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
2025-10-06 09:13:45 C 22 48 28.286 +31 09 55.04 V T05
2025-10-06 21:01:16 C 22 48 07.64 +30 56 40.5 V R85
2025-10-06 21:08:02 C 22 48 07.42 +30 56 33.1 V R85
2025-10-06 21:14:50 C 22 48 07.20 +30 56 25.5 V R85
2025-10-06 22:08:06 B 22 48 05.52 +30 55 26.2 X M54
2025-10-06 22:14:16 B 22 48 05.31 +30 55 19.2 X M54
2025-10-06 22:20:25 B 22 48 05.13 +30 55 12.3 X M54
2025-10-07 22:26:48 B 22 47 25.25 +30 28 22.4 X M54
2025-10-07 22:32:57 B 22 47 25.06 +30 28 15.8 X M54
2025-10-07 22:39:07 B 22 47 24.86 +30 28 08.5 X M54
2025-10-08 18:33:50 B 22 46 55.313 +30 06 05.47 W L47
2025-10-08 18:36:44 B 22 46 55.174 +30 06 01.69 W L47
2025-10-08 18:39:40 B 22 46 55.094 +30 05 58.27 W L47
2025-10-08 18:42:35 B 22 46 55.018 +30 05 55.18 W L47
2025-10-08 20:25:03 B 22 46 52.711 +30 04 05.38 X J51
2025-10-08 20:42:06 B 22 46 52.260 +30 03 46.08 X J51
2025-10-08 20:58:11 B 22 46 51.727 +30 03 28.58 X J51
2025-10-08 22:31:18 C 22 46 49.241 +30 01 46.52 V R17
2025-10-08 22:48:25 C 22 46 48.778 +30 01 27.66 V R17
2025-10-08 23:08:48 C 22 46 48.209 +30 01 05.02 V R17
2025-10-08 23:29:10 C 22 46 47.666 +30 00 42.41 V R17
2025-10-09 19:11:09 C 22 46 21.32 +29 38 58.8 V Z45
2025-10-09 19:18:02 C 22 46 21.16 +29 38 51.5 V Z45
2025-10-09 19:24:55 C 22 46 20.99 +29 38 43.9 V Z45
2025-10-09 19:31:47 C 22 46 20.82 +29 38 36.4 V Z45
2025-10-10 01:54:29 B 22 46 12.278 +29 31 47.93 X X24
2025-10-10 02:08:39 B 22 46 12.005 +29 31 32.84 X X24
2025-10-10 02:21:48 B 22 46 11.654 +29 31 17.44 X X24
2025-10-12 09:05:48 C 22 45 10.920 +28 31 45.62 V T05
2025-10-12 09:47:47 C 22 45 10.123 +28 31 00.08 V T05
2025-10-12 09:51:54 C 22 45 10.056 +28 30 55.73 V T05
2025-10-12 22:09:57 B 22 44 59.16 +28 17 40.6 X R70
2025-10-12 22:20:35 B 22 44 58.99 +28 17 29.1 X R70
2025-10-12 22:31:14 B 22 44 58.81 +28 17 17.7 X R70
2025-10-13 00:18:50 B 22 44 57.730 +28 15 34.60 X X24
2025-10-13 00:38:28 B 22 44 57.403 +28 15 13.72 X X24
2025-10-13 00:57:02 B 22 44 57.091 +28 14 54.06 X X24
2025-10-13 21:24:03 B 22 44 40.43 +27 52 57.1 V R99
2025-10-13 21:28:33 B 22 44 40.37 +27 52 51.9 V R99
2025-10-13 21:33:03 B 22 44 40.21 +27 52 46.1 V R99
2025-10-13 22:43:58 C 22 44 39.502 +27 51 35.46 V R17
2025-10-13 22:54:28 B 22 44 39.374 +27 51 24.05 X J51
2025-10-13 22:55:24 B 22 44 39.19 +27 51 20.1 X R70
2025-10-13 23:06:00 B 22 44 39.04 +27 51 08.8 X R70
2025-10-13 23:06:31 B 22 44 39.185 +27 51 11.48 X J51
2025-10-13 23:09:13 C 22 44 39.115 +27 51 08.75 V R17
2025-10-13 23:16:37 B 22 44 38.89 +27 50 57.5 X R70
2025-10-13 23:18:35 B 22 44 38.966 +27 50 58.81 X J51
2025-10-13 23:28:45 C 22 44 38.815 +27 50 47.94 V R17
2025-10-13 23:48:16 C 22 44 38.527 +27 50 27.17 V R17
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)