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
2025-08-03 08:59:17 C 00 38 48.30 +41 56 33.8 q U55
2025-08-04 12:31:34 C 00 37 41.033 +42 11 57.88 V T05
2025-08-04 12:34:14 C 00 37 40.920 +42 11 59.57 V T05
2025-08-04 12:38:15 C 00 37 40.721 +42 12 01.76 V T05
2025-08-04 13:02:09 C 00 37 39.598 +42 12 15.05 V T05
2025-08-04 22:32:35 B 00 37 15.44 +42 17 13.1 X L76
2025-08-04 22:37:46 B 00 37 15.21 +42 17 16.4 X L76
2025-08-04 22:42:58 B 00 37 14.96 +42 17 19.0 X L76
2025-08-04 22:48:09 B 00 37 14.75 +42 17 21.8 X L76
2025-08-04 22:53:20 B 00 37 14.50 +42 17 24.6 X L76
2025-08-04 22:58:31 B 00 37 14.26 +42 17 27.4 X L76
2025-08-05 22:40:21 C 00 36 11.299 +42 29 42.40 Z C23
2025-08-05 23:04:32 C 00 36 10.126 +42 29 54.96 Z C23
2025-08-05 23:31:29 B 00 36 08.51 +42 30 13.0 X L76
2025-08-05 23:36:40 B 00 36 08.24 +42 30 15.7 X L76
2025-08-05 23:41:51 B 00 36 08.00 +42 30 18.3 X L76
2025-08-05 23:47:02 B 00 36 07.73 +42 30 21.0 X L76
2025-08-05 23:52:14 B 00 36 07.48 +42 30 23.6 X L76
2025-08-05 23:57:25 B 00 36 07.21 +42 30 26.3 X L76
2025-08-06 11:57:19 C 00 35 34.094 +42 36 32.44 V T08
2025-08-06 11:58:39 C 00 35 34.020 +42 36 33.19 V T08
2025-08-06 12:01:26 C 00 35 33.866 +42 36 34.49 V T08
2025-08-06 12:07:25 C 00 35 33.564 +42 36 37.51 V T08
2025-08-06 12:10:14 C 00 35 33.415 +42 36 39.06 V T08
2025-08-06 12:15:32 C 00 35 33.134 +42 36 41.76 V T08
2025-08-06 12:24:48 C 00 35 32.662 +42 36 46.19 V T08
2025-08-06 12:35:21 C 00 35 32.081 +42 36 51.84 V T08
2025-08-06 21:43:59 B 00 35 06.259 +42 41 08.31 W G34
2025-08-06 21:49:42 B 00 35 05.983 +42 41 11.21 W G34
2025-08-06 21:55:25 B 00 35 05.692 +42 41 14.14 W G34
2025-08-09 02:29:37 C 00 32 23.905 +43 05 21.24 X R59
2025-08-09 02:44:50 C 00 32 23.000 +43 05 27.84 X R59
2025-08-09 02:59:29 C 00 32 22.133 +43 05 34.28 X R59
2025-08-09 20:53:17 C 00 31 23.767 +43 12 53.39 V G33
2025-08-09 20:56:39 C 00 31 23.598 +43 12 54.54 V G33
2025-08-09 21:05:24 C 00 31 23.113 +43 12 59.11 V G33
2025-08-09 21:08:47 C 00 31 22.904 +43 13 00.12 V G33
2025-08-09 21:12:09 C 00 31 22.668 +43 13 01.77 V G33
2025-08-10 11:12:13 C 00 30 34.939 +43 18 49.00 V T08
2025-08-10 11:38:23 C 00 30 33.305 +43 18 59.90 V T08
2025-08-10 11:42:29 C 00 30 33.062 +43 19 01.74 V T08
2025-08-10 12:21:03 C 00 30 30.641 +43 19 17.33 V T08
2025-08-10 22:14:42 C 00 29 56.407 +43 22 54.95 Z C23
2025-08-10 22:23:55 C 00 29 55.951 +43 22 57.97 Z C23
2025-08-10 23:08:34 C 00 29 52.92 +43 23 19.7 X D04
2025-08-10 23:14:02 C 00 29 52.58 +43 23 21.8 X D04
2025-08-10 23:30:23 C 00 29 51.57 +43 23 28.1 X D04
2025-08-10 23:33:07 C 00 29 51.32 +43 23 28.9 X D04
2025-08-11 01:30:18 C 00 29 44.682 +43 24 14.62 X R59
2025-08-11 01:44:58 C 00 29 43.744 +43 24 20.31 X R59
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)