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
2018-09-17 08:03:20 C 01 48 08.19 +40 36 07.7 V 703
2018-09-17 08:11:04 C 01 48 07.70 +40 36 07.4 V 703
2018-09-17 08:18:51 C 01 48 07.17 +40 36 06.8 V 703
2018-09-17 08:26:43 C 01 48 06.68 +40 36 06.5 V 703
2018-09-17 12:09:37 C 01 47 52.72 +40 35 57.0 U T08
2018-09-17 12:27:53 C 01 47 51.46 +40 35 55.6 U T08
2018-09-17 12:43:35 C 01 47 50.44 +40 35 54.2 U T08
2018-09-17 12:59:30 C 01 47 49.41 +40 35 53.9 U T08
2018-09-18 09:44:51 C 01 46 30.63 +40 34 27.2 V G96
2018-09-18 10:00:20 C 01 46 29.63 +40 34 25.1 V G96
2018-09-18 10:07:10 C 01 46 29.11 +40 34 25.1 V G96
2018-09-18 10:14:00 C 01 46 28.66 +40 34 24.7 V G96
2018-09-19 12:16:00 C 01 44 47.00 +40 32 02.8 U T05
2018-09-19 12:33:49 C 01 44 45.78 +40 32 00.9 U T05
2018-09-19 12:45:36 C 01 44 44.95 +40 31 59.6 U T05
2018-09-19 13:00:05 C 01 44 43.93 +40 31 57.9 U T05
2018-09-21 00:35:10 C 01 42 19.87 +40 27 28.0 q 160
2018-09-21 00:38:13 C 01 42 19.63 +40 27 27.5 q 160
2018-09-21 00:41:15 C 01 42 19.40 +40 27 26.9 q 160
2018-09-21 11:40:52 C 01 41 33.75 +40 25 52.4 U T08
2018-09-21 12:00:45 C 01 41 32.43 +40 25 50.3 U T08
2018-09-21 12:02:58 C 01 41 32.11 +40 25 49.2 U T08
2018-09-21 12:06:48 C 01 41 31.84 +40 25 47.9 U T08
2018-09-22 07:19:45 C 01 40 11.04 +40 22 34.2 V 703
2018-09-22 07:27:26 C 01 40 10.46 +40 22 32.7 V 703
2018-09-22 07:35:06 C 01 40 09.88 +40 22 31.5 V 703
2018-09-22 07:42:47 C 01 40 09.33 +40 22 30.4 V 703
2018-09-22 09:54:22 C 01 40 00.144 +40 22 08.11 U F52
2018-09-22 10:11:55 C 01 39 58.842 +40 22 05.15 U F52
2018-09-22 10:29:34 C 01 39 57.539 +40 22 02.15 U F52
2018-09-22 10:47:09 C 01 39 56.233 +40 21 59.10 U F52
2018-09-22 20:47:53 C 01 39 13.44 +40 20 03.4 o L52
2018-09-22 20:49:23 C 01 39 13.25 +40 20 03.3 o L52
2018-09-22 20:50:54 C 01 39 13.14 +40 20 03.1 o L52
2018-09-22 22:43:51 C 01 39 04.80 +40 19 41.2 o L52
2018-09-22 22:45:23 C 01 39 04.61 +40 19 41.5 o L52
2018-09-22 22:46:56 C 01 39 04.63 +40 19 40.6 o L52
2018-09-24 10:01:51 C 01 36 30.257 +40 12 14.68 U F52
2018-09-24 10:18:31 C 01 36 28.973 +40 12 10.96 U F52
2018-09-24 10:51:56 C 01 36 26.389 +40 12 03.44 U F52
2018-09-28 00:28:51 C 01 29 53.83 +39 47 56.3 q 160
2018-09-28 00:32:08 C 01 29 53.54 +39 47 55.3 q 160
2018-09-28 00:35:14 C 01 29 53.35 +39 47 53.7 q 160
2018-09-29 00:46:29 C 01 27 58.95 +39 39 35.9 q 160
2018-09-29 00:49:41 C 01 27 58.70 +39 39 35.0 q 160
2018-09-29 00:52:52 C 01 27 58.44 +39 39 34.2 q 160
2018-09-30 00:32:33 C 01 26 05.43 +39 30 47.3 q 160
2018-09-30 00:35:31 C 01 26 05.19 +39 30 46.6 q 160
2018-09-30 00:38:31 C 01 26 04.93 +39 30 45.6 q 160
2018-10-01 11:28:46 C 01 23 16.68 +39 16 44.3 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)