16834 (1997 WU22)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4421590203 ± 5.06e-09
Semi-major axis (a)1.4679035853 AU ± 1.60e-10
Inclination (i)15.99741496° ± 7.43e-07
Long. of Asc. Node (Ω)260.74744858° ± 2.68e-06
Arg. of Perihelion (ω)334.40245930° ± 2.68e-06
Mean Anomaly (M)109.14249919° ± 9.50e-07
Mean Motion (n)0.5541993082°/day ± 9.06e-11
Perihelion dist (q)0.81885677 AU ± 7.42e-09
Aphelion dist (Q)2.11695040 AU ± 7.42e-09
Orbital Period1.77846899 yr ± 2.91e-10
Physical Parameters
H (abs. magnitude)15.75
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.237″
Uncertainty0
Orbit TypeApollo
MOID0.147093 AU
Observations Used4437
Radar Obs Used1
Gaia Obs Used67
Oppositions12
Arc Total1988-2025
First Observation Used1988-10-08
Last Observation Used2025-12-16
Observations (4859)
Date Type RA Dec Mag Band Observatory
2018-05-23 10:52:51 C 23 59 06.28 +12 01 05.2 U 703
2018-05-23 10:58:04 C 23 59 06.77 +12 01 12.1 U 703
2018-05-24 10:55:57 C 00 01 25.70 +12 28 28.6 18.7 U G84
2018-05-24 11:11:41 C 00 01 27.19 +12 28 47.8 18.9 U G84
2018-06-06 10:06:57 C 00 30 07.68 +17 57 25.8 U 703
2018-06-06 10:15:47 C 00 30 08.47 +17 57 34.2 U 703
2018-06-06 10:24:36 C 00 30 09.24 +17 57 43.4 U 703
2018-06-06 10:33:26 C 00 30 09.99 +17 57 51.9 U 703
2018-06-13 10:13:32 C 00 44 34.20 +20 37 06.8 U 703
2018-06-13 10:20:30 C 00 44 34.72 +20 37 13.9 U 703
2018-06-13 10:27:28 C 00 44 35.29 +20 37 19.9 U 703
2018-06-13 10:34:26 C 00 44 35.95 +20 37 25.2 U 703
2018-06-19 02:19:57 C 00 55 40.83 +22 38 01.7 q 160
2018-06-19 02:23:21 C 00 55 40.99 +22 38 04.3 q 160
2018-06-19 02:26:45 C 00 55 41.23 +22 38 07.0 q 160
2018-06-20 10:39:25 C 00 58 14.33 +23 05 43.0 U 703
2018-06-20 10:46:31 C 00 58 14.91 +23 05 49.5 U 703
2018-06-20 10:53:39 C 00 58 15.49 +23 05 55.8 U 703
2018-06-20 11:00:46 C 00 58 16.01 +23 06 01.7 U 703
2018-06-23 10:31:07 C 01 03 49.07 +24 05 52.7 U 703
2018-06-23 10:38:02 C 01 03 49.61 +24 05 58.2 U 703
2018-06-23 10:44:59 C 01 03 50.15 +24 06 04.1 U 703
2018-06-23 10:51:55 C 01 03 50.65 +24 06 10.3 U 703
2018-06-24 02:38:18 C 01 05 02.75 +24 19 04.7 q 160
2018-06-24 02:41:49 C 01 05 03.06 +24 19 08.0 q 160
2018-06-24 10:06:56 C 01 05 36.98 +24 25 13.3 U 703
2018-06-24 10:13:57 C 01 05 37.49 +24 25 18.7 U 703
2018-06-24 10:20:57 C 01 05 38.03 +24 25 24.9 U 703
2018-06-24 10:27:57 C 01 05 38.57 +24 25 30.7 U 703
2018-07-02 10:06:46 C 01 19 35.45 +26 55 37.0 U 703
2018-07-02 10:15:02 C 01 19 36.02 +26 55 44.0 U 703
2018-07-02 10:31:33 C 01 19 37.20 +26 55 55.2 U 703
2018-07-03 10:06:41 C 01 21 15.15 +27 13 34.6 U 703
2018-07-03 10:13:45 C 01 21 15.61 +27 13 39.5 U 703
2018-07-03 10:20:48 C 01 21 16.08 +27 13 45.2 U 703
2018-07-03 10:27:52 C 01 21 16.48 +27 13 49.4 U 703
2018-07-06 09:58:58 C 01 26 06.38 +28 06 16.4 U G96
2018-07-06 10:05:52 C 01 26 06.82 +28 06 21.6 U G96
2018-07-06 10:12:46 C 01 26 07.29 +28 06 26.7 U G96
2018-07-06 10:32:45 C 01 26 08.56 +28 06 41.6 U G96
2018-07-10 01:48:42 C 01 31 46.57 +29 08 33.2 q 160
2018-07-10 01:52:41 C 01 31 46.81 +29 08 35.9 q 160
2018-07-10 01:56:40 C 01 31 47.07 +29 08 38.6 q 160
2018-07-19 02:14:18 C 01 44 23.53 +31 32 27.7 q 160
2018-07-19 02:16:07 C 01 44 23.63 +31 32 28.7 q 160
2018-07-19 02:17:54 C 01 44 23.73 +31 32 29.9 q 160
2018-07-20 01:49:35 C 01 45 38.46 +31 47 20.2 q 160
2018-07-20 01:53:35 C 01 45 38.66 +31 47 22.4 q 160
2018-07-20 01:57:35 C 01 45 38.88 +31 47 25.1 q 160
2018-07-31 00:58:16 C 01 57 38.80 +34 22 52.2 q 160
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2000-07-22 21:46:00 226599087.9 12 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)