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
2018-12-09 07:33:09 C 00 25 26.45 +19 41 34.5 U T08
2018-12-09 07:45:56 C 00 25 26.69 +19 41 29.7 U T08
2018-12-09 07:58:35 C 00 25 26.94 +19 41 23.7 U T08
2018-12-10 03:40:54 C 00 25 55.26 +19 33 12.7 V 703
2018-12-10 03:49:04 C 00 25 55.44 +19 33 09.1 V 703
2018-12-10 03:57:14 C 00 25 55.59 +19 33 05.4 V 703
2018-12-10 04:05:24 C 00 25 55.73 +19 33 02.4 V 703
2018-12-12 02:17:00 C 00 27 06.30 +19 14 47.3 V G96
2018-12-12 02:25:15 C 00 27 06.49 +19 14 44.2 V G96
2018-12-12 02:33:28 C 00 27 06.70 +19 14 41.1 V G96
2018-12-12 02:41:41 C 00 27 06.90 +19 14 38.0 V G96
2018-12-20 03:53:50 C 00 33 03.57 +18 11 27.4 V G96
2018-12-20 04:01:13 C 00 33 03.84 +18 11 25.4 V G96
2018-12-20 04:08:36 C 00 33 04.07 +18 11 23.5 V G96
2018-12-20 04:15:59 C 00 33 04.30 +18 11 21.5 V G96
2019-01-04 05:26:17 C 00 47 52.863 +17 02 52.45 U F51
2019-01-04 05:44:28 C 00 47 53.684 +17 02 50.36 U F51
2019-01-04 06:02:44 C 00 47 54.514 +17 02 48.35 U F51
2019-01-04 06:21:00 C 00 47 55.343 +17 02 46.22 U F51
2019-01-22 10:35:09 C 01 10 35.47 +16 46 15.5 q D29
2019-01-22 10:55:31 C 01 10 36.75 +16 46 16.0 q D29
2019-01-25 05:52:35 C 01 14 26.730 +16 48 34.22 U F51
2019-01-25 06:11:17 C 01 14 27.793 +16 48 35.01 U F51
2019-01-25 06:30:05 C 01 14 28.871 +16 48 35.70 U F51
2019-01-25 06:48:48 C 01 14 29.937 +16 48 36.43 U F51
2020-06-17 11:06:26 C 02 08 07.01 +25 19 13.6 U I41
2020-06-17 11:13:43 C 02 08 07.60 +25 19 16.9 U I41
2020-06-17 11:21:01 C 02 08 08.20 +25 19 20.5 U I41
2020-06-17 11:28:19 C 02 08 08.80 +25 19 24.1 U I41
2020-06-19 11:07:03 C 02 12 03.71 +25 41 35.8 U I41
2020-06-19 11:14:08 C 02 12 04.27 +25 41 39.1 U I41
2020-06-19 11:21:13 C 02 12 04.85 +25 41 42.4 U I41
2020-06-23 11:04:47 C 02 19 51.02 +26 24 58.3 U I41
2020-06-23 11:11:48 C 02 19 51.59 +26 25 01.6 U I41
2020-06-23 11:18:49 C 02 19 52.15 +26 25 04.5 U I41
2020-06-23 11:25:52 C 02 19 52.71 +26 25 07.8 U I41
2020-06-25 11:06:56 C 02 23 41.96 +26 46 01.3 U I41
2020-06-25 11:14:02 C 02 23 42.52 +26 46 04.3 U I41
2020-06-25 11:21:09 C 02 23 43.09 +26 46 07.5 U I41
2020-06-25 11:28:18 C 02 23 43.66 +26 46 10.6 U I41
2020-07-18 10:26:04 C 03 05 12.89 +30 17 35.7 U I41
2020-07-18 11:20:59 C 03 05 16.71 +30 17 54.4 U I41
2020-07-21 10:19:39 C 03 10 12.71 +30 41 22.4 U I41
2020-07-21 11:12:44 C 03 10 16.35 +30 41 40.2 U I41
2020-07-24 10:12:54 C 03 15 05.59 +31 04 19.8 U I41
2020-07-24 11:07:35 C 03 15 09.21 +31 04 37.4 U I41
2020-07-30 13:32:36 C 03 24 42.466 +31 48 52.28 U F51
2020-07-30 13:50:16 C 03 24 43.569 +31 48 57.59 U F51
2020-07-30 14:07:57 C 03 24 44.678 +31 49 02.83 U F51
2020-07-30 14:25:35 C 03 24 45.774 +31 49 08.07 U F51
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)