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
2022-12-21 16:12:41 C 04 52 07.71 +21 54 00.1 q C97
2022-12-21 16:16:13 C 04 52 07.42 +21 53 58.4 q C97
2022-12-21 16:19:46 C 04 52 07.11 +21 53 56.8 q C97
2022-12-21 16:21:54 C 04 52 06.95 +21 53 56.0 q C97
2022-12-21 16:25:28 C 04 52 06.64 +21 53 54.0 q C97
2022-12-21 17:07:35 C 04 52 02.53 +21 53 30.6 V D29
2022-12-21 17:27:57 C 04 52 00.85 +21 53 20.0 V D29
2022-12-21 17:48:19 C 04 51 59.14 +21 53 09.3 V D29
2022-12-24 05:50:26 C 04 47 11.252 +21 22 04.48 V G96
2022-12-24 05:58:31 C 04 47 10.637 +21 22 00.37 V G96
2022-12-24 06:02:48 C 04 47 10.241 +21 21 59.54 V 703
2022-12-24 06:06:36 C 04 47 09.913 +21 21 55.98 V G96
2022-12-24 06:10:21 C 04 47 09.571 +21 21 53.60 V 703
2022-12-24 06:14:42 C 04 47 09.240 +21 21 52.70 V G96
2022-12-24 06:17:57 C 04 47 08.966 +21 21 50.44 V 703
2022-12-24 06:25:31 C 04 47 08.358 +21 21 46.08 V 703
2022-12-25 06:00:01 C 04 45 18.299 +21 09 32.87 V G96
2022-12-25 06:08:06 C 04 45 17.658 +21 09 28.76 V G96
2022-12-25 06:16:10 C 04 45 17.017 +21 09 24.55 V G96
2022-12-25 06:24:14 C 04 45 16.373 +21 09 20.30 V G96
2022-12-25 15:57:05 B 04 44 32.457 +21 04 22.15 W N86
2022-12-25 16:08:55 B 04 44 31.503 +21 04 15.54 W N86
2022-12-25 16:20:33 B 04 44 30.578 +21 04 09.51 W N86
2022-12-27 06:42:26 C 04 41 36.884 +20 44 21.80 V 703
2022-12-27 06:50:38 C 04 41 36.254 +20 44 17.63 V 703
2022-12-27 06:58:50 C 04 41 35.632 +20 44 13.63 V 703
2022-12-27 07:07:04 C 04 41 35.002 +20 44 08.92 V 703
2022-12-29 12:39:07 C 04 37 43.07 +20 16 43.2 V D29
2022-12-29 12:59:29 C 04 37 41.59 +20 16 33.1 V D29
2022-12-29 13:19:51 C 04 37 40.12 +20 16 23.0 V D29
2023-01-09 06:18:20 C 04 22 15.024 +18 13 05.05 V 703
2023-01-09 06:26:36 C 04 22 14.646 +18 13 00.88 V 703
2023-01-09 06:34:51 C 04 22 14.192 +18 12 57.89 V 703
2023-01-09 06:43:07 C 04 22 13.814 +18 12 53.57 V 703
2023-01-09 15:47:01 C 04 21 47.46 +18 08 54.0 V D29
2023-01-09 16:02:03 C 04 21 46.71 +18 08 47.3 V D29
2023-01-09 16:17:05 C 04 21 45.97 +18 08 40.3 V D29
2023-01-11 11:58:17 C 04 19 46.29 +17 49 53.2 V D29
2023-01-11 12:18:38 C 04 19 45.36 +17 49 44.6 V D29
2023-01-11 12:39:00 C 04 19 44.42 +17 49 36.1 V D29
2023-01-13 05:43:46 C 04 18 01.399 +17 32 37.18 V T05
2023-01-13 05:46:25 C 04 18 01.291 +17 32 36.28 V T05
2023-01-13 05:52:17 C 04 18 01.046 +17 32 33.86 V T05
2023-01-13 06:00:49 C 04 18 00.727 +17 32 30.30 V T05
2023-01-14 06:35:13 C 04 17 03.062 +17 22 37.31 V 703
2023-01-14 06:42:48 C 04 17 02.720 +17 22 34.10 V 703
2023-01-14 06:50:22 C 04 17 02.447 +17 22 31.08 V 703
2023-01-14 06:57:57 C 04 17 02.184 +17 22 28.27 V 703
2023-01-14 07:35:14 C 04 17 01.027 +17 22 15.49 V T05
2023-01-14 07:40:26 C 04 17 00.821 +17 22 13.62 V 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)