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
2018-10-28 05:00:15 C 00 36 34.79 +31 38 13.9 V 703
2018-10-28 05:08:07 C 00 36 34.37 +31 38 06.9 V 703
2018-10-28 05:16:06 C 00 36 33.93 +31 37 59.9 V 703
2018-10-29 06:09:33 C 00 35 16.77 +31 15 53.0 V G96
2018-10-29 06:16:59 C 00 35 16.38 +31 15 46.4 V G96
2018-10-29 06:24:24 C 00 35 15.99 +31 15 39.8 V G96
2018-10-29 06:31:51 C 00 35 15.59 +31 15 33.1 V G96
2018-11-01 09:53:27 C 00 31 42.37 +30 08 33.2 U T05
2018-11-01 10:08:07 C 00 31 41.72 +30 08 19.8 U T05
2018-11-01 10:23:25 C 00 31 41.01 +30 08 06.4 U T05
2018-11-01 10:39:02 C 00 31 40.29 +30 07 52.2 U T05
2018-11-02 04:41:42 C 00 30 54.31 +29 51 50.6 U I41
2018-11-02 05:41:03 C 00 30 51.67 +29 50 57.9 U I41
2018-11-02 14:59:37 C 00 30 28.31 +29 42 43.9 q D29
2018-11-02 15:19:59 C 00 30 27.42 +29 42 25.8 q D29
2018-11-03 04:27:28 C 00 29 55.78 +29 30 50.3 V 703
2018-11-03 04:35:11 C 00 29 55.45 +29 30 43.4 V 703
2018-11-03 04:43:02 C 00 29 55.11 +29 30 36.7 V 703
2018-11-03 04:51:14 C 00 29 54.78 +29 30 29.5 V 703
2018-11-03 09:43:13 C 00 29 42.87 +29 26 13.6 V T08
2018-11-03 09:57:44 C 00 29 42.27 +29 26 00.5 V T08
2018-11-03 10:12:44 C 00 29 41.64 +29 25 46.9 V T08
2018-11-03 10:27:49 C 00 29 41.01 +29 25 33.6 V T08
2018-11-03 15:46:57 C 00 29 28.61 +29 20 51.0 q D29
2018-11-03 16:07:19 C 00 29 27.78 +29 20 32.9 q D29
2018-11-03 16:27:41 C 00 29 26.94 +29 20 14.6 q D29
2018-11-05 02:38:01 C 00 28 11.00 +28 50 17.2 V 703
2018-11-05 02:45:36 C 00 28 10.79 +28 50 10.4 V 703
2018-11-05 03:10:08 C 00 28 09.84 +28 49 50.6 V 703
2018-11-08 04:21:24 C 00 25 47.00 +27 46 41.0 V 703
2018-11-08 04:28:58 C 00 25 46.74 +27 46 34.5 V 703
2018-11-08 04:36:32 C 00 25 46.54 +27 46 28.1 V 703
2018-11-08 04:44:06 C 00 25 46.28 +27 46 21.5 V 703
2018-11-08 14:39:35 C 00 25 29.03 +27 37 56.0 q D29
2018-11-08 14:59:57 C 00 25 28.39 +27 37 38.6 q D29
2018-11-08 15:20:19 C 00 25 27.78 +27 37 21.3 q D29
2018-11-08 15:41:00 C 00 25 27.16 +27 37 03.6 q D29
2018-11-08 16:01:22 C 00 25 26.54 +27 36 46.2 q D29
2018-11-08 16:21:44 C 00 25 25.95 +27 36 28.8 q D29
2018-11-09 10:06:36 C 00 24 56.85 +27 21 32.3 U T05
2018-11-09 10:21:33 C 00 24 56.40 +27 21 19.8 U T05
2018-11-09 10:56:36 C 00 24 55.43 +27 20 50.0 U T05
2018-11-10 09:07:12 C 00 24 21.676 +27 02 19.46 U F52
2018-11-10 09:21:42 C 00 24 21.288 +27 02 07.34 U F52
2018-11-10 09:36:11 C 00 24 20.904 +27 01 55.17 U F52
2018-11-10 09:50:39 C 00 24 20.521 +27 01 43.11 U F52
2018-11-12 16:11:32 C 00 23 08.82 +26 17 14.7 q C97
2018-11-12 16:13:43 C 00 23 08.68 +26 17 13.3 q C97
2018-11-12 16:18:05 C 00 23 08.62 +26 17 09.5 q C97
2018-11-13 09:46:25 C 00 22 48.21 +26 03 08.7 U 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)