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
2018-11-13 10:01:43 C 00 22 47.93 +26 02 56.2 U T05
2018-11-13 10:17:06 C 00 22 47.58 +26 02 43.8 U T05
2018-11-13 10:32:15 C 00 22 47.31 +26 02 31.3 U T05
2018-11-15 20:03:48 C 00 21 53.02 +25 17 29.7 q 160
2018-11-15 20:07:25 C 00 21 52.98 +25 17 26.9 q 160
2018-11-15 20:11:00 C 00 21 52.90 +25 17 24.1 q 160
2018-11-17 01:31:52 C 00 21 31.51 +24 55 08.7 V G96
2018-11-17 01:39:55 C 00 21 31.41 +24 55 02.6 V G96
2018-11-17 01:47:58 C 00 21 31.30 +24 54 56.5 V G96
2018-11-17 01:56:00 C 00 21 31.20 +24 54 50.6 V G96
2018-11-18 19:46:38 C 00 21 07.21 +24 23 55.8 q 160
2018-11-18 19:50:30 C 00 21 07.18 +24 23 52.5 q 160
2018-11-18 19:54:55 C 00 21 07.19 +24 23 49.3 q 160
2018-11-27 04:05:13 C 00 21 01.11 +22 10 37.5 V 703
2018-11-27 04:13:05 C 00 21 01.16 +22 10 32.7 V 703
2018-11-27 04:20:52 C 00 21 01.18 +22 10 27.5 V 703
2018-11-27 04:28:33 C 00 21 01.23 +22 10 22.6 V 703
2018-11-27 07:55:55 C 00 21 02.54 +22 08 20.7 U T08
2018-11-27 08:10:15 C 00 21 02.53 +22 08 10.0 U T08
2018-11-27 08:13:00 C 00 21 02.62 +22 08 10.6 U T08
2018-11-27 08:13:40 C 00 21 02.63 +22 08 09.0 U T08
2018-11-27 08:16:43 C 00 21 02.71 +22 08 06.9 U T08
2018-11-27 08:30:47 C 00 21 02.69 +22 07 58.6 U T08
2018-11-27 08:38:10 C 00 21 02.77 +22 07 55.3 U T08
2018-11-27 08:45:01 C 00 21 02.74 +22 07 49.7 U T08
2018-11-27 08:56:10 C 00 21 02.80 +22 07 43.4 U T08
2018-11-28 21:39:17 C 00 21 20.33 +21 46 04.3 q 160
2018-11-28 21:43:16 C 00 21 20.30 +21 46 02.1 q 160
2018-11-28 21:47:13 C 00 21 20.39 +21 45 59.6 q 160
2018-11-29 04:33:21 C 00 21 24.23 +21 42 07.4 V 703
2018-11-29 04:40:56 C 00 21 24.30 +21 42 03.6 V 703
2018-11-29 04:48:32 C 00 21 24.36 +21 41 59.0 V 703
2018-11-29 04:56:09 C 00 21 24.40 +21 41 54.6 V 703
2018-11-29 08:16:18 C 00 21 26.29 +21 40 01.5 U T05
2018-11-29 08:30:46 C 00 21 26.41 +21 39 53.0 U T05
2018-11-29 08:44:56 C 00 21 26.51 +21 39 45.2 U T05
2018-11-29 08:59:02 C 00 21 26.63 +21 39 36.6 U T05
2018-12-01 07:47:05 C 00 21 58.24 +21 13 39.4 U T08
2018-12-01 07:59:38 C 00 21 58.34 +21 13 32.5 U T08
2018-12-01 08:12:24 C 00 21 58.50 +21 13 26.5 U T08
2018-12-01 08:24:48 C 00 21 58.68 +21 13 18.8 U T08
2018-12-05 03:43:12 C 00 23 22.89 +20 26 38.8 V 703
2018-12-05 03:51:27 C 00 23 23.06 +20 26 34.2 V 703
2018-12-05 03:59:42 C 00 23 23.22 +20 26 29.8 V 703
2018-12-05 04:07:57 C 00 23 23.33 +20 26 27.5 V 703
2018-12-07 08:00:43 C 00 24 23.55 +20 02 17.1 U T05
2018-12-07 08:12:51 C 00 24 23.84 +20 02 11.6 U T05
2018-12-07 08:21:58 C 00 24 24.02 +20 02 07.7 U T05
2018-12-07 08:38:55 C 00 24 24.34 +20 01 59.5 U T05
2018-12-09 07:20:28 C 00 25 26.18 +19 41 40.7 U T08
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)