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
2021-01-11 07:23:45 C 02 24 47.492 +19 59 56.78 U F51
2021-01-11 07:41:13 C 02 24 47.746 +19 59 51.92 U F51
2021-01-11 19:13:35 C 02 24 59.18 +19 56 43.9 V 130
2021-01-11 19:21:33 C 02 24 59.32 +19 56 41.5 V 130
2021-01-11 19:28:24 C 02 24 59.42 +19 56 40.0 V 130
2021-01-13 08:10:56 C 02 25 38.25 +19 47 12.8 V T05
2021-01-13 08:15:36 C 02 25 38.34 +19 47 11.2 V T05
2021-01-13 08:23:31 C 02 25 38.44 +19 47 09.7 V T05
2021-01-13 08:38:42 C 02 25 38.71 +19 47 06.1 V T05
2021-01-14 03:10:28 C 02 26 00.37 +19 42 32.1 U I41
2021-01-14 04:29:35 C 02 26 01.82 +19 42 12.9 U I41
2021-01-15 11:41:26 C 02 26 40.65 +19 34 54.5 q D29
2021-01-15 11:42:42 C 02 26 40.65 +19 34 54.6 q D29
2021-01-15 12:01:48 C 02 26 41.07 +19 34 49.8 q D29
2021-01-15 12:03:04 C 02 26 41.08 +19 34 49.3 q D29
2021-01-15 12:22:09 C 02 26 41.46 +19 34 45.0 q D29
2021-01-15 12:23:26 C 02 26 41.41 +19 34 44.9 q D29
2021-01-16 03:09:11 C 02 27 01.01 +19 31 25.8 U I41
2021-01-16 04:11:00 C 02 27 02.30 +19 31 12.3 U I41
2021-01-17 06:07:49 C 02 27 38.34 +19 25 39.1 V T05
2021-01-17 06:12:26 C 02 27 38.40 +19 25 37.4 V T05
2021-01-17 06:19:54 C 02 27 38.51 +19 25 35.1 V T05
2021-01-17 06:35:17 C 02 27 38.94 +19 25 31.9 V T05
2021-01-18 03:37:09 C 02 28 09.61 +19 21 12.0 U I41
2021-01-18 03:55:22 C 02 28 10.03 +19 21 08.2 U I41
2021-01-18 04:57:52 C 02 28 11.51 +19 20 55.5 U I41
2021-02-09 03:29:32 C 02 47 24.42 +18 22 54.3 U I41
2021-02-09 04:50:38 C 02 47 28.15 +18 22 51.1 U I41
2021-02-11 03:58:28 C 02 49 42.46 +18 21 28.6 U I41
2021-02-11 06:15:32 C 02 49 48.97 +18 21 25.0 U I41
2021-04-02 03:30:05 C 04 06 34.74 +19 14 38.2 U I41
2021-04-02 03:33:42 C 04 06 35.02 +19 14 38.1 U I41
2021-04-03 03:23:23 C 04 08 25.68 +19 16 02.3 U I41
2021-04-03 03:26:59 C 04 08 25.96 +19 16 02.6 U I41
2021-04-03 03:30:36 C 04 08 26.23 +19 16 02.5 U I41
2021-04-03 03:34:13 C 04 08 26.52 +19 16 02.7 U I41
2021-04-04 03:22:15 C 04 10 17.71 +19 17 25.1 U I41
2021-04-04 03:25:13 C 04 10 17.95 +19 17 25.5 U I41
2021-04-04 03:28:11 C 04 10 18.17 +19 17 25.6 U I41
2021-04-04 03:31:09 C 04 10 18.43 +19 17 25.4 U I41
2021-04-04 03:34:07 C 04 10 18.65 +19 17 25.8 U I41
2021-04-08 03:27:06 C 04 17 53.01 +19 22 35.0 U I41
2021-04-08 03:32:45 C 04 17 53.46 +19 22 35.4 U I41
2021-04-08 03:35:35 C 04 17 53.70 +19 22 35.4 U I41
2021-04-09 03:28:20 C 04 19 48.47 +19 23 46.8 U I41
2021-04-09 03:31:09 C 04 19 48.71 +19 23 46.5 U I41
2021-04-09 03:33:59 C 04 19 48.90 +19 23 46.6 U I41
2021-04-09 03:36:50 C 04 19 49.11 +19 23 47.2 U I41
2021-04-09 03:39:41 C 04 19 49.37 +19 23 47.0 U I41
2021-04-10 03:27:57 C 04 21 44.39 +19 24 54.8 U I41
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)