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
2025-09-16 10:27:11 C 23 15 16.498 +39 38 13.67 V T08
2025-09-16 10:47:21 C 23 15 14.784 +39 37 55.27 V T08
2025-09-16 10:52:59 C 23 15 14.314 +39 37 50.16 V T08
2025-09-17 10:16:45 C 23 13 23.263 +39 16 28.96 V T05
2025-09-17 10:21:19 C 23 13 22.874 +39 16 24.67 V T05
2025-09-17 10:35:54 C 23 13 21.670 +39 16 10.92 V T05
2025-09-17 10:46:09 C 23 13 20.837 +39 16 01.49 V T05
2025-09-17 21:01:54 B 23 12 33.660 +39 06 21.35 Z R68
2025-09-17 21:03:52 B 23 12 33.516 +39 06 19.51 Z R68
2025-09-17 21:05:26 B 23 12 33.398 +39 06 18.07 Z R68
2025-09-17 23:07:01 B 23 12 23.46 +39 04 25.9 V R99
2025-09-17 23:13:37 B 23 12 22.91 +39 04 19.4 V R99
2025-09-17 23:20:01 B 23 12 22.43 +39 04 13.2 V R99
2025-09-18 08:57:11 C 23 11 38.580 +38 55 13.61 X F52
2025-09-18 09:26:56 C 23 11 36.179 +38 54 45.51 X F52
2025-09-18 09:41:46 C 23 11 34.986 +38 54 31.50 X F52
2025-09-18 19:02:40 B 23 10 53.179 +38 45 29.02 V 160
2025-09-18 19:07:54 B 23 10 52.778 +38 45 23.90 V 160
2025-09-18 19:12:56 B 23 10 52.366 +38 45 19.01 V 160
2025-09-18 21:04:28 B 23 10 43.800 +38 43 32.70 Z R68
2025-09-18 21:07:32 B 23 10 43.531 +38 43 29.82 Z R68
2025-09-18 21:10:30 B 23 10 43.330 +38 43 26.90 Z R68
2025-09-18 21:42:16 C 23 10 40.745 +38 42 55.73 Z C23
2025-09-19 00:07:29 B 23 10 29.32 +38 40 37.6 V R99
2025-09-19 00:10:53 B 23 10 29.07 +38 40 34.3 V R99
2025-09-19 00:14:22 B 23 10 28.79 +38 40 30.8 V R99
2025-09-19 00:22:45 C 23 10 28.274 +38 40 21.14 Z C23
2025-09-19 10:48:53 C 23 09 41.729 +38 30 21.56 V T05
2025-09-19 11:03:04 C 23 09 40.613 +38 30 07.67 V T05
2025-09-19 11:32:29 C 23 09 38.318 +38 29 38.62 V T05
2025-09-19 18:59:26 C 23 09 06.636 +38 22 13.04 Z C23
2025-09-19 20:21:18 C 23 09 00.487 +38 20 54.17 Z C23
2025-09-19 21:27:10 C 23 08 55.514 +38 19 50.02 Z C23
2025-09-21 18:56:47 B 23 05 43.546 +37 34 11.96 V 160
2025-09-21 19:01:16 B 23 05 43.224 +37 34 07.50 V 160
2025-09-21 19:05:32 B 23 05 42.917 +37 34 03.25 V 160
2025-09-21 19:30:39 C 23 05 41.114 +37 33 35.93 Z C23
2025-09-21 20:23:28 C 23 05 37.421 +37 32 42.94 Z C23
2025-09-21 21:21:25 C 23 05 32.873 +37 31 45.80 q S89
2025-09-21 21:22:58 C 23 05 32.736 +37 31 44.29 q S89
2025-09-21 21:24:28 C 23 05 32.633 +37 31 42.49 q S89
2025-09-21 21:26:00 C 23 05 32.522 +37 31 41.27 q S89
2025-09-21 21:30:09 C 23 05 32.225 +37 31 37.56 q S89
2025-09-22 22:43:20 C 23 03 51.242 +37 05 33.50 q S89
2025-09-22 22:44:51 C 23 03 51.122 +37 05 31.88 q S89
2025-09-22 22:46:23 C 23 03 51.038 +37 05 30.19 q S89
2025-09-22 22:47:54 C 23 03 50.930 +37 05 28.93 q S89
2025-09-22 22:49:26 C 23 03 50.822 +37 05 27.02 q S89
2025-09-23 07:28:43 C 23 03 17.348 +36 56 27.89 V 703
2025-09-23 07:32:04 C 23 03 17.107 +36 56 24.65 V 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)