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
2025-07-28 21:49:57 C 00 43 02.542 +40 34 15.42 Z C23
2025-07-28 21:51:06 C 00 43 02.498 +40 34 16.07 Z C23
2025-07-28 22:03:50 C 00 43 02.184 +40 34 25.43 Z C23
2025-07-28 22:05:00 C 00 43 02.179 +40 34 26.08 Z C23
2025-07-28 22:59:38 B 00 43 00.432 +40 35 14.35 W M73
2025-07-28 23:08:45 B 00 43 00.161 +40 35 21.59 W M73
2025-07-29 08:57:00 C 00 42 44.93 +40 41 52.6 q U55
2025-07-29 09:01:28 C 00 42 44.79 +40 41 55.5 q U55
2025-07-29 09:05:48 C 00 42 44.75 +40 41 58.7 q U55
2025-07-29 09:10:02 C 00 42 44.64 +40 42 01.5 q U55
2025-07-29 09:14:36 C 00 42 44.44 +40 42 05.1 q U55
2025-07-29 09:18:32 C 00 42 44.32 +40 42 07.8 q U55
2025-07-30 08:53:45 C 00 42 04.79 +40 57 46.7 q U55
2025-07-30 08:54:31 C 00 42 04.81 +40 57 47.2 q U55
2025-07-30 09:02:37 C 00 42 04.51 +40 57 53.1 q U55
2025-07-30 09:03:31 C 00 42 04.56 +40 57 53.3 q U55
2025-07-30 09:11:40 C 00 42 04.25 +40 58 00.1 q U55
2025-07-30 09:12:36 C 00 42 04.28 +40 58 00.1 q U55
2025-07-30 11:18:06 C 00 42 00.910 +40 59 27.82 V T08
2025-07-30 11:26:17 C 00 42 00.643 +40 59 33.22 V T08
2025-07-30 11:32:59 C 00 42 00.410 +40 59 37.28 V T08
2025-07-30 11:39:40 C 00 42 00.187 +40 59 42.43 V T08
2025-07-31 12:57:24 C 00 41 13.246 +41 15 56.16 V T05
2025-07-31 13:30:43 C 00 41 12.014 +41 16 17.47 V T05
2025-07-31 13:34:13 C 00 41 11.892 +41 16 19.60 V T05
2025-07-31 13:38:08 C 00 41 11.738 +41 16 22.15 V T05
2025-07-31 21:00:31 C 00 40 58.020 +41 20 47.33 V L54
2025-07-31 21:39:48 C 00 40 56.700 +41 21 12.56 V L54
2025-07-31 22:17:23 C 00 40 55.382 +41 21 36.58 V L54
2025-08-01 00:02:19 B 00 40 51.42 +41 22 45.1 X L76
2025-08-01 00:07:30 B 00 40 51.23 +41 22 48.3 X L76
2025-08-01 00:12:41 B 00 40 51.04 +41 22 51.5 X L76
2025-08-01 00:17:52 B 00 40 50.86 +41 22 54.9 X L76
2025-08-01 00:23:03 B 00 40 50.65 +41 22 58.2 X L76
2025-08-01 00:28:14 B 00 40 50.46 +41 23 01.5 X L76
2025-08-02 08:45:19 C 00 39 43.29 +41 42 31.4 q U55
2025-08-02 08:46:03 C 00 39 43.32 +41 42 30.8 q U55
2025-08-02 08:54:04 C 00 39 42.96 +41 42 36.3 q U55
2025-08-02 08:54:48 C 00 39 42.97 +41 42 36.7 q U55
2025-08-02 09:02:46 C 00 39 42.65 +41 42 41.0 q U55
2025-08-02 09:03:34 C 00 39 42.60 +41 42 42.3 q U55
2025-08-02 14:31:22 C 00 39 29.851 +41 46 04.08 V T08
2025-08-02 14:35:23 C 00 39 29.688 +41 46 05.81 V T08
2025-08-02 14:43:52 C 00 39 29.309 +41 46 10.96 V T08
2025-08-02 14:51:26 C 00 39 28.994 +41 46 15.53 V T08
2025-08-03 08:40:39 C 00 38 49.06 +41 56 22.9 q U55
2025-08-03 08:41:24 C 00 38 49.02 +41 56 22.6 q U55
2025-08-03 08:49:35 C 00 38 48.66 +41 56 27.8 q U55
2025-08-03 08:50:21 C 00 38 48.61 +41 56 27.9 q U55
2025-08-03 08:58:32 C 00 38 48.30 +41 56 32.7 q U55
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)