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
2025-06-15 13:58:09 C 00 36 47.539 +22 04 10.70 V T05
2025-06-15 14:12:11 C 00 36 47.657 +22 04 32.38 V T05
2025-06-15 14:29:29 C 00 36 47.808 +22 04 58.98 V T05
2025-06-17 10:13:59 C 00 37 23.124 +23 10 04.26 V 703
2025-06-17 10:16:08 C 00 37 23.084 +23 10 07.25 V 703
2025-06-17 10:16:52 C 00 37 23.124 +23 10 07.93 V 703
2025-06-17 10:19:01 C 00 37 23.135 +23 10 11.93 V 703
2025-06-17 10:19:45 C 00 37 23.185 +23 10 12.76 V 703
2025-06-17 10:21:54 C 00 37 23.189 +23 10 15.78 V 703
2025-06-17 10:22:38 C 00 37 23.178 +23 10 16.72 V 703
2025-06-17 10:24:47 C 00 37 23.214 +23 10 19.74 V 703
2025-06-17 13:08:47 C 00 37 25.733 +23 14 23.68 V T08
2025-06-17 13:09:26 C 00 37 25.733 +23 14 24.50 V T08
2025-06-17 13:29:20 C 00 37 25.968 +23 14 54.13 V T08
2025-06-19 01:23:12 C 00 37 58.380 +24 06 27.83 Z C23
2025-06-19 01:29:41 C 00 37 58.442 +24 06 38.20 Z C23
2025-06-19 13:23:08 C 00 38 10.063 +24 23 37.25 V T05
2025-06-19 13:37:06 C 00 38 10.231 +24 23 57.41 V T05
2025-06-19 13:51:01 C 00 38 10.426 +24 24 17.46 V T05
2025-06-20 13:13:00 C 00 38 33.554 +24 56 54.35 V T08
2025-06-20 13:19:47 C 00 38 33.641 +24 57 04.18 V T08
2025-06-20 13:33:27 C 00 38 33.818 +24 57 23.33 V T08
2025-06-20 13:38:17 C 00 38 33.893 +24 57 30.35 V T08
2025-06-22 01:13:04 C 00 39 10.236 +25 45 56.38 Z C23
2025-06-22 01:28:06 C 00 39 10.452 +25 46 17.04 Z C23
2025-06-22 03:30:59 C 00 39 12.310 +25 49 27.95 V M22
2025-06-22 03:41:27 C 00 39 12.454 +25 49 42.13 V M22
2025-06-22 03:50:26 C 00 39 12.576 +25 49 54.55 V M22
2025-06-22 23:40:26 B 00 39 34.032 +26 16 08.36 W M73
2025-06-22 23:44:52 B 00 39 34.056 +26 16 14.41 W M73
2025-06-22 23:49:30 B 00 39 34.174 +26 16 20.50 W M73
2025-06-23 09:28:03 C 00 39 44.069 +26 29 21.12 V W68
2025-06-23 09:28:42 C 00 39 44.040 +26 29 21.26 V W68
2025-06-23 09:29:20 C 00 39 44.102 +26 29 23.39 V W68
2025-06-23 09:44:00 C 00 39 44.268 +26 29 42.07 V W68
2025-06-23 09:46:35 C 00 39 44.318 +26 29 45.85 V W68
2025-06-23 23:30:38 B 00 39 59.515 +26 47 29.87 W M73
2025-06-23 23:37:12 B 00 39 59.635 +26 47 38.69 W M73
2025-06-23 23:43:37 B 00 39 59.760 +26 47 47.18 W M73
2025-06-23 23:50:03 B 00 39 59.873 +26 47 55.46 W M73
2025-06-24 00:45:56 C 00 40 00.802 +26 48 58.54 Z C23
2025-06-24 01:41:55 C 00 40 01.726 +26 50 12.48 Z C23
2025-06-27 02:55:47 C 00 41 21.168 +28 23 16.55 V R17
2025-06-27 03:16:04 C 00 41 21.482 +28 23 42.07 V R17
2025-06-27 03:36:17 C 00 41 21.787 +28 24 07.67 V R17
2025-06-27 03:56:44 C 00 41 22.094 +28 24 33.59 V R17
2025-06-27 14:06:29 C 00 41 32.832 +28 37 08.51 V T05
2025-06-27 14:11:07 C 00 41 32.923 +28 37 14.27 V T05
2025-06-27 14:25:46 C 00 41 33.118 +28 37 32.27 V T05
2025-06-27 14:41:31 C 00 41 33.338 +28 37 52.10 V T05
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)