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
1988-10-08 09:45:00 04 11 58.10 +36 20 36.1 261
1988-10-08 10:30:00 04 11 56.68 +36 20 36.0 261
1990-12-18 06:56:30 05 05 29.27 +22 20 49.9 17.3 675
1990-12-18 07:24:29 05 05 26.93 +22 20 33.6 675
1990-12-19 06:29:14 05 03 29.19 +22 08 56.3 675
1990-12-19 06:57:15 05 03 26.53 +22 08 42.8 675
1992-11-25 11:55:00 08 51 03.72 +08 59 59.0 q 261
1992-11-25 12:49:59 08 51 05.47 +08 59 17.8 q 261
1997-11-28 07:08:48 C 04 15 08.348 +29 02 41.27 l G91
1997-11-30 12:48:47 C 04 10 45.89 +28 35 30.5 18.9 c 566
1997-11-30 13:03:37 C 04 10 44.66 +28 35 22.6 19.1 c 566
1997-11-30 13:18:21 C 04 10 43.44 +28 35 14.1 18.5 c 566
1997-12-01 21:46:29 C 04 08 06.55 +28 18 12.6 z 587
1997-12-01 21:54:10 C 04 08 05.93 +28 18 08.5 z 587
1997-12-01 22:06:15 C 04 08 04.94 +28 18 02.3 z 587
1997-12-02 06:22:39 C 04 07 25.05 +28 13 37.7 658
1997-12-02 06:30:31 C 04 07 24.41 +28 13 33.3 658
1997-12-02 06:34:04 C 04 07 24.13 +28 13 31.5 658
1997-12-03 06:37:04 C 04 05 28.72 +28 00 36.5 658
1997-12-03 07:01:37 C 04 05 26.71 +28 00 23.2 658
1997-12-03 07:07:07 C 04 05 26.27 +28 00 20.5 658
1997-12-04 14:32:14 C 04 02 57.01 +27 43 13.4 z 402
1997-12-04 14:35:14 C 04 02 56.77 +27 43 11.4 z 402
1997-12-04 14:38:15 C 04 02 56.54 +27 43 09.8 z 402
1997-12-05 13:45:14 C 04 01 08.19 +27 30 22.7 360
1997-12-05 13:57:30 C 04 01 07.18 +27 30 15.5 360
1997-12-05 14:13:30 C 04 01 05.92 +27 30 06.8 360
1997-12-05 21:24:40 C 04 00 32.53 +27 26 04.1 046
1997-12-05 21:26:34 C 04 00 32.36 +27 26 02.8 046
1997-12-05 21:28:22 C 04 00 32.22 +27 26 02.1 046
1997-12-05 21:30:49 C 04 00 32.01 +27 26 00.9 046
1997-12-06 00:18:57 C 04 00 18.76 +27 24 26.6 z 118
1997-12-06 00:26:21 C 04 00 18.15 +27 24 22.5 z 118
1997-12-06 00:30:21 C 04 00 17.82 +27 24 19.7 z 118
1997-12-06 23:07:10 C 03 58 33.67 +27 11 38.1 z 118
1997-12-06 23:11:30 C 03 58 33.34 +27 11 35.5 z 118
1997-12-06 23:15:31 C 03 58 33.03 +27 11 33.4 z 118
1997-12-09 13:04:29 C 03 53 55.59 +26 36 21.9 z 402
1997-12-09 13:08:30 C 03 53 55.30 +26 36 19.7 z 402
1997-12-09 13:12:31 C 03 53 54.97 +26 36 17.6 z 402
1997-12-18 08:15:37 C 03 39 50.94 +24 34 22.3 658
1997-12-18 08:19:22 C 03 39 50.72 +24 34 20.1 658
1997-12-18 08:24:30 C 03 39 50.41 +24 34 17.3 658
1997-12-24 13:51:44 C 03 31 53.84 +23 11 08.1 360
1997-12-24 13:57:44 C 03 31 53.53 +23 11 04.9 360
1997-12-24 14:02:15 C 03 31 53.33 +23 11 02.0 360
1997-12-24 20:28:32 C 03 31 35.54 +23 07 33.6 z 104
1997-12-24 20:53:53 C 03 31 34.15 +23 07 17.9 z 104
1997-12-25 11:31:56 C 03 30 54.24 +22 59 31.9 z 402
1997-12-25 11:34:56 C 03 30 54.12 +22 59 30.1 z 402
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)