6 o C20
2009-12-11 23:59:20 C 00 28 15.26 +23 57 35.0 o H26
2009-12-11 23:59:58 C 00 28 15.50 +23 57 30.5 o H26
2009-12-12 00:00:36 C 00 28 15.71 +23 57 26.0 o H26
2009-12-12 00:01:16 C 00 28 15.94 +23 57 21.5 o H26
2009-12-12 00:01:53 C 00 28 16.16 +23 57 17.1 o H26
2009-12-12 00:02:31 C 00 28 16.36 +23 57 12.9 o H26
2009-12-12 00:03:09 C 00 28 16.59 +23 57 08.5 o H26
2009-12-12 00:03:47 C 00 28 16.81 +23 57 04.0 o H26
2009-12-12 00:04:25 C 00 28 17.03 +23 56 59.5 o H26
2009-12-12 00:05:03 C 00 28 17.24 +23 56 55.2 o H26
2009-12-12 00:05:42 C 00 28 17.47 +23 56 50.8 o H26
2009-12-12 00:06:20 C 00 28 17.68 +23 56 46.5 o H26
2009-12-12 00:06:58 C 00 28 17.90 +23 56 41.9 o H26
2009-12-12 00:07:36 C 00 28 18.11 +23 56 37.6 o H26
2009-12-12 00:08:14 C 00 28 18.33 +23 56 33.1 o H26
2009-12-12 00:08:53 C 00 28 18.56 +23 56 28.5 o H26
2009-12-12 00:09:31 C 00 28 18.78 +23 56 24.1 o H26
2009-12-12 00:10:10 C 00 28 19.01 +23 56 19.5 o H26
2009-12-12 00:10:49 C 00 28 19.22 +23 56 15.1 o H26
2009-12-12 00:11:27 C 00 28 19.45 +23 56 10.7 o H26
2009-12-12 01:34:12 C 00 28 50.30 +23 46 57.0 15.7 c 704
2009-12-12 01:52:32 C 00 28 56.42 +23 44 49.9 16.1 c 704
2009-12-12 02:10:57 C 00 29 02.59 +23 42 41.9 16.3 c 704
2009-12-12 02:12:12 C 00 28 58.49 +23 42 05.6 r 932
2009-12-12 02:16:16 C 00 28 59.90 +23 41 36.8 r 932
2009-12-12 02:18:34 C 00 29 00.68 +23 41 20.5 r 932
2009-12-12 02:24:57 C 00 29 02.88 +23 40 35.5 r 932
2009-12-12 02:27:26 C 00 29 03.74 +23 40 17.9 r 932
2009-12-12 02:29:23 C 00 29 08.71 +23 40 33.3 16.2 c 704
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)