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
2016-08-11 21:06:48 C 16 16 11.33 +31 24 05.2 V 160
2016-08-11 21:23:58 C 16 16 17.39 +31 23 48.3 q C03
2016-08-11 21:27:36 C 16 16 18.65 +31 23 46.6 q C03
2016-08-11 21:30:13 C 16 16 19.94 +31 23 44.5 q C03
2016-08-12 20:36:40 C 16 24 20.77 +31 12 12.3 q 160
2016-08-12 20:38:43 C 16 24 21.46 +31 12 11.0 q 160
2016-08-12 20:41:06 C 16 24 22.25 +31 12 09.9 q 160
2016-08-13 12:32:09 C 16 29 43.89 +31 03 19.3 q D29
2016-08-13 12:52:31 C 16 29 50.53 +31 03 06.9 q D29
2016-08-13 13:12:52 C 16 29 57.18 +31 02 54.3 q D29
2016-08-13 20:37:30 C 16 32 25.00 +30 58 21.8 q 160
2016-08-13 20:37:56 C 16 32 25.12 +30 58 21.6 V 160
2016-08-13 20:39:30 C 16 32 25.61 +30 58 21.6 q 160
2016-08-13 20:39:56 C 16 32 25.78 +30 58 20.5 V 160
2016-08-13 20:41:56 C 16 32 26.41 +30 58 19.1 V 160
2016-08-13 20:41:56 C 16 32 26.40 +30 58 19.4 q 160
2016-08-13 21:34:19 C 16 32 45.00 +30 58 19.5 r Y00
2016-08-13 21:36:23 C 16 32 45.68 +30 58 19.4 r Y00
2016-08-13 21:37:50 C 16 32 46.11 +30 58 17.9 r Y00
2016-08-14 20:47:56 C 16 40 16.30 +30 42 54.8 q 160
2016-08-14 20:49:11 C 16 40 16.74 +30 42 53.7 q D08
2016-08-14 20:49:53 C 16 40 16.90 +30 42 53.6 q 160
2016-08-14 20:51:47 C 16 40 17.50 +30 42 52.1 q 160
2016-08-14 21:52:51 C 16 40 36.74 +30 42 08.8 q D08
2016-08-14 22:12:42 C 16 40 42.99 +30 41 54.6 q D08
2016-08-14 22:27:14 C 16 40 47.59 +30 41 44.3 q D08
2016-08-16 15:12:39 S 16 53 26.33 +30 12 46.3 L C51
2016-08-16 18:21:20 S 16 54 22.94 +30 10 22.8 L C51
2016-08-16 19:55:46 S 16 54 51.16 +30 09 10.5 L C51
2016-08-16 21:30:01 S 16 55 19.28 +30 07 58.4 L C51
2016-08-16 21:48:49 C 16 55 23.82 +30 07 31.3 q Z52
2016-08-16 23:04:27 S 16 55 47.36 +30 06 45.6 L C51
2016-08-16 23:06:11 C 16 55 46.53 +30 06 29.2 q Z52
2016-08-17 00:14:47 C 16 56 06.74 +30 05 33.8 q Z52
2016-08-17 00:38:42 S 16 56 15.35 +30 05 32.9 L C51
2016-08-17 02:13:08 S 16 56 43.34 +30 04 19.4 L C51
2016-08-17 03:47:23 S 16 57 11.196 +30 03 06.23 L C51
2016-08-17 05:21:49 S 16 57 39.04 +30 01 52.3 L C51
2016-08-17 06:56:04 S 16 58 06.76 +30 00 38.7 L C51
2016-08-17 08:30:30 S 16 58 34.48 +29 59 24.1 L C51
2016-08-17 11:39:01 S 16 59 29.63 +29 56 55.5 L C51
2016-08-17 11:39:11 S 16 59 29.69 +29 56 55.1 L C51
2016-08-17 14:47:42 S 17 00 24.58 +29 54 25.6 L C51
2016-08-17 14:47:52 S 17 00 24.63 +29 54 25.1 L C51
2016-08-17 20:43:02 C 17 02 06.64 +29 49 28.8 q Z52
2016-08-17 21:19:12 C 17 02 16.90 +29 48 58.8 q Z52
2016-08-17 21:47:23 C 17 02 24.87 +29 48 35.5 q Z52
2016-08-18 11:51:40 C 17 06 25.33 +29 37 12.6 o 300
2016-08-18 11:53:18 C 17 06 25.69 +29 37 12.0 o 300
2016-08-18 11:54:36 C 17 06 26.10 +29 37 09.7 o 300
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)