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
2016-08-25 19:46:35 C 17 50 13.28 +26 55 47.6 q 160
2016-08-25 19:48:16 C 17 50 13.71 +26 55 45.3 q 160
2016-08-25 19:48:33 C 17 50 13.71 +26 55 45.3 q 160
2016-08-25 20:57:44 C 17 50 28.45 +26 54 33.2 q G34
2016-08-25 21:01:56 C 17 50 29.43 +26 54 30.1 q G34
2016-08-25 21:06:08 C 17 50 30.37 +26 54 26.5 q G34
2016-08-25 21:10:20 C 17 50 31.23 +26 54 22.7 q G34
2016-08-26 07:37:17 C 17 52 47.66 +26 44 23.8 L T05
2016-08-26 07:52:58 C 17 52 50.94 +26 44 08.2 L T05
2016-08-26 07:58:15 C 17 52 52.06 +26 44 02.9 L T05
2016-08-26 08:19:19 C 17 52 56.47 +26 43 41.8 L T05
2016-08-26 19:16:52 C 17 55 18.39 +26 32 52.2 q 006
2016-08-26 19:19:23 C 17 55 18.94 +26 32 49.7 q 006
2016-08-26 19:23:07 C 17 55 19.71 +26 32 45.9 q 006
2016-08-26 19:28:07 C 17 55 20.76 +26 32 41.0 q 006
2016-08-26 19:33:08 C 17 55 21.78 +26 32 36.8 q 006
2016-08-26 19:47:33 C 17 55 24.69 +26 32 20.6 q 160
2016-08-26 19:47:50 C 17 55 24.69 +26 32 20.6 q 160
2016-08-26 19:49:39 C 17 55 25.13 +26 32 18.5 q 160
2016-08-26 19:49:56 C 17 55 25.13 +26 32 18.5 q 160
2016-08-26 19:51:45 C 17 55 25.56 +26 32 16.4 q 160
2016-08-26 19:52:02 C 17 55 25.56 +26 32 16.4 q 160
2016-08-26 20:02:00 C 17 55 27.58 +26 32 06.6 16.4 q K78
2016-08-26 21:05:38 C 17 55 40.81 +26 31 03.7 15.9 q K78
2016-08-27 19:18:48 C 18 00 20.48 +26 09 17.4 q 006
2016-08-27 19:26:18 C 18 00 21.87 +26 09 11.5 q 006
2016-08-27 19:30:04 C 18 00 22.75 +26 09 06.3 q 006
2016-08-27 19:32:33 C 18 00 23.24 +26 09 03.5 q 006
2016-08-27 19:36:19 C 18 00 23.96 +26 08 59.9 q 006
2016-08-28 19:34:45 C 18 05 15.83 +25 45 23.0 q 160
2016-08-28 19:35:35 C 18 05 16.19 +25 45 22.9 q 006
2016-08-28 19:37:05 C 18 05 16.28 +25 45 20.6 q 160
2016-08-28 19:39:25 C 18 05 16.71 +25 45 18.0 q 160
2016-08-28 19:40:35 C 18 05 17.14 +25 45 17.6 q 006
2016-08-28 19:51:50 C 18 05 19.41 +25 45 07.2 q 006
2016-08-29 21:17:59 C 18 10 19.28 +25 19 58.2 q Z80
2016-08-29 21:20:09 C 18 10 19.69 +25 19 55.9 q Z80
2016-08-29 21:22:20 C 18 10 20.11 +25 19 53.8 q Z80
2016-08-29 21:24:29 C 18 10 20.51 +25 19 51.8 q Z80
2016-08-29 21:26:40 C 18 10 20.94 +25 19 49.4 q Z80
2016-08-29 21:33:10 C 18 10 22.15 +25 19 43.0 q Z80
2016-08-29 21:35:20 C 18 10 22.57 +25 19 40.9 q Z80
2016-08-29 21:37:30 C 18 10 22.98 +25 19 38.6 q Z80
2016-08-31 19:07:05 C 18 18 57.76 +24 34 56.1 q 006
2016-08-31 19:11:34 C 18 18 58.55 +24 34 50.9 q 006
2016-08-31 19:14:35 C 18 18 59.10 +24 34 48.4 q 006
2016-08-31 19:22:05 C 18 19 00.45 +24 34 40.8 q 006
2016-08-31 19:25:05 C 18 19 00.99 +24 34 38.3 q 006
2016-09-01 19:32:15 C 18 23 22.39 +24 10 58.3 16.0 q K78
2016-09-01 20:51:21 C 18 23 36.13 +24 09 40.2 16.3 q K78
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)