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
2025-06-30 01:09:02 C 00 42 34.814 +29 48 01.15 Z C23
2025-06-30 01:29:22 C 00 42 35.138 +29 48 25.02 Z C23
2025-06-30 01:37:17 C 00 42 35.244 +29 48 34.70 Z C23
2025-06-30 22:29:04 B 00 42 56.712 +30 13 07.21 W M73
2025-06-30 22:33:25 B 00 42 56.806 +30 13 12.36 W M73
2025-06-30 22:39:49 B 00 42 56.830 +30 13 20.21 W M73
2025-07-01 02:59:25 C 00 43 01.193 +30 18 19.62 V R17
2025-07-01 03:19:44 C 00 43 01.476 +30 18 43.70 V R17
2025-07-01 03:40:00 C 00 43 01.757 +30 19 07.82 V R17
2025-07-01 04:00:02 C 00 43 02.023 +30 19 31.51 V R17
2025-07-01 14:14:33 C 00 43 11.964 +30 31 24.10 V T05
2025-07-01 14:28:55 C 00 43 12.127 +30 31 40.84 V T05
2025-07-01 14:36:52 C 00 43 12.230 +30 31 50.16 V T05
2025-07-01 14:45:10 C 00 43 12.322 +30 31 59.88 V T05
2025-07-02 14:20:21 C 00 43 35.150 +30 58 54.01 V T05
2025-07-02 14:25:38 C 00 43 35.191 +30 58 59.99 V T05
2025-07-02 14:30:56 C 00 43 35.263 +30 59 06.14 V T05
2025-07-02 14:38:32 C 00 43 35.352 +30 59 14.86 V T05
2025-07-02 14:52:53 C 00 43 35.474 +30 59 31.45 V T05
2025-07-03 14:18:50 C 00 43 57.336 +31 25 49.51 V T08
2025-07-03 14:23:48 C 00 43 57.410 +31 25 55.13 V T08
2025-07-03 14:26:05 C 00 43 57.442 +31 25 57.83 V T08
2025-07-03 14:31:57 C 00 43 57.480 +31 26 04.24 V T08
2025-07-03 14:32:37 C 00 43 57.478 +31 26 05.03 V T08
2025-07-03 14:41:35 C 00 43 57.576 +31 26 15.18 V T08
2025-07-03 14:55:05 C 00 43 57.643 +31 26 29.47 V T08
2025-07-06 13:13:38 C 00 44 57.072 +32 42 56.99 V T05
2025-07-06 13:18:14 C 00 44 57.103 +32 43 02.10 V T05
2025-07-06 13:25:36 C 00 44 57.178 +32 43 10.16 V T05
2025-07-06 13:37:27 C 00 44 57.274 +32 43 22.91 V T05
2025-07-06 13:44:32 C 00 44 57.329 +32 43 30.62 X F51
2025-07-06 13:58:55 C 00 44 57.453 +32 43 46.16 X F51
2025-07-06 14:13:22 C 00 44 57.573 +32 44 01.77 X F51
2025-07-06 14:27:51 C 00 44 57.688 +32 44 17.40 X F51
2025-07-09 00:24:59 C 00 45 37.937 +33 44 27.56 Z C23
2025-07-09 00:50:24 C 00 45 38.225 +33 44 54.02 Z C23
2025-07-09 13:44:08 C 00 45 45.821 +33 58 10.96 V T05
2025-07-09 13:49:05 C 00 45 45.840 +33 58 16.07 V T05
2025-07-09 13:53:42 C 00 45 45.866 +33 58 20.64 V T05
2025-07-09 14:23:45 C 00 45 46.030 +33 58 51.71 V T05
2025-07-10 13:15:48 C 00 45 58.740 +34 21 48.31 V T05
2025-07-10 13:20:30 C 00 45 58.764 +34 21 53.21 V T05
2025-07-10 13:29:42 C 00 45 58.805 +34 22 02.32 V T05
2025-07-10 13:45:12 C 00 45 58.879 +34 22 18.23 V T05
2025-07-11 13:47:40 C 00 46 10.162 +34 46 03.79 V T08
2025-07-11 14:01:19 C 00 46 10.193 +34 46 17.65 V T08
2025-07-11 14:11:31 C 00 46 10.217 +34 46 27.88 V T08
2025-07-11 14:16:08 C 00 46 10.229 +34 46 32.45 V T08
2025-07-12 23:37:43 B 00 46 22.949 +35 18 50.11 W M73
2025-07-12 23:45:33 B 00 46 22.992 +35 18 56.70 W M73
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)