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
2016-02-04 22:43:01 C 05 15 28.29 +06 52 45.1 q 160
2016-02-05 22:51:04 C 05 14 36.69 +06 47 08.7 q 160
2016-02-05 22:54:06 C 05 14 36.58 +06 47 07.9 q 160
2016-02-05 22:56:45 C 05 14 36.50 +06 47 07.3 q 160
2016-02-07 03:49:20 C 05 13 40.11 +06 40 47.4 q 703
2016-02-07 03:55:07 C 05 13 39.93 +06 40 46.5 q 703
2016-02-07 04:00:54 C 05 13 39.77 +06 40 45.2 q 703
2016-02-07 04:06:40 C 05 13 39.54 +06 40 43.9 q 703
2016-02-22 13:22:37 S 05 09 11.38 +05 47 24.7 L C51
2016-02-22 16:31:29 S 05 09 12.56 +05 47 08.9 L C51
2016-02-22 19:40:10 S 05 09 13.63 +05 46 53.4 L C51
2016-02-23 00:23:17 S 05 09 15.56 +05 46 28.3 L C51
2016-02-23 00:49:02 C 05 09 15.66 +05 46 20.0 u H21
2016-02-23 00:51:33 C 05 09 15.67 +05 46 19.8 u H21
2016-02-23 00:54:11 C 05 09 15.68 +05 46 19.7 u H21
2016-02-23 00:56:35 C 05 09 15.70 +05 46 19.5 u H21
2016-02-23 00:59:06 C 05 09 15.71 +05 46 19.2 u H21
2016-02-23 01:01:37 C 05 09 15.72 +05 46 19.0 u H21
2016-02-23 01:04:08 C 05 09 15.73 +05 46 18.7 u H21
2016-02-23 01:06:39 C 05 09 15.74 +05 46 18.5 u H21
2016-02-23 01:09:10 C 05 09 15.75 +05 46 18.3 u H21
2016-02-23 01:11:41 C 05 09 15.78 +05 46 18.0 u H21
2016-02-23 01:14:12 C 05 09 15.77 +05 46 17.8 u H21
2016-02-23 01:16:43 C 05 09 15.78 +05 46 17.9 u H21
2016-02-23 01:20:51 C 05 09 15.80 +05 46 17.4 u H21
2016-02-23 03:32:09 S 05 09 16.82 +05 46 12.2 L C51
2016-02-23 05:06:35 S 05 09 17.46 +05 46 04.1 L C51
2016-02-23 06:40:51 S 05 09 18.14 +05 45 56.2 L C51
2016-02-23 09:49:42 S 05 09 19.57 +05 45 41.5 L C51
2016-02-23 12:58:24 S 05 09 21.00 +05 45 26.4 L C51
2016-02-23 16:07:15 S 05 09 22.51 +05 45 11.0 L C51
2016-02-25 00:46:37 C 05 09 40.96 +05 42 48.0 u 807
2016-02-25 00:48:42 C 05 09 40.97 +05 42 47.9 u 807
2016-02-25 00:50:47 C 05 09 40.99 +05 42 47.7 u 807
2016-02-25 00:52:51 C 05 09 41.01 +05 42 47.5 u 807
2016-02-25 00:54:56 C 05 09 41.03 +05 42 47.3 u 807
2016-02-25 14:06:24 C 05 09 49.88 +05 41 41.2 o 300
2016-02-25 14:15:23 C 05 09 49.93 +05 41 40.1 o 300
2016-02-25 14:19:52 C 05 09 49.99 +05 41 40.1 o 300
2016-02-25 14:24:24 C 05 09 50.05 +05 41 39.0 o 300
2016-02-25 14:28:52 C 05 09 50.13 +05 41 39.5 o 300
2016-02-26 05:50:12 C 05 10 02.264 +05 40 39.74 L F51
2016-02-26 06:08:36 C 05 10 02.464 +05 40 38.47 L F51
2016-02-26 06:26:52 C 05 10 02.646 +05 40 37.35 L F51
2016-02-26 06:45:08 C 05 10 02.875 +05 40 36.00 L F51
2016-03-01 02:20:52 C 05 11 37.86 +05 35 24.5 q H45
2016-03-01 02:22:19 C 05 11 37.89 +05 35 24.3 q H45
2016-03-01 02:24:07 C 05 11 37.95 +05 35 24.2 q H45
2016-03-01 20:29:04 C 05 12 01.43 +05 34 32.9 q 160
2016-03-01 20:31:22 C 05 12 01.47 +05 34 32.5 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)