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
2016-01-16 22:17:14 C 05 43 09.49 +09 29 59.8 q 160
2016-01-16 22:19:31 C 05 43 09.31 +09 29 59.1 q 160
2016-01-16 22:21:49 C 05 43 09.11 +09 29 57.6 q 160
2016-01-17 22:55:29 C 05 41 09.60 +09 19 05.0 q 160
2016-01-17 22:56:38 C 05 41 09.51 +09 19 04.4 q 160
2016-01-19 02:20:00 C 05 39 00.22 +09 07 16.1 u H21
2016-01-19 02:23:46 C 05 38 59.92 +09 07 14.4 u H21
2016-01-19 02:27:33 C 05 38 59.63 +09 07 13.0 u H21
2016-01-19 02:31:20 C 05 38 59.31 +09 07 11.4 u H21
2016-01-19 02:35:06 C 05 38 59.02 +09 07 09.8 u H21
2016-01-19 02:38:53 C 05 38 58.71 +09 07 08.3 u H21
2016-01-19 02:42:40 C 05 38 58.40 +09 07 06.7 u H21
2016-01-19 02:46:49 C 05 38 58.07 +09 07 05.0 u H21
2016-01-21 22:24:47 C 05 33 54.01 +08 39 15.8 q 160
2016-01-21 22:27:06 C 05 33 53.84 +08 39 15.1 q 160
2016-01-21 22:29:25 C 05 33 53.67 +08 39 14.1 q 160
2016-01-23 22:28:53 C 05 30 33.42 +08 20 45.7 q 160
2016-01-23 22:31:09 C 05 30 33.30 +08 20 44.8 q 160
2016-01-23 22:33:24 C 05 30 33.15 +08 20 43.9 q 160
2016-01-24 02:32:50 C 05 30 17.46 +08 19 15.5 u H21
2016-01-24 02:35:46 C 05 30 17.26 +08 19 14.5 u H21
2016-01-24 02:38:43 C 05 30 17.05 +08 19 13.4 u H21
2016-01-24 02:41:39 C 05 30 16.84 +08 19 12.1 u H21
2016-01-24 02:44:58 C 05 30 16.61 +08 19 10.9 u H21
2016-01-24 02:48:51 C 05 30 16.34 +08 19 09.3 u H21
2016-01-24 02:52:21 C 05 30 16.11 +08 19 08.0 u H21
2016-01-24 02:55:18 C 05 30 15.90 +08 19 07.0 u H21
2016-01-24 02:58:14 C 05 30 15.69 +08 19 05.9 u H21
2016-01-24 03:01:10 C 05 30 15.50 +08 19 05.0 u H21
2016-01-24 03:04:07 C 05 30 15.30 +08 19 03.8 u H21
2016-01-24 03:07:03 C 05 30 15.09 +08 19 02.3 u H21
2016-01-24 03:11:03 C 05 30 14.81 +08 19 00.9 u H21
2016-01-28 03:23:19 C 05 24 17.25 +07 45 28.2 q H45
2016-01-28 03:25:08 C 05 24 17.15 +07 45 27.7 q H45
2016-01-28 03:26:42 C 05 24 17.06 +07 45 27.1 q H45
2016-01-28 03:28:29 C 05 24 16.94 +07 45 26.4 q H45
2016-01-28 03:29:38 C 05 24 16.87 +07 45 26.2 q H45
2016-01-28 03:31:06 C 05 24 16.79 +07 45 25.6 q H45
2016-02-02 17:56:59 C 05 17 34.59 +07 05 56.2 o C41
2016-02-02 18:07:47 C 05 17 34.12 +07 05 53.2 o C41
2016-02-03 08:44:52 C 05 16 57.16 +07 02 10.7 L T05
2016-02-03 09:19:06 C 05 16 55.67 +07 02 01.4 L T05
2016-02-03 09:53:18 C 05 16 54.18 +07 01 52.8 L T05
2016-02-03 10:27:35 C 05 16 52.72 +07 01 43.7 L T05
2016-02-04 08:40:22 C 05 16 00.07 +06 56 12.0 L T05
2016-02-04 09:14:24 C 05 15 58.70 +06 56 03.6 L T05
2016-02-04 09:48:29 C 05 15 57.31 +06 55 55.2 L T05
2016-02-04 10:22:44 C 05 15 56.03 +06 55 46.6 L T05
2016-02-04 22:37:28 C 05 15 28.49 +06 52 46.3 q 160
2016-02-04 22:40:15 C 05 15 28.41 +06 52 45.8 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)