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
2025-02-22 00:18:50 C 06 28 14.39 -27 04 40.7 834
2025-02-22 00:56:18 C 06 28 09.54 -27 05 01.3 834
2025-02-23 02:25:21 C 06 25 01.908 -27 18 57.49 V W68
2025-02-23 02:32:48 C 06 25 00.953 -27 19 01.38 V W68
2025-02-23 02:38:14 C 06 25 00.264 -27 19 04.15 V W68
2025-02-23 02:53:05 C 06 24 58.366 -27 19 11.86 V W68
2025-02-24 02:08:18 C 06 22 10.106 -27 31 19.49 V W68
2025-02-24 02:12:24 C 06 22 09.590 -27 31 21.58 V W68
2025-02-24 02:20:00 C 06 22 08.630 -27 31 25.36 V W68
2025-02-24 02:34:22 C 06 22 06.826 -27 31 32.45 V W68
2025-02-24 05:40:31 C 06 21 45.560 -27 33 25.99 X F51
2025-02-24 05:56:34 C 06 21 43.529 -27 33 34.16 X F51
2025-02-24 06:28:30 C 06 21 39.478 -27 33 50.49 X F51
2025-02-24 19:45:21 C 06 20 04.157 -27 40 08.65 V M22
2025-02-24 20:36:48 C 06 19 57.754 -27 40 33.10 V M22
2025-02-24 20:41:26 C 06 19 57.166 -27 40 35.33 V M22
2025-02-25 19:40:25 C 06 17 15.281 -27 51 40.61 V M22
2025-02-25 19:46:25 C 06 17 14.546 -27 51 43.20 V M22
2025-02-25 19:55:00 C 06 17 13.486 -27 51 47.38 V M22
2025-02-27 02:10:02 C 06 13 43.565 -28 05 39.59 V W68
2025-02-27 02:14:56 C 06 13 43.010 -28 05 41.53 V W68
2025-02-27 02:19:30 C 06 13 42.475 -28 05 43.44 V W68
2025-02-27 02:27:25 C 06 13 41.510 -28 05 46.82 V W68
2025-02-27 02:41:43 C 06 13 39.794 -28 05 52.91 V W68
2025-02-28 01:56:02 C 06 11 01.800 -28 16 01.74 V W68
2025-02-28 02:00:42 C 06 11 01.253 -28 16 03.76 V W68
2025-02-28 02:11:28 C 06 10 59.976 -28 16 08.18 V W68
2025-02-28 02:25:37 C 06 10 58.308 -28 16 13.91 V W68
2025-02-28 19:30:48 C 06 09 03.859 -28 23 24.79 V M22
2025-02-28 19:35:24 C 06 09 03.326 -28 23 26.70 V M22
2025-02-28 19:46:02 C 06 09 02.083 -28 23 31.02 V M22
2025-02-28 20:01:31 C 06 09 00.264 -28 23 37.03 V M22
2025-03-01 13:32:24 C 06 07 04.423 -28 31 03.29 V O51
2025-03-01 13:38:42 C 06 07 03.677 -28 31 05.74 V O51
2025-03-01 13:44:30 C 06 07 03.000 -28 31 08.54 V O51
2025-03-03 01:32:18 C 06 03 09.696 -28 44 50.17 V W68
2025-03-03 01:36:24 C 06 03 09.228 -28 44 51.61 V W68
2025-03-03 01:42:21 C 06 03 08.561 -28 44 53.77 V W68
2025-03-03 01:44:19 C 06 03 08.340 -28 44 54.49 V W68
2025-03-03 01:46:58 C 06 03 08.038 -28 44 55.43 V W68
2025-03-03 01:55:45 C 06 03 07.046 -28 44 58.45 V W68
2025-03-03 01:58:21 C 06 03 06.754 -28 44 59.57 V W68
2025-03-03 02:26:22 C 06 03 03.619 -28 45 09.65 V W68
2025-03-04 03:10:14 C 06 00 25.534 -28 54 20.02 V W68
2025-03-04 03:36:37 C 06 00 22.625 -28 54 28.69 V W68
2025-03-04 03:37:56 C 06 00 22.493 -28 54 29.38 V W68
2025-03-04 03:40:35 C 06 00 22.183 -28 54 30.20 V W68
2025-03-04 03:42:41 C 06 00 21.972 -28 54 30.78 V W68
2025-03-04 04:28:47 C 06 00 16.968 -28 54 45.79 V W68
2025-03-04 04:54:57 C 06 00 14.146 -28 54 54.25 V W68
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)