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
2025-08-21 21:44:02 C 00 10 56.887 +44 18 27.22 Z C23
2025-08-21 22:25:44 C 00 10 53.278 +44 18 29.12 Z C23
2025-08-22 08:16:55 B 00 10 03.149 +44 18 44.64 V U62
2025-08-22 08:30:55 B 00 10 01.882 +44 18 44.42 V U62
2025-08-22 08:44:58 B 00 10 00.636 +44 18 44.71 V U62
2025-08-23 09:57:13 C 00 07 51.084 +44 18 31.43 V T05
2025-08-23 10:07:10 C 00 07 50.177 +44 18 31.25 V T05
2025-08-23 10:27:05 C 00 07 48.362 +44 18 31.14 V T05
2025-08-23 22:58:41 C 00 06 42.665 +44 17 52.84 Z C23
2025-08-23 23:24:23 C 00 06 40.385 +44 17 51.43 Z C23
2025-08-23 23:48:03 C 00 06 38.189 +44 17 51.11 Z C23
2025-08-24 07:42:52 B 00 05 56.662 +44 17 26.99 V U62
2025-08-24 08:10:41 B 00 05 54.072 +44 17 25.30 V U62
2025-08-24 21:32:21 C 00 04 43.212 +44 16 18.59 Z C23
2025-08-24 21:52:11 C 00 04 41.376 +44 16 16.82 Z C23
2025-08-25 00:53:04 B 00 04 24.643 +44 16 03.54 V L65
2025-08-25 00:57:16 B 00 04 24.264 +44 16 03.07 V L65
2025-08-25 01:01:26 B 00 04 23.894 +44 16 02.78 V L65
2025-08-25 10:17:39 C 00 03 33.689 +44 15 12.35 V G96
2025-08-25 10:25:13 C 00 03 33.001 +44 15 11.56 V G96
2025-08-25 10:32:47 C 00 03 32.263 +44 15 10.44 V G96
2025-08-25 10:40:20 C 00 03 31.550 +44 15 09.54 V G96
2025-08-25 22:09:44 C 00 02 30.466 +44 13 43.18 Z C23
2025-08-25 22:12:02 C 00 02 30.302 +44 13 42.49 Z C23
2025-08-25 22:14:56 C 00 02 29.844 +44 13 42.24 Z C23
2025-08-26 01:00:46 C 00 02 14.527 +44 13 26.36 Z R60
2025-08-26 01:03:46 C 00 02 14.256 +44 13 26.11 Z R60
2025-08-26 01:06:48 C 00 02 13.934 +44 13 25.68 Z R60
2025-08-26 01:09:47 C 00 02 13.644 +44 13 25.28 Z R60
2025-08-26 01:12:49 C 00 02 13.402 +44 13 24.92 Z R60
2025-08-27 04:11:45 C 23 59 44.695 +44 09 16.81 Z R60
2025-08-27 04:14:45 C 23 59 44.400 +44 09 16.34 Z R60
2025-08-27 04:17:45 C 23 59 44.148 +44 09 15.59 Z R60
2025-08-27 04:20:47 C 23 59 43.879 +44 09 15.12 Z R60
2025-08-27 04:23:46 C 23 59 43.562 +44 09 14.51 Z R60
2025-08-28 00:32:05 B 23 57 52.327 +44 05 23.93 V S47
2025-08-28 00:38:13 B 23 57 51.737 +44 05 22.56 V S47
2025-08-28 00:44:19 B 23 57 51.142 +44 05 21.23 V S47
2025-08-28 00:49:56 B 23 57 50.599 +44 05 20.08 V S47
2025-08-28 00:55:01 B 23 57 50.105 +44 05 18.96 V S47
2025-08-28 12:33:01 C 23 56 45.226 +44 02 52.94 V T05
2025-08-28 12:42:58 C 23 56 44.249 +44 02 50.53 V T05
2025-08-28 12:52:55 C 23 56 43.265 +44 02 48.16 V T05
2025-08-28 13:02:51 C 23 56 42.281 +44 02 45.71 V T05
2025-08-28 21:34:56 C 23 55 55.428 +44 00 36.25 Z C23
2025-08-28 21:35:30 C 23 55 55.430 +44 00 35.82 Z C23
2025-08-29 00:32:17 B 23 55 37.946 +43 59 56.72 V S47
2025-08-29 00:38:24 B 23 55 37.346 +43 59 55.14 V S47
2025-08-29 00:44:30 B 23 55 36.751 +43 59 53.56 V S47
2025-08-29 00:50:06 B 23 55 36.206 +43 59 52.19 V S47
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)