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
2025-08-11 01:59:04 C 00 29 42.858 +43 24 25.76 X R59
2025-08-11 22:09:07 C 00 28 30.420 +43 31 37.99 Z C23
2025-08-11 22:41:55 C 00 28 28.428 +43 31 50.23 Z C23
2025-08-11 23:04:41 B 00 28 26.882 +43 31 59.67 W G34
2025-08-11 23:09:22 B 00 28 26.577 +43 32 01.53 W G34
2025-08-11 23:14:04 B 00 28 26.285 +43 32 03.22 W G34
2025-08-11 23:18:45 B 00 28 25.960 +43 32 04.83 W G34
2025-08-12 20:33:51 C 00 27 06.547 +43 39 10.01 Z C23
2025-08-12 20:36:10 C 00 27 06.432 +43 39 10.58 Z C23
2025-08-12 21:35:32 C 00 27 02.501 +43 39 31.43 Z C23
2025-08-12 22:46:36 B 00 26 57.59 +43 39 59.6 X L76
2025-08-12 22:49:51 B 00 26 57.39 +43 40 00.8 X L76
2025-08-12 22:53:21 B 00 26 57.11 +43 40 02.1 X L76
2025-08-12 22:56:36 B 00 26 56.92 +43 40 03.1 X L76
2025-08-12 22:59:51 B 00 26 56.69 +43 40 04.1 X L76
2025-08-12 23:03:06 B 00 26 56.47 +43 40 05.2 X L76
2025-08-12 23:06:20 B 00 26 56.26 +43 40 06.4 X L76
2025-08-12 23:09:35 B 00 26 56.02 +43 40 07.3 X L76
2025-08-12 23:12:49 B 00 26 55.83 +43 40 08.6 X L76
2025-08-12 23:16:04 B 00 26 55.60 +43 40 09.7 X L76
2025-08-13 01:27:54 C 00 26 46.87 +43 40 52.2 Z L04
2025-08-13 01:34:57 C 00 26 46.39 +43 40 54.5 Z L04
2025-08-13 01:42:08 C 00 26 45.90 +43 40 56.9 Z L04
2025-08-13 22:14:55 B 00 25 25.872 +43 47 18.28 W M73
2025-08-13 22:21:56 B 00 25 25.363 +43 47 20.33 W M73
2025-08-13 22:28:36 B 00 25 24.890 +43 47 22.63 W M73
2025-08-14 23:19:38 C 00 23 44.376 +43 54 06.19 Z C23
2025-08-14 23:21:55 C 00 23 44.249 +43 54 06.80 Z C23
2025-08-14 23:23:40 C 00 23 44.117 +43 54 07.06 Z C23
2025-08-15 21:59:45 C 00 22 09.199 +43 59 38.90 Z C23
2025-08-15 22:20:01 C 00 22 07.783 +43 59 44.38 Z C23
2025-08-16 09:43:21 C 00 21 18.943 +44 02 23.68 V T05
2025-08-16 09:53:17 C 00 21 18.194 +44 02 26.23 V T05
2025-08-16 10:03:14 C 00 21 17.424 +44 02 28.64 V T05
2025-08-16 10:13:11 C 00 21 16.661 +44 02 31.02 V T05
2025-08-17 21:46:23 B 00 18 38.09 +44 09 12.3 X L76
2025-08-17 21:49:28 B 00 18 37.84 +44 09 13.1 X L76
2025-08-17 21:52:34 B 00 18 37.60 +44 09 13.5 X L76
2025-08-17 21:55:38 B 00 18 37.35 +44 09 14.1 X L76
2025-08-17 21:58:43 B 00 18 37.11 +44 09 14.8 X L76
2025-08-17 22:01:48 B 00 18 36.86 +44 09 15.3 X L76
2025-08-17 22:04:53 B 00 18 36.61 +44 09 15.9 X L76
2025-08-17 22:07:59 B 00 18 36.38 +44 09 16.5 X L76
2025-08-17 22:11:04 B 00 18 36.13 +44 09 17.1 X L76
2025-08-17 22:14:09 B 00 18 35.89 +44 09 17.5 X L76
2025-08-18 20:17:24 C 00 16 54.56 +44 12 32.0 Z L04
2025-08-18 20:21:41 C 00 16 54.24 +44 12 32.7 Z L04
2025-08-18 22:58:04 C 00 16 41.762 +44 12 53.89 Z C23
2025-08-18 23:29:02 C 00 16 39.245 +44 12 59.40 Z C23
2025-08-21 21:29:40 C 00 10 58.087 +44 18 25.99 Z C23
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)