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
2013-12-29 21:38:41 C 03 24 22.46 +22 04 54.1 c A24
2013-12-29 21:39:43 C 03 24 22.43 +22 04 53.4 c A24
2013-12-30 04:34:27 C 03 24 08.16 +22 01 30.9 q G96
2013-12-30 04:47:30 C 03 24 07.69 +22 01 24.5 q G96
2013-12-30 05:00:33 C 03 24 07.21 +22 01 18.0 q G96
2013-12-30 05:13:35 C 03 24 06.75 +22 01 11.7 q G96
2013-12-31 16:25:51 C 03 22 57.86 +21 44 08.5 o C41
2013-12-31 16:27:19 C 03 22 57.80 +21 44 08.4 o C41
2013-12-31 16:28:47 C 03 22 57.76 +21 44 07.4 o C41
2013-12-31 17:12:38 C 03 22 56.32 +21 43 46.8 o C41
2013-12-31 17:14:13 C 03 22 56.18 +21 43 46.3 o C41
2013-12-31 17:15:44 C 03 22 56.21 +21 43 45.1 o C41
2014-01-01 13:40:01 C 03 22 19.11 +21 34 10.0 q D29
2014-01-01 14:25:50 C 03 22 17.69 +21 33 48.7 q D29
2014-01-01 15:11:38 C 03 22 16.28 +21 33 27.1 q D29
2014-01-04 03:33:23 C 03 20 40.11 +21 06 03.5 R G45
2014-01-04 03:51:32 C 03 20 39.72 +21 05 56.1 R G45
2014-01-04 04:09:55 C 03 20 39.19 +21 05 47.6 R G45
2014-01-04 04:28:50 C 03 20 38.71 +21 05 40.2 R G45
2014-01-04 04:47:37 C 03 20 38.20 +21 05 31.3 R G45
2014-01-04 05:24:50 C 03 20 37.26 +21 05 14.7 R G45
2014-01-05 04:13:55 C 03 20 06.02 +20 55 20.1 R G45
2014-01-05 04:33:10 C 03 20 05.55 +20 55 11.6 R G45
2014-01-05 04:51:43 C 03 20 05.09 +20 55 03.2 R G45
2014-01-05 05:10:24 C 03 20 04.67 +20 54 55.2 R G45
2014-01-05 05:29:04 C 03 20 04.25 +20 54 47.2 R G45
2014-01-06 01:38:06 C 03 19 39.31 +20 46 14.2 R G45
2014-01-06 01:55:14 C 03 19 38.90 +20 46 06.3 R G45
2014-01-06 02:13:58 C 03 19 38.49 +20 45 58.9 R G45
2014-01-06 02:33:45 C 03 19 38.04 +20 45 50.8 R G45
2014-01-06 02:53:38 C 03 19 37.59 +20 45 42.6 R G45
2014-01-06 03:13:15 C 03 19 37.16 +20 45 34.4 R G45
2014-01-07 01:38:34 C 03 19 11.68 +20 36 16.3 R G45
2014-01-07 01:55:58 C 03 19 11.35 +20 36 09.4 R G45
2014-01-07 02:14:48 C 03 19 10.99 +20 36 01.5 R G45
2014-01-07 02:34:24 C 03 19 10.58 +20 35 53.6 R G45
2014-01-07 02:55:33 C 03 19 10.20 +20 35 44.7 R G45
2014-01-07 03:15:45 C 03 19 09.77 +20 35 37.0 R G45
2014-01-14 02:02:22 C 03 17 16.84 +19 33 45.5 u H21
2014-01-14 02:07:30 C 03 17 16.81 +19 33 43.6 u H21
2014-01-14 02:12:42 C 03 17 16.75 +19 33 41.2 u H21
2014-01-16 03:36:28 C 03 17 07.96 +19 17 46.7 u H21
2014-01-16 03:42:16 C 03 17 07.98 +19 17 45.0 u H21
2014-01-16 03:48:02 C 03 17 07.93 +19 17 43.1 u H21
2014-01-18 02:45:14 C 03 17 09.98 +19 03 37.8 N I41
2014-01-18 03:46:12 C 03 17 10.03 +19 03 20.1 N I41
2014-01-18 04:47:50 C 03 17 10.07 +19 03 02.3 N I41
2014-01-18 05:48:40 C 03 17 10.13 +19 02 44.0 N I41
2014-01-18 06:48:29 C 03 17 10.23 +19 02 26.7 N I41
2014-01-20 02:25:59 C 03 17 21.28 +18 50 15.6 q 703
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)