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
2018-07-31 01:02:20 C 01 57 39.01 +34 22 56.6 q 160
2018-07-31 01:06:25 C 01 57 39.14 +34 22 58.7 q 160
2018-08-01 01:44:55 C 01 58 34.72 +34 36 34.7 q 160
2018-08-01 01:48:45 C 01 58 34.85 +34 36 37.2 q 160
2018-08-01 01:52:35 C 01 58 35.08 +34 36 39.4 q 160
2018-08-05 01:32:10 S 02 01 48.960 +35 27 49.72 L C51
2018-08-05 23:31:18 S 02 02 28.584 +35 39 13.07 L C51
2018-08-06 02:25:09 C 02 02 34.21 +35 40 44.1 q 160
2018-08-06 02:28:59 C 02 02 34.36 +35 40 46.3 q 160
2018-08-06 02:32:48 C 02 02 34.46 +35 40 48.4 q 160
2018-08-18 14:05:24 C 02 07 58.17 +38 00 30.4 U T05
2018-08-18 14:20:08 C 02 07 58.24 +38 00 36.5 U T05
2018-08-18 14:34:46 C 02 07 58.27 +38 00 42.4 U T05
2018-08-18 14:47:30 C 02 07 58.34 +38 00 47.6 U T05
2018-08-22 13:47:34 C 02 08 09.04 +38 38 13.4 U T05
2018-08-22 14:16:47 C 02 08 08.90 +38 38 24.3 U T05
2018-08-22 14:29:30 C 02 08 08.81 +38 38 29.3 U T05
2018-08-30 13:13:03 C 02 05 59.17 +39 41 09.1 U T05
2018-08-30 13:27:23 C 02 05 58.85 +39 41 12.6 U T05
2018-08-30 13:42:04 C 02 05 58.47 +39 41 16.5 U T05
2018-08-30 13:45:24 C 02 05 58.44 +39 41 17.4 U T05
2018-08-30 13:55:05 C 02 05 58.18 +39 41 20.7 U T05
2018-09-05 10:01:30 C 02 02 05.94 +40 14 24.5 V 703
2018-09-05 10:09:40 C 02 02 05.62 +40 14 25.8 V 703
2018-09-05 10:17:32 C 02 02 05.31 +40 14 27.5 V 703
2018-09-05 10:25:32 C 02 02 05.00 +40 14 28.9 V 703
2018-09-05 13:01:13 C 02 01 59.67 +40 15 00.5 U T08
2018-09-05 13:16:55 C 02 01 59.09 +40 15 03.7 U T08
2018-09-05 13:33:11 C 02 01 58.44 +40 15 06.6 U T08
2018-09-05 13:47:37 C 02 01 57.90 +40 15 09.0 U T08
2018-09-08 08:34:54 C 01 59 23.90 +40 26 02.4 V 703
2018-09-08 08:41:56 C 01 59 23.62 +40 26 03.5 V 703
2018-09-08 08:48:56 C 01 59 23.36 +40 26 04.7 V 703
2018-09-08 08:55:57 C 01 59 22.98 +40 26 05.0 V 703
2018-09-09 13:21:09 C 01 58 08.83 +40 29 44.2 U T08
2018-09-09 13:33:52 C 01 58 08.24 +40 29 45.5 U T08
2018-09-09 13:46:37 C 01 58 07.61 +40 29 46.9 U T08
2018-09-09 13:59:19 C 01 58 07.01 +40 29 48.8 U T08
2018-09-11 08:42:12 C 01 56 07.09 +40 33 56.6 V 703
2018-09-11 08:49:47 C 01 56 06.71 +40 33 57.5 V 703
2018-09-11 08:57:22 C 01 56 06.32 +40 33 57.9 V 703
2018-09-11 09:04:57 C 01 56 05.92 +40 33 58.8 V 703
2018-09-11 12:45:44 C 01 55 54.95 +40 34 17.6 U T05
2018-09-11 12:57:48 C 01 55 54.31 +40 34 18.6 U T05
2018-09-11 13:12:43 C 01 55 53.54 +40 34 19.9 U T05
2018-09-11 13:27:14 C 01 55 52.78 +40 34 20.9 U T05
2018-09-13 12:38:17 C 01 53 26.43 +40 36 57.2 U T08
2018-09-13 12:52:00 C 01 53 25.65 +40 36 57.6 U T08
2018-09-13 13:07:17 C 01 53 24.80 +40 36 57.7 U T08
2018-09-13 13:23:16 C 01 53 23.83 +40 36 58.7 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)