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
2009-10-13 19:15:46 C 22 52 34.20 +28 33 30.3 v 434
2009-10-13 19:17:41 C 22 52 34.10 +28 33 27.6 v 434
2009-10-13 19:19:30 C 22 52 34.10 +28 33 26.2 v 434
2009-10-13 21:56:03 C 22 52 30.89 +28 30 40.8 w 160
2009-10-13 21:59:55 C 22 52 30.82 +28 30 36.8 w 160
2009-10-13 22:03:31 C 22 52 30.74 +28 30 32.9 w 160
2009-10-14 16:46:31 C 22 52 11.998 +28 10 46.5 r 168
2009-10-14 16:47:55 C 22 52 11.974 +28 10 44.8 r 168
2009-10-14 16:48:59 C 22 52 11.927 +28 10 43.5 r 168
2009-10-14 16:50:20 C 22 52 11.886 +28 10 42.3 r 168
2009-10-14 16:51:36 C 22 52 11.906 +28 10 40.9 r 168
2009-10-14 16:52:45 C 22 52 11.878 +28 10 40.1 r 168
2009-10-14 16:54:05 C 22 52 11.824 +28 10 38.2 r 168
2009-10-14 16:55:15 C 22 52 11.784 +28 10 37.3 r 168
2009-10-14 16:56:30 C 22 52 11.783 +28 10 35.7 r 168
2009-10-14 16:57:40 C 22 52 11.758 +28 10 34.7 r 168
2009-10-14 19:24:41 C 22 52 09.196 +28 08 00.1 r 168
2009-10-14 19:25:40 C 22 52 09.172 +28 07 58.5 r 168
2009-10-14 19:26:45 C 22 52 09.162 +28 07 57.9 r 168
2009-10-14 19:28:00 C 22 52 09.126 +28 07 56.3 r 168
2009-10-14 19:29:00 C 22 52 09.094 +28 07 55.8 r 168
2009-10-14 19:30:00 C 22 52 09.113 +28 07 54.6 r 168
2009-10-14 19:31:05 C 22 52 09.065 +28 07 52.9 r 168
2009-10-14 19:32:05 C 22 52 09.044 +28 07 52.8 r 168
2009-10-14 19:33:05 C 22 52 09.022 +28 07 50.8 r 168
2009-10-14 22:25:35 C 22 52 06.07 +28 04 51.1 17.4 o C20
2009-10-14 22:28:43 C 22 52 06.02 +28 04 47.8 17.4 o C20
2009-10-14 22:30:25 C 22 52 06.094 +28 04 44.1 r 168
2009-10-14 22:31:20 C 22 52 06.034 +28 04 42.3 r 168
2009-10-14 22:33:15 C 22 52 06.028 +28 04 40.7 r 168
2009-10-14 22:34:30 C 22 52 05.991 +28 04 38.8 r 168
2009-10-14 22:35:50 C 22 52 05.990 +28 04 37.4 r 168
2009-10-14 22:37:00 C 22 52 05.977 +28 04 36.8 r 168
2009-10-14 22:38:20 C 22 52 05.883 +28 04 35.3 r 168
2009-10-14 22:39:35 C 22 52 05.928 +28 04 33.7 r 168
2009-10-14 22:40:45 C 22 52 05.922 +28 04 32.5 r 168
2009-10-14 22:42:00 C 22 52 05.859 +28 04 30.9 r 168
2009-10-14 22:46:45 C 22 52 05.815 +28 04 25.5 r 168
2009-10-15 03:48:40 C 22 52 01.77 +27 59 16.5 r 703
2009-10-15 03:57:23 C 22 52 01.59 +27 59 07.7 r 703
2009-10-15 04:06:04 C 22 52 01.41 +27 58 58.5 r 703
2009-10-15 04:14:53 C 22 52 01.30 +27 58 49.0 r 703
2009-10-16 00:11:06 C 22 51 43.89 +27 37 58.3 17.4 o C20
2009-10-16 00:14:12 C 22 51 43.85 +27 37 54.8 17.4 o C20
2009-10-22 19:03:43 C 22 50 47.57 +24 56 21.6 o 196
2009-10-22 19:26:56 C 22 50 47.57 +24 55 59.7 o 196
2009-10-24 19:49:17 C 22 50 56.42 +24 11 10.3 w 160
2009-10-24 19:52:07 C 22 50 56.41 +24 11 07.2 w 160
2009-10-24 19:54:09 C 22 50 56.40 +24 11 05.2 w 160
2009-10-26 18:43:57 C 22 51 15.51 +23 29 12.5 w 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)