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
2009-12-05 11:16:42 C 23 02 19.41 +44 10 09.6 u 379
2009-12-05 11:31:16 C 23 02 29.92 +44 08 15.1 u 379
2009-12-05 11:33:30 C 23 02 31.52 +44 07 57.5 u 379
2009-12-05 11:35:43 C 23 02 33.12 +44 07 40.1 u 379
2009-12-05 11:40:56 C 23 02 36.93 +44 06 58.8 u 379
2009-12-05 11:43:11 C 23 02 38.56 +44 06 40.8 u 379
2009-12-05 12:04:01 C 23 02 53.64 +44 03 55.7 u 379
2009-12-05 12:15:48 C 23 03 02.18 +44 02 22.3 u 379
2009-12-05 19:32:27 C 23 08 34.77 +43 06 18.8 c A53
2009-12-05 19:41:06 C 23 08 40.80 +43 05 10.3 c A53
2009-12-05 19:45:28 C 23 08 43.84 +43 04 35.5 c A53
2009-12-05 19:52:02 C 23 08 48.43 +43 03 43.6 c A53
2009-12-05 19:58:36 C 23 08 53.04 +43 02 51.1 c A53
2009-12-05 20:46:50 C 23 09 26.86 +42 56 25.1 c 560
2009-12-05 20:47:49 C 23 09 27.55 +42 56 17.2 c 560
2009-12-05 20:48:47 C 23 09 28.24 +42 56 09.4 c 560
2009-12-06 01:31:20 C 23 12 57.88 +42 20 17.2 r H53
2009-12-06 01:32:24 C 23 12 58.60 +42 20 09.5 r H53
2009-12-06 01:33:22 C 23 12 59.23 +42 20 01.4 r H53
2009-12-06 01:34:22 C 23 12 59.98 +42 19 53.2 r H53
2009-12-06 01:35:28 C 23 13 00.68 +42 19 44.4 r H53
2009-12-06 01:36:28 C 23 13 01.34 +42 19 36.4 r H53
2009-12-06 01:40:37 C 23 13 04.05 +42 18 58.7 o H21
2009-12-06 01:43:19 C 23 13 05.87 +42 18 37.1 o H21
2009-12-06 01:47:54 C 23 13 08.94 +42 18 00.6 o H21
2009-12-06 01:50:19 C 23 13 10.59 +42 17 40.9 o H21
2009-12-06 18:14:17 C 23 24 37.38 +40 07 43.5 r J95
2009-12-06 19:20:15 C 23 25 18.53 +39 58 56.4 r J95
2009-12-06 20:22:20 C 23 25 57.25 +39 50 34.7 r J95
2009-12-07 00:49:39 C 23 28 51.90 +39 15 30.9 r 932
2009-12-07 00:51:21 C 23 28 52.93 +39 15 17.1 r 932
2009-12-07 00:53:06 C 23 28 53.99 +39 15 02.8 r 932
2009-12-07 00:54:43 C 23 28 54.97 +39 14 49.7 r 932
2009-12-07 12:07:50 C 23 35 55.00 +37 44 57.3 u 379
2009-12-07 12:18:52 C 23 36 01.31 +37 43 25.4 u 379
2009-12-07 12:21:05 C 23 36 02.61 +37 43 06.7 u 379
2009-12-07 12:36:44 C 23 36 11.64 +37 40 57.6 u 379
2009-12-07 12:45:39 C 23 36 16.78 +37 39 43.1 u 379
2009-12-07 12:47:52 C 23 36 18.12 +37 39 24.6 u 379
2009-12-07 12:50:05 C 23 36 19.38 +37 39 06.5 u 379
2009-12-07 19:14:55 C 23 40 16.77 +36 47 13.8 o 639
2009-12-07 19:21:05 C 23 40 20.20 +36 46 23.5 o 639
2009-12-07 21:49:08 C 23 41 45.69 +36 26 15.7 o J16
2009-12-07 21:54:26 C 23 41 48.67 +36 25 32.4 o J16
2009-12-07 21:58:39 C 23 41 51.03 +36 24 57.7 o J16
2009-12-07 22:04:57 C 23 41 54.56 +36 24 05.9 o J16
2009-12-08 04:17:04 C 23 45 25.30 +35 34 24.5 r 932
2009-12-08 04:20:35 C 23 45 27.24 +35 33 55.6 r 932
2009-12-08 04:24:24 C 23 45 29.39 +35 33 23.8 r 932
2009-12-08 04:28:31 C 23 45 31.65 +35 32 49.7 r 932
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)