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
2006-12-21 08:25:56 C 04 57 16.20 +21 47 36.4 r 703
2006-12-21 08:35:20 C 04 57 15.37 +21 47 31.8 r 703
2006-12-22 04:32:34 C 04 55 37.10 +21 37 16.5 17.9 c 704
2006-12-22 04:50:44 C 04 55 35.53 +21 37 07.2 18.0 c 704
2006-12-22 05:08:53 C 04 55 34.02 +21 36 58.2 17.8 c 704
2006-12-22 05:27:04 C 04 55 32.49 +21 36 49.1 17.7 c 704
2006-12-22 05:45:14 C 04 55 30.97 +21 36 39.8 17.7 c 704
2006-12-22 07:29:59 C 04 55 22.04 +21 35 45.0 r H45
2006-12-22 07:31:11 C 04 55 21.94 +21 35 44.6 r H45
2006-12-22 07:33:28 C 04 55 21.75 +21 35 43.2 r H45
2006-12-22 07:46:01 C 04 55 20.72 +21 35 36.8 r H45
2006-12-22 07:50:31 C 04 55 20.32 +21 35 34.4 r H45
2006-12-23 21:59:23 C 04 52 15.05 +21 15 54.6 c A24
2006-12-23 22:00:52 C 04 52 14.94 +21 15 54.4 c A24
2006-12-24 00:20:16 C 04 52 03.49 +21 14 41.3 c A24
2006-12-24 00:21:44 C 04 52 03.36 +21 14 40.8 c A24
2006-12-24 00:46:16 C 04 52 01.35 +21 14 27.8 c A24
2006-12-24 01:36:46 C 04 51 57.23 +21 14 01.1 c A24
2006-12-24 01:38:15 C 04 51 57.12 +21 14 00.3 c A24
2006-12-24 20:52:41 C 04 50 25.84 +21 04 05.5 c A24
2006-12-24 20:54:10 C 04 50 25.69 +21 04 04.9 c A24
2006-12-24 21:41:04 C 04 50 21.69 +21 03 38.2 17.7 r 084
2006-12-24 21:45:14 C 04 50 21.37 +21 03 36.2 17.6 r 084
2006-12-25 01:32:33 C 04 50 03.24 +21 01 40.3 c A24
2006-12-25 01:34:01 C 04 50 03.11 +21 01 39.7 c A24
2006-12-25 20:29:10 C 04 48 34.62 +20 51 52.9 17.4 r 084
2006-12-25 20:33:20 C 04 48 34.28 +20 51 50.3 17.6 r 084
2006-12-25 21:16:12 C 04 48 31.06 +20 51 30.8 c A24
2006-12-25 21:17:39 C 04 48 30.95 +20 51 29.7 c A24
2006-12-25 23:26:34 C 04 48 20.66 +20 50 23.3 c A24
2006-12-25 23:28:01 C 04 48 20.54 +20 50 22.6 c A24
2006-12-26 01:37:18 C 04 48 10.32 +20 49 14.9 c A24
2006-12-26 01:38:45 C 04 48 10.24 +20 49 14.6 c A24
2006-12-26 21:05:40 C 04 46 41.06 +20 39 14.7 c A24
2006-12-26 21:07:08 C 04 46 40.92 +20 39 13.8 c A24
2006-12-26 23:10:10 C 04 46 31.30 +20 38 10.0 c A24
2006-12-26 23:11:39 C 04 46 31.19 +20 38 09.3 c A24
2006-12-27 04:02:03 C 04 46 09.48 +20 35 42.0 r 703
2006-12-27 04:03:32 C 04 46 09.40 +20 35 40.6 r G96
2006-12-27 04:13:08 C 04 46 08.61 +20 35 36.0 r 703
2006-12-27 04:26:10 C 04 46 07.75 +20 35 29.4 r G96
2006-12-27 04:35:15 C 04 46 06.92 +20 35 24.9 r 703
2006-12-27 04:37:30 C 04 46 06.78 +20 35 23.3 r G96
2006-12-27 05:01:33 C 04 46 04.87 +20 35 11.4 r G96
2006-12-27 05:10:24 C 04 46 04.18 +20 35 06.9 r G96
2006-12-27 05:19:18 C 04 46 03.46 +20 35 02.4 r G96
2006-12-27 22:34:52 C 04 44 45.48 +20 26 09.9 r 170
2006-12-27 22:36:44 C 04 44 45.33 +20 26 09.1 r 170
2006-12-27 22:39:12 C 04 44 45.19 +20 26 07.4 r 170
2006-12-29 04:42:31 C 04 42 32.54 +20 10 47.9 17.7 c 704
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)