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
2016-11-15 18:50:33 C 21 40 33.66 +08 06 25.6 q 160
2016-11-15 18:53:34 C 21 40 33.97 +08 06 26.2 q 160
2016-11-22 01:02:30 C 21 53 27.56 +07 55 29.2 q H45
2016-11-22 01:04:11 C 21 53 27.73 +07 55 28.8 q H45
2016-11-22 01:05:51 C 21 53 27.84 +07 55 28.8 q H45
2016-11-22 01:07:20 C 21 53 27.98 +07 55 28.7 q H45
2016-11-22 01:08:54 C 21 53 28.13 +07 55 28.7 q H45
2016-11-22 01:10:21 C 21 53 28.25 +07 55 28.6 q H45
2016-12-25 05:04:29 C 22 59 38.609 +08 51 30.24 L F51
2016-12-25 05:20:35 C 22 59 39.902 +08 51 32.74 L F51
2016-12-25 05:36:43 C 22 59 41.188 +08 51 35.64 L F51
2016-12-25 05:52:48 C 22 59 42.494 +08 51 38.33 L F51
2016-12-30 10:57:50 C 23 09 51.73 +09 13 59.1 q D29
2016-12-30 11:18:12 C 23 09 53.46 +09 14 03.8 q D29
2016-12-30 11:38:35 C 23 09 55.04 +09 14 06.6 q D29
2016-12-31 10:47:09 C 23 11 47.57 +09 18 34.0 q D29
2016-12-31 11:06:14 C 23 11 48.99 +09 18 38.5 q D29
2016-12-31 11:07:31 C 23 11 49.12 +09 18 39.0 q D29
2016-12-31 11:26:36 C 23 11 50.69 +09 18 43.0 q D29
2017-10-24 11:40:52 C 09 09 59.13 +10 01 52.8 U 703
2017-10-24 11:48:52 C 09 09 59.77 +10 01 46.1 U 703
2017-10-24 11:56:48 C 09 10 00.46 +10 01 39.6 U 703
2017-10-24 12:04:42 C 09 10 01.08 +10 01 34.9 U 703
2017-10-27 19:51:58 C 09 16 49.46 +09 01 16.8 q D29
2017-10-27 20:14:53 C 09 16 51.40 +09 00 58.9 q D29
2017-10-27 20:37:47 C 09 16 53.33 +09 00 41.4 q D29
2017-10-29 11:41:27 C 09 20 13.68 +08 30 11.5 U 703
2017-10-29 11:56:36 C 09 20 14.94 +08 29 58.8 U 703
2017-10-29 12:04:09 C 09 20 15.60 +08 29 52.0 U 703
2017-11-17 11:46:51 C 10 00 02.14 +01 39 21.0 U G96
2017-11-17 11:53:00 C 10 00 02.69 +01 39 14.7 U G96
2017-11-17 11:59:09 C 10 00 03.23 +01 39 08.4 U G96
2017-11-17 12:05:17 C 10 00 03.77 +01 39 02.2 U G96
2017-11-25 11:39:12 C 10 17 33.33 -01 48 25.9 U G96
2017-11-25 11:47:19 C 10 17 34.09 -01 48 35.3 U G96
2017-11-25 11:54:08 C 10 17 34.71 -01 48 43.1 U G96
2017-11-25 12:00:56 C 10 17 35.33 -01 48 50.8 U G96
2017-11-25 13:46:50 C 10 17 45.39 -01 50 51.8 U T05
2017-11-25 14:10:35 C 10 17 47.56 -01 51 19.1 U T05
2017-11-25 14:36:30 C 10 17 49.92 -01 51 48.0 U T05
2017-11-25 14:49:09 C 10 17 51.04 -01 52 02.5 U T05
2017-11-25 15:14:27 C 10 17 53.34 -01 52 31.9 U T05
2017-11-27 10:28:55 C 10 21 56.78 -02 42 49.2 U 703
2017-11-27 10:36:38 C 10 21 57.46 -02 42 57.7 U 703
2017-11-27 10:44:21 C 10 21 58.15 -02 43 06.9 U 703
2017-11-27 10:52:04 C 10 21 58.86 -02 43 15.7 U 703
2017-12-04 19:24:40 S 10 39 03.526 -06 22 27.70 L C51
2017-12-05 13:48:50 C 10 40 54.54 -06 46 45.9 U T08
2017-12-05 14:00:10 C 10 40 55.55 -06 47 01.6 U T08
2017-12-05 14:11:32 C 10 40 56.66 -06 47 17.1 U T08
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)