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
2017-12-17 14:08:23 C 11 11 43.39 -13 43 35.4 U T08
2017-12-17 16:55:19 S 11 12 02.01 -13 47 50.9 L C51
2017-12-17 20:03:49 S 11 12 23.67 -13 52 48.0 L C51
2017-12-18 02:20:49 S 11 13 07.22 -14 02 43.6 L C51
2017-12-18 05:29:19 S 11 13 29.11 -14 07 43.8 L C51
2017-12-18 05:29:30 S 11 13 28.94 -14 07 42.7 L C51
2017-12-18 11:46:31 S 11 14 12.804 -14 17 42.04 L C51
2017-12-18 14:55:00 S 11 14 34.781 -14 22 42.49 L C51
2017-12-18 18:03:31 S 11 14 56.741 -14 27 43.38 L C51
2017-12-18 21:12:01 S 11 15 18.653 -14 32 43.80 L C51
2017-12-19 00:20:31 S 11 15 40.800 -14 37 46.99 L C51
2017-12-19 00:20:42 S 11 15 40.822 -14 37 45.95 L C51
2017-12-19 06:37:42 S 11 16 25.046 -14 47 51.32 L C51
2017-12-23 11:13:53 C 11 28 38.97 -17 34 33.4 U G96
2017-12-23 11:21:36 C 11 28 39.91 -17 34 46.6 U G96
2017-12-23 11:29:18 C 11 28 40.87 -17 34 59.7 U G96
2017-12-23 11:37:01 C 11 28 41.83 -17 35 12.9 U G96
2017-12-26 15:06:57 C 11 38 27.208 -19 46 13.98 U F51
2017-12-26 15:32:59 C 11 38 30.588 -19 47 00.01 U F51
2017-12-26 15:46:00 C 11 38 32.280 -19 47 23.08 U F51
2018-01-03 13:59:14 C 12 06 01.32 -25 39 15.9 U T05
2018-01-03 14:22:17 C 12 06 04.89 -25 40 01.2 U T05
2018-01-03 14:32:59 C 12 06 06.50 -25 40 21.4 U T05
2018-01-03 14:36:55 C 12 06 07.11 -25 40 28.9 U T05
2018-01-04 14:27:16 C 12 09 55.219 -26 26 32.43 U F51
2018-01-04 14:41:59 C 12 09 57.547 -26 27 00.98 U F51
2018-01-04 14:56:44 C 12 09 59.882 -26 27 29.79 U F51
2018-01-04 15:11:26 C 12 10 02.182 -26 27 58.31 U F51
2018-01-09 14:15:06 C 12 30 31.05 -30 22 52.5 U T08
2018-01-09 14:26:19 C 12 30 33.08 -30 23 15.6 U T08
2018-01-09 14:31:35 C 12 30 34.02 -30 23 26.1 U T08
2018-01-09 14:46:06 C 12 30 36.65 -30 23 55.0 U T08
2018-01-11 14:24:56 C 12 39 35.65 -31 59 29.1 U T05
2018-01-11 14:47:23 C 12 39 39.90 -32 00 14.3 U T05
2018-01-11 14:58:38 C 12 39 42.07 -32 00 37.0 U T05
2018-01-13 14:24:25 C 12 49 09.53 -33 36 01.8 U T08
2018-01-13 14:35:38 C 12 49 11.78 -33 36 25.2 U T08
2018-01-13 14:54:06 C 12 49 15.49 -33 37 02.1 U T08
2018-01-16 14:11:55 C 13 04 32.439 -35 59 56.28 U F51
2018-01-16 14:26:55 C 13 04 35.745 -36 00 26.45 U F51
2018-01-16 14:41:55 C 13 04 39.038 -36 00 56.41 U F51
2018-01-17 15:15:02 C 13 10 13.93 -36 49 41.4 U T08
2018-01-17 15:29:33 C 13 10 17.21 -36 50 10.5 U T08
2018-01-17 15:46:27 C 13 10 21.04 -36 50 43.9 U T08
2018-01-17 16:03:51 C 13 10 24.97 -36 51 18.6 U T08
2018-05-18 02:22:13 C 23 46 25.56 +09 29 27.3 q 160
2018-05-18 02:25:39 C 23 46 25.86 +09 29 31.5 q 160
2018-05-18 02:28:28 C 23 46 26.07 +09 29 36.0 q 160
2018-05-23 10:42:24 C 23 59 05.28 +12 00 53.4 U 703
2018-05-23 10:47:38 C 23 59 05.79 +12 00 59.1 U 703
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)