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
2025-07-12 23:53:00 B 00 46 22.946 +35 19 04.22 W M73
2025-07-13 13:14:50 C 00 46 27.106 +35 31 48.36 V T05
2025-07-13 13:20:41 C 00 46 27.091 +35 31 54.08 V T05
2025-07-13 13:29:20 C 00 46 27.130 +35 32 02.62 V T05
2025-07-13 13:37:13 C 00 46 27.115 +35 32 09.96 V T05
2025-07-14 10:34:18 C 00 46 32.498 +35 51 48.56 V T05
2025-07-14 10:39:49 C 00 46 32.602 +35 51 53.75 V T05
2025-07-14 10:49:12 C 00 46 32.518 +35 52 02.78 V T05
2025-07-14 11:03:47 C 00 46 32.561 +35 52 16.72 V T05
2025-07-14 21:44:41 B 00 46 34.308 +36 02 14.14 W M73
2025-07-14 21:53:22 B 00 46 34.334 +36 02 22.09 W M73
2025-07-14 22:01:54 B 00 46 34.342 +36 02 30.48 W M73
2025-07-17 00:16:56 C 00 46 36.737 +36 48 06.80 Z C23
2025-07-17 00:32:57 C 00 46 36.646 +36 48 21.89 Z C23
2025-07-23 09:20:19 C 00 45 35.02 +38 56 49.7 q U55
2025-07-23 09:29:05 C 00 45 34.85 +38 56 56.4 q U55
2025-07-23 09:38:11 C 00 45 34.67 +38 57 04.0 q U55
2025-07-23 09:50:45 C 00 45 35.083 +38 57 15.91 V T05
2025-07-23 09:54:49 C 00 45 35.038 +38 57 19.30 V T05
2025-07-23 09:58:48 C 00 45 34.987 +38 57 22.57 V T05
2025-07-23 10:03:15 C 00 45 34.934 +38 57 26.17 V T05
2025-07-23 10:14:48 C 00 45 34.762 +38 57 35.60 V T05
2025-07-23 11:10:41 C 00 45 33.912 +38 58 21.65 V T05
2025-07-23 11:55:18 C 00 45 33.197 +38 58 57.94 V T05
2025-07-24 09:16:57 C 00 45 14.68 +39 15 26.5 q U55
2025-07-24 09:26:08 C 00 45 14.46 +39 15 34.0 q U55
2025-07-24 09:35:03 C 00 45 14.36 +39 15 41.2 q U55
2025-07-25 10:13:51 C 00 44 50.683 +39 34 26.83 V T05
2025-07-25 10:18:46 C 00 44 50.645 +39 34 30.83 V T05
2025-07-25 10:26:03 C 00 44 50.446 +39 34 36.41 V T05
2025-07-25 10:35:35 C 00 44 50.266 +39 34 43.86 V T05
2025-07-26 00:56:08 C 00 44 34.574 +39 45 21.82 V R17
2025-07-26 01:18:35 C 00 44 34.116 +39 45 39.24 V R17
2025-07-26 01:41:16 C 00 44 33.626 +39 45 56.56 V R17
2025-07-26 01:53:55 C 00 44 32.890 +39 46 03.07 Z C23
2025-07-26 02:00:23 C 00 44 32.796 +39 46 08.51 Z C23
2025-07-26 02:03:22 C 00 44 33.144 +39 46 13.76 V R17
2025-07-27 09:06:40 C 00 43 54.69 +40 08 41.0 q U55
2025-07-27 09:15:34 C 00 43 54.50 +40 08 48.0 q U55
2025-07-27 09:24:28 C 00 43 54.35 +40 08 54.4 q U55
2025-07-27 13:17:44 C 00 43 48.998 +40 11 48.52 V T05
2025-07-27 13:24:42 C 00 43 48.821 +40 11 53.52 V T05
2025-07-27 13:36:47 C 00 43 48.473 +40 12 02.34 V T05
2025-07-27 13:48:08 C 00 43 48.158 +40 12 10.51 V T05
2025-07-28 09:00:01 C 00 43 21.54 +40 25 29.2 q U55
2025-07-28 09:04:06 C 00 43 21.50 +40 25 31.5 q U55
2025-07-28 09:09:12 C 00 43 21.35 +40 25 36.0 q U55
2025-07-28 09:13:09 C 00 43 21.10 +40 25 39.2 q U55
2025-07-28 09:17:58 C 00 43 21.06 +40 25 42.2 q U55
2025-07-28 09:21:48 C 00 43 20.94 +40 25 45.8 q U55
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)