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
2025-09-10 11:42:07 C 23 27 29.162 +41 34 06.49 V T08
2025-09-10 11:50:57 C 23 27 28.315 +41 34 00.12 V T08
2025-09-10 23:25:04 B 23 26 26.398 +41 25 29.03 V L65
2025-09-10 23:29:15 B 23 26 25.997 +41 25 25.97 V L65
2025-09-10 23:33:27 B 23 26 25.608 +41 25 22.91 V L65
2025-09-11 12:01:32 C 23 25 18.504 +41 16 14.27 V T05
2025-09-11 12:05:28 C 23 25 18.108 +41 16 11.21 V T05
2025-09-11 12:14:50 C 23 25 17.254 +41 16 04.08 V T05
2025-09-11 12:28:36 C 23 25 15.955 +41 15 53.57 V T05
2025-09-12 04:22:34 B 23 23 52.54 +41 03 41.9 Z W37
2025-09-12 05:11:47 B 23 23 48.02 +41 03 04.1 Z W37
2025-09-12 06:01:09 B 23 23 43.49 +41 02 25.9 Z W37
2025-09-12 10:48:00 C 23 23 18.444 +40 58 47.89 V T08
2025-09-12 10:53:17 C 23 23 17.959 +40 58 43.54 V T08
2025-09-12 11:00:37 C 23 23 17.278 +40 58 37.78 V T08
2025-09-12 11:49:39 C 23 23 12.734 +40 57 58.93 V T08
2025-09-14 06:54:29 C 23 19 31.339 +40 22 59.74 V G96
2025-09-14 07:01:55 C 23 19 30.734 +40 22 53.83 V G96
2025-09-14 07:09:22 C 23 19 30.047 +40 22 47.39 V G96
2025-09-14 07:16:52 C 23 19 29.356 +40 22 41.05 V G96
2025-09-14 10:13:41 C 23 19 14.494 +40 20 15.14 V T05
2025-09-14 10:18:59 C 23 19 14.021 +40 20 10.72 V T05
2025-09-14 11:05:33 C 23 19 09.893 +40 19 31.12 V T05
2025-09-14 11:17:29 C 23 19 08.830 +40 19 21.04 V T05
2025-09-15 05:11:19 C 23 17 40.135 +40 03 59.69 V 703
2025-09-15 05:14:42 C 23 17 39.844 +40 03 57.02 V 703
2025-09-15 05:18:05 C 23 17 39.534 +40 03 53.93 V 703
2025-09-15 05:21:28 C 23 17 39.253 +40 03 51.16 V 703
2025-09-15 09:26:30 C 23 17 18.811 +40 00 22.03 V T08
2025-09-15 09:28:28 C 23 17 18.636 +40 00 20.27 V T08
2025-09-15 09:32:27 C 23 17 18.283 +40 00 16.88 V T08
2025-09-15 09:46:23 C 23 17 17.078 +40 00 04.72 V T08
2025-09-15 19:04:45 C 23 16 31.978 +39 51 47.02 X M26
2025-09-15 19:10:49 C 23 16 31.464 +39 51 41.87 X M26
2025-09-15 19:16:52 C 23 16 30.950 +39 51 36.76 X M26
2025-09-15 20:49:18 B 23 16 23.186 +39 50 16.58 V 160
2025-09-15 20:53:59 B 23 16 22.778 +39 50 12.52 V 160
2025-09-15 20:57:08 B 23 16 22.495 +39 50 09.85 V 160
2025-09-15 21:02:17 B 23 16 21.67 +39 50 05.1 X L76
2025-09-15 21:05:32 B 23 16 21.41 +39 50 02.2 X L76
2025-09-15 21:08:46 B 23 16 21.12 +39 49 59.7 X L76
2025-09-15 21:12:00 B 23 16 20.84 +39 49 56.8 X L76
2025-09-15 21:15:15 B 23 16 20.57 +39 49 53.6 X L76
2025-09-15 21:18:30 B 23 16 20.30 +39 49 50.9 X L76
2025-09-15 21:21:44 B 23 16 20.03 +39 49 47.9 X L76
2025-09-16 01:57:04 C 23 15 57.442 +39 45 47.70 V R17
2025-09-16 02:16:37 C 23 15 55.786 +39 45 30.10 V R17
2025-09-16 02:36:11 C 23 15 54.130 +39 45 12.38 V R17
2025-09-16 02:55:44 C 23 15 52.450 +39 44 54.64 V R17
2025-09-16 10:19:01 C 23 15 17.201 +39 38 20.94 V T08
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)