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
2015-12-17 09:09:26 C 06 48 39.05 +15 44 53.7 R G45
2015-12-19 07:51:19 C 06 45 01.31 +15 21 31.6 q 703
2015-12-19 07:57:51 C 06 45 00.86 +15 21 28.4 q 703
2015-12-19 08:04:23 C 06 45 00.37 +15 21 24.7 q 703
2015-12-19 08:10:55 C 06 44 59.75 +15 21 21.2 q 703
2015-12-21 23:33:01 C 06 39 48.21 +14 48 57.2 o B67
2015-12-21 23:48:14 C 06 39 46.90 +14 48 49.3 o B67
2015-12-22 00:03:48 C 06 39 45.56 +14 48 41.3 o B67
2015-12-24 07:24:40 C 06 34 59.83 +14 19 55.3 u H21
2015-12-24 07:26:38 C 06 34 59.63 +14 19 54.2 u H21
2015-12-24 07:28:35 C 06 34 59.47 +14 19 53.3 u H21
2015-12-24 07:30:33 C 06 34 59.27 +14 19 52.1 u H21
2015-12-24 07:32:31 C 06 34 59.12 +14 19 51.2 u H21
2015-12-24 07:34:28 C 06 34 58.94 +14 19 49.9 u H21
2015-12-24 07:36:26 C 06 34 58.77 +14 19 49.1 u H21
2015-12-24 07:38:35 C 06 34 58.58 +14 19 47.9 u H21
2016-01-01 08:01:37 C 06 17 17.93 +12 37 39.4 q 703
2016-01-01 08:08:06 C 06 17 17.30 +12 37 35.4 q 703
2016-01-01 08:14:35 C 06 17 16.65 +12 37 32.9 q 703
2016-01-01 08:21:05 C 06 17 16.00 +12 37 29.3 q 703
2016-01-04 07:28:37 C 06 10 31.33 +11 59 47.9 L T05
2016-01-04 07:52:21 C 06 10 29.05 +11 59 35.2 L T05
2016-01-04 08:07:54 C 06 10 27.48 +11 59 26.7 L T05
2016-01-04 09:00:26 C 06 10 22.33 +11 58 59.3 L T05
2016-01-04 09:22:21 C 06 10 20.19 +11 58 48.4 L T05
2016-01-05 08:15:12 C 06 08 09.37 +11 46 42.7 q H45
2016-01-05 08:16:55 C 06 08 09.22 +11 46 41.7 q H45
2016-01-05 08:18:33 C 06 08 09.07 +11 46 40.7 q H45
2016-01-05 08:19:57 C 06 08 08.95 +11 46 39.8 q H45
2016-01-05 08:21:34 C 06 08 08.76 +11 46 39.3 q H45
2016-01-10 05:38:55 C 05 57 10.98 +10 46 26.2 R G45
2016-01-10 05:45:57 C 05 57 10.34 +10 46 22.7 R G45
2016-01-10 06:12:35 C 05 57 07.83 +10 46 09.4 R G45
2016-01-10 06:18:14 C 05 57 07.29 +10 46 06.6 R G45
2016-01-10 06:24:23 C 05 57 06.71 +10 46 03.5 R G45
2016-01-10 06:36:50 C 05 57 05.55 +10 45 57.0 R G45
2016-01-10 06:41:11 C 05 57 05.11 +10 45 54.9 R G45
2016-01-10 06:41:34 C 05 57 05.09 +10 45 54.8 R G45
2016-01-13 09:14:29 C 05 50 23.403 +10 09 27.21 L F51
2016-01-13 09:32:25 C 05 50 21.75 +10 09 18.5 L T05
2016-01-13 09:32:55 C 05 50 21.728 +10 09 18.41 L F51
2016-01-13 09:43:04 C 05 50 20.78 +10 09 13.4 L T05
2016-01-13 09:46:58 C 05 50 20.45 +10 09 11.7 L T05
2016-01-13 10:09:33 C 05 50 18.397 +10 09 00.77 L F51
2016-01-13 11:16:09 C 05 50 12.36 +10 08 28.8 L T05
2016-01-14 09:31:45 C 05 48 16.42 +09 57 56.3 L T05
2016-01-14 09:43:28 C 05 48 15.40 +09 57 51.1 L T05
2016-01-14 10:09:01 C 05 48 13.10 +09 57 39.0 L T05
2016-01-14 10:49:14 C 05 48 09.55 +09 57 19.8 L T05
2016-01-14 11:15:21 C 05 48 07.26 +09 57 07.2 L 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)