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
1999-11-16 03:33:45 C 07 21 53.10 +20 40 15.7 c 118
1999-11-16 18:17:15 C 07 21 49.24 +20 35 05.0 360
1999-11-16 18:21:29 C 07 21 49.19 +20 35 03.5 360
1999-11-16 18:24:45 C 07 21 49.17 +20 35 02.1 360
1999-12-08 09:11:33 C 07 06 59.71 +17 06 15.3 17.5 a 704
1999-12-08 09:29:36 C 07 06 58.68 +17 06 07.0 17.5 a 704
1999-12-08 09:47:40 C 07 06 57.67 +17 05 58.9 17.6 a 704
1999-12-08 10:05:45 C 07 06 56.65 +17 05 50.4 17.9 a 704
1999-12-08 10:23:47 C 07 06 55.63 +17 05 41.8 18.0 a 704
1999-12-09 09:58:56 C 07 05 37.60 +16 54 54.2 675
1999-12-09 10:03:08 C 07 05 37.37 +16 54 52.4 675
1999-12-09 10:09:08 C 07 05 37.01 +16 54 49.6 675
1999-12-10 01:15:06 C 07 04 45.21 +16 47 44.8 118
1999-12-13 08:13:47 C 06 59 52.60 +16 10 18.2 i 670
1999-12-13 09:09:08 C 06 59 48.87 +16 09 51.8 i 670
1999-12-14 07:03:21 C 06 58 21.32 +15 59 12.8 17.1 a 704
1999-12-14 07:24:37 C 06 58 19.79 +15 59 01.8 17.5 a 704
1999-12-14 07:45:59 C 06 58 18.36 +15 58 51.8 17.5 a 704
1999-12-14 08:07:19 C 06 58 16.82 +15 58 40.9 17.3 a 704
1999-12-14 08:28:38 C 06 58 15.29 +15 58 30.6 17.4 a 704
1999-12-15 07:46:42 C 06 56 38.93 +15 47 04.9 17.1 a 704
1999-12-15 07:46:50 C 06 56 38.92 +15 47 04.7 17.3 a 704
1999-12-15 08:10:13 C 06 56 37.22 +15 46 53.2 18.3 a 704
1999-12-15 08:10:21 C 06 56 37.21 +15 46 52.9 18.0 a 704
1999-12-15 08:33:13 C 06 56 35.51 +15 46 42.0 18.0 a 704
1999-12-15 08:33:22 C 06 56 35.57 +15 46 41.9 17.8 a 704
1999-12-15 08:55:53 C 06 56 33.89 +15 46 30.7 17.8 a 704
1999-12-15 08:56:03 C 06 56 33.89 +15 46 30.8 17.6 a 704
1999-12-15 09:18:31 C 06 56 32.23 +15 46 19.6 17.4 a 704
1999-12-15 09:18:39 C 06 56 32.24 +15 46 19.5 17.4 a 704
1999-12-15 16:51:44 C 06 56 00.33 +15 42 35.7 360
1999-12-15 16:56:15 C 06 56 00.00 +15 42 33.3 360
1999-12-15 17:01:14 C 06 55 59.63 +15 42 31.0 360
1999-12-16 08:50:01 C 06 54 51.80 +15 34 38.8 i 670
1999-12-16 09:33:51 C 06 54 48.55 +15 34 17.1 i 670
1999-12-16 10:10:55 C 06 54 45.79 +15 33 57.1 i 670
1999-12-17 06:40:22 C 06 53 15.978 +15 23 42.46 l G91
1999-12-17 07:43:37 C 06 53 11.23 +15 23 10.1 i 670
1999-12-17 08:45:29 C 06 53 06.45 +15 22 39.0 i 670
1999-12-30 23:31:05 C 06 25 00.29 +12 29 57.0 610
1999-12-30 23:37:06 C 06 24 59.71 +12 29 54.5 610
1999-12-30 23:43:05 C 06 24 59.13 +12 29 51.9 610
1999-12-30 23:49:05 C 06 24 58.54 +12 29 49.3 610
1999-12-30 23:55:06 C 06 24 57.96 +12 29 46.8 610
2000-01-02 21:51:33 C 06 18 19.05 +11 51 55.1 610
2000-01-02 21:57:35 C 06 18 18.44 +11 51 51.5 610
2000-01-02 22:03:35 C 06 18 17.84 +11 51 48.0 610
2000-01-02 22:09:34 C 06 18 17.24 +11 51 44.4 610
2000-01-02 22:15:35 C 06 18 16.64 +11 51 40.8 610
2000-01-03 14:23:15 C 06 16 44.00 +11 43 02.6 360
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)