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
2025-09-05 20:45:57 B 23 37 45.89 +42 44 32.5 X L76
2025-09-05 20:51:05 B 23 37 45.39 +42 44 29.6 X L76
2025-09-05 21:20:26 C 23 37 42.907 +42 44 11.11 Z C23
2025-09-05 22:01:38 C 23 37 38.899 +42 43 48.76 Z C23
2025-09-06 00:29:30 B 23 37 24.876 +42 42 32.87 X J51
2025-09-06 00:44:42 B 23 37 23.381 +42 42 24.44 X J51
2025-09-06 00:59:55 B 23 37 21.842 +42 42 15.95 X J51
2025-09-06 11:32:22 C 23 36 21.876 +42 36 19.91 V T08
2025-09-06 11:36:22 C 23 36 21.482 +42 36 17.64 V T08
2025-09-06 12:18:24 C 23 36 17.321 +42 35 52.94 V T08
2025-09-06 13:00:17 C 23 36 13.181 +42 35 28.14 V T08
2025-09-06 19:14:22 B 23 35 39.21 +42 31 43.8 X L76
2025-09-06 19:19:30 B 23 35 38.71 +42 31 40.8 X L76
2025-09-06 19:24:38 B 23 35 38.22 +42 31 38.2 X L76
2025-09-06 19:29:46 B 23 35 37.73 +42 31 35.0 X L76
2025-09-06 19:34:54 B 23 35 37.23 +42 31 32.0 X L76
2025-09-06 19:40:02 B 23 35 36.72 +42 31 29.1 X L76
2025-09-07 10:18:15 C 23 34 14.230 +42 22 50.92 V T05
2025-09-07 10:20:12 C 23 34 14.033 +42 22 49.66 V T05
2025-09-07 10:25:02 C 23 34 13.577 +42 22 46.81 V T05
2025-09-07 10:32:33 C 23 34 12.835 +42 22 42.06 V T05
2025-09-07 11:02:21 C 23 34 09.907 +42 22 23.99 V T05
2025-09-07 11:07:56 C 23 34 09.350 +42 22 20.42 V T05
2025-09-07 11:57:57 C 23 34 04.421 +42 21 49.68 V T05
2025-09-07 12:39:55 C 23 34 00.322 +42 21 23.33 V T05
2025-09-07 18:45:32 B 23 33 27.38 +42 17 30.4 X L76
2025-09-07 18:50:40 B 23 33 26.89 +42 17 27.2 X L76
2025-09-07 18:55:48 B 23 33 26.39 +42 17 24.2 X L76
2025-09-07 19:00:56 B 23 33 25.91 +42 17 20.9 X L76
2025-09-07 19:06:04 B 23 33 25.41 +42 17 17.8 X L76
2025-09-07 19:11:12 B 23 33 24.91 +42 17 14.9 X L76
2025-09-07 23:49:39 B 23 32 58.486 +42 14 20.26 V L65
2025-09-07 23:56:42 B 23 32 57.804 +42 14 15.68 V L65
2025-09-08 00:03:29 B 23 32 57.144 +42 14 11.58 V L65
2025-09-08 11:01:17 C 23 31 56.158 +42 07 19.27 V T05
2025-09-08 11:05:19 C 23 31 55.793 +42 07 16.64 V T05
2025-09-08 11:14:37 C 23 31 54.893 +42 07 10.42 V T05
2025-09-08 12:04:47 C 23 31 50.009 +42 06 37.73 V T05
2025-09-09 09:45:17 C 23 29 51.118 +41 52 14.30 V T08
2025-09-09 09:47:55 C 23 29 50.863 +41 52 12.58 V T08
2025-09-09 09:51:54 C 23 29 50.484 +41 52 09.88 V T08
2025-09-09 10:09:24 C 23 29 48.797 +41 51 58.21 V T08
2025-09-09 20:41:09 C 23 28 51.660 +41 44 35.41 Z C23
2025-09-09 21:06:31 C 23 28 49.294 +41 44 18.20 Z C23
2025-09-09 21:32:55 C 23 28 46.786 +41 43 59.23 Z C23
2025-09-10 04:15:34 B 23 28 10.06 +41 39 19.6 Z W37
2025-09-10 04:42:52 B 23 28 07.60 +41 38 59.3 Z W37
2025-09-10 05:13:43 B 23 28 04.57 +41 38 37.7 Z W37
2025-09-10 11:18:02 C 23 27 31.447 +41 34 24.02 V T08
2025-09-10 11:37:16 C 23 27 29.614 +41 34 10.09 V 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)