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
2013-12-07 08:14:38 C 10 46 52.05 +04 46 25.4 u 807
2013-12-07 08:18:12 C 10 46 52.20 +04 46 16.8 u 807
2013-12-11 11:46:35 C 10 51 35.99 +00 32 32.7 q 448
2013-12-11 11:56:04 C 10 51 36.37 +00 32 08.2 q 448
2013-12-11 12:09:33 C 10 51 36.88 +00 31 32.0 q 448
2013-12-14 11:57:57 C 10 55 00.48 -02 46 57.6 q 703
2013-12-14 12:05:14 C 10 55 00.77 -02 47 18.5 q 703
2013-12-14 12:12:29 C 10 55 01.02 -02 47 39.5 q 703
2013-12-14 12:19:44 C 10 55 01.22 -02 48 00.2 q 703
2013-12-17 02:11:49 C 10 57 56.96 -05 50 44.6 q 160
2013-12-17 02:15:47 C 10 57 57.22 -05 50 57.2 q 160
2013-12-17 02:19:47 C 10 57 57.28 -05 51 09.3 q 160
2013-12-30 11:39:23 C 11 13 16.75 -24 49 39.4 q 703
2013-12-30 11:49:32 C 11 13 17.13 -24 50 20.3 q 703
2013-12-30 12:09:51 C 11 13 17.75 -24 51 42.0 q 703
2014-01-14 00:46:25 S 11 34 28.730 -50 27 03.02 L C51
2014-01-14 00:46:36 S 11 34 28.764 -50 27 02.95 L C51
2014-01-14 07:05:59 S 11 35 00.662 -50 56 02.83 L C51
2014-01-14 10:15:46 S 11 35 16.896 -51 10 33.49 L C51
2014-01-14 16:35:32 S 11 35 49.884 -51 39 33.91 L C51
2014-01-14 19:45:19 S 11 36 06.715 -51 54 03.06 L C51
2014-01-15 06:49:28 S 11 37 06.482 -52 44 43.55 L C51
2014-01-15 09:59:15 S 11 37 23.705 -52 59 13.27 L C51
2014-01-31 09:04:21 C 13 26 05.91 -79 27 54.9 u 807
2014-01-31 09:09:57 C 13 26 10.32 -79 28 12.9 u 807
2014-01-31 09:14:36 C 13 26 13.99 -79 28 28.0 u 807
2016-12-09 02:03:42 C 21 10 44.52 -06 21 56.2 o 291
2016-12-09 02:36:05 C 21 10 51.35 -06 21 33.0 o 291
2016-12-18 02:13:02 C 21 55 45.96 -03 44 29.5 o 291
2016-12-18 02:32:34 C 21 55 49.87 -03 44 15.3 o 291
2017-03-30 03:10:07 C 04 34 03.40 +14 05 48.3 o 291
2017-03-30 03:26:16 C 04 34 05.66 +14 05 49.0 o 291
2017-03-30 03:42:27 C 04 34 07.94 +14 05 49.4 o 291
2017-12-23 12:15:00 C 12 17 14.34 -15 58 08.8 U G96
2017-12-23 12:22:50 C 12 17 15.52 -15 58 24.4 U G96
2017-12-23 12:30:37 C 12 17 16.57 -15 58 40.4 U G96
2017-12-23 12:38:26 C 12 17 17.71 -15 58 56.2 U G96
2024-12-17 11:29:18 C 23 20 51.75 +04 40 31.0 V D29
2024-12-17 11:47:00 C 23 20 55.85 +04 40 25.7 V D29
2024-12-19 05:06:53 C 23 30 37.745 +04 27 14.57 X F51
2024-12-19 05:21:50 C 23 30 41.078 +04 27 09.70 X F51
2024-12-19 05:29:18 C 23 30 42.734 +04 27 07.39 X F51
2025-01-12 12:22:56 C 01 21 10.750 +02 09 24.27 O18
2025-01-12 13:13:07 C 01 21 18.231 +02 09 16.98 O18
2025-01-13 12:27:41 C 01 24 53.476 +02 05 58.29 O18
2025-01-13 13:23:02 C 01 25 01.632 +02 05 50.40 O18
2025-01-15 12:34:14 C 01 32 09.253 +01 59 32.98 O18
2025-01-15 13:36:29 C 01 32 18.083 +01 59 25.06 O18
2025-01-18 12:42:12 C 01 42 40.921 +01 50 58.72 O18
2025-01-18 14:34:48 C 01 42 56.454 +01 50 46.13 O18
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)