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
2025-04-01 00:18:31 C 04 51 15.979 -31 57 24.84 V W68
2025-04-01 17:36:59 C 04 48 59.794 -32 00 17.53 V M22
2025-04-01 17:38:17 C 04 48 59.614 -32 00 17.68 V M22
2025-04-01 17:41:38 C 04 48 59.155 -32 00 17.93 V M22
2025-04-01 17:43:39 C 04 48 58.874 -32 00 18.22 V M22
2025-04-01 17:49:36 C 04 48 58.034 -32 00 18.97 V M22
2025-04-01 18:04:26 C 04 48 55.987 -32 00 20.63 V M22
2025-04-02 17:37:10 C 04 45 44.609 -32 03 52.16 V M22
2025-04-02 17:42:30 C 04 45 43.855 -32 03 52.70 V M22
2025-04-02 17:50:25 C 04 45 42.701 -32 03 53.46 V M22
2025-04-02 18:05:31 C 04 45 40.538 -32 03 55.04 V M22
2025-04-05 00:17:12 C 04 37 51.418 -32 09 54.32 V W68
2025-04-05 00:21:53 C 04 37 50.698 -32 09 54.29 V W68
2025-04-05 00:48:35 C 04 37 46.558 -32 09 55.08 V W68
2025-04-05 00:58:53 C 04 37 44.978 -32 09 55.33 V W68
2025-04-07 23:35:46 C 04 26 27.290 -32 11 53.02 V W68
2025-04-07 23:40:37 C 04 26 26.436 -32 11 52.58 V W68
2025-04-07 23:48:07 C 04 26 25.114 -32 11 52.08 V W68
2025-04-08 00:17:03 C 04 26 20.081 -32 11 49.60 V W68
2025-04-08 23:27:28 C 04 22 19.500 -32 10 34.46 V W68
2025-04-08 23:29:25 C 04 22 19.138 -32 10 34.32 V W68
2025-04-08 23:32:02 C 04 22 18.679 -32 10 33.92 V W68
2025-04-08 23:33:59 C 04 22 18.312 -32 10 33.67 V W68
2025-04-08 23:42:36 C 04 22 16.738 -32 10 32.48 V W68
2025-04-08 23:44:38 C 04 22 16.361 -32 10 32.34 V W68
2025-04-09 00:02:00 C 04 22 13.212 -32 10 30.18 V W68
2025-04-12 23:23:46 C 04 03 59.237 -31 51 38.09 V W68
2025-04-12 23:28:24 C 04 03 58.260 -31 51 36.32 V W68
2025-04-12 23:39:40 C 04 03 55.879 -31 51 31.79 V W68
2025-04-12 23:54:29 C 04 03 52.788 -31 51 26.10 V W68
2025-04-14 17:16:43 C 03 55 05.105 -31 34 39.83 V M22
2025-04-14 17:24:34 C 03 55 03.365 -31 34 35.90 V M22
2025-04-14 17:39:12 C 03 55 00.048 -31 34 27.95 V M22
2025-04-15 23:22:34 C 03 48 21.166 -31 18 28.76 V W68
2025-04-15 23:30:28 C 03 48 19.337 -31 18 23.51 V W68
2025-04-15 23:44:33 C 03 48 16.054 -31 18 14.36 V W68
2025-04-16 23:21:35 C 03 42 47.736 -31 02 53.20 V W68
2025-04-16 23:29:31 C 03 42 45.859 -31 02 47.47 V W68
2025-04-16 23:43:43 C 03 42 42.439 -31 02 35.84 V W68
2025-05-28 09:51:13 C 00 40 24.125 +08 38 29.18 V W68
2025-05-28 10:01:05 C 00 40 23.652 +08 38 51.04 V W68
2025-05-28 10:16:51 C 00 40 23.040 +08 39 27.58 V W68
2025-05-28 10:30:48 C 00 40 22.406 +08 39 59.44 V W68
2025-05-29 14:08:26 C 00 39 21.175 +09 41 10.25 V T08
2025-05-29 14:18:33 C 00 39 20.743 +09 41 32.60 V T08
2025-05-29 14:35:33 C 00 39 20.122 +09 42 10.40 V T08
2025-05-29 14:47:36 C 00 39 19.694 +09 42 37.12 V T08
2025-05-30 14:03:30 C 00 38 34.865 +10 33 05.69 V T05
2025-05-30 14:29:40 C 00 38 33.979 +10 34 02.24 V T05
2025-05-30 14:35:45 C 00 38 33.799 +10 34 15.02 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)