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
2009-07-16 23:40:28 C 00 50 06.41 +35 53 23.3 c J05
2009-07-16 23:45:21 C 00 50 06.43 +35 53 27.6 c J05
2009-07-16 23:50:25 C 00 50 06.48 +35 53 32.1 c J05
2009-07-17 23:22:17 C 00 50 14.89 +36 14 17.4 17.1 r C20
2009-07-18 21:47:08 C 00 50 21.12 +36 33 39.2 17.3 r C20
2009-07-21 00:15:01 C 00 50 25.76 +37 16 12.2 17.2 r C20
2009-07-21 00:20:21 C 00 50 25.74 +37 16 16.7 17.3 r C20
2009-07-22 22:02:36 C 00 50 19.85 +37 53 17.8 18.0 r C20
2009-07-22 23:06:51 C 00 50 19.43 +37 54 10.2 17.1 r C20
2009-07-24 23:10:20 C 00 50 00.89 +38 31 35.2 17.1 r C20
2009-07-24 23:14:29 C 00 50 00.85 +38 31 38.0 17.2 r C20
2009-07-25 00:24:57 C 00 49 59.99 +38 32 33.0 17.8 r C20
2009-07-25 00:34:47 C 00 49 59.88 +38 32 40.6 17.6 r C20
2009-07-26 00:23:54 C 00 49 45.94 +38 50 36.4 17.6 r C20
2009-07-26 00:33:04 C 00 49 45.80 +38 50 43.3 17.6 r C20
2009-07-29 23:14:55 C 00 48 19.10 +39 57 53.0 w J10
2009-07-29 23:20:45 C 00 48 18.98 +39 57 57.8 w J10
2009-07-29 23:28:11 C 00 48 18.83 +39 58 02.2 w J10
2009-07-30 23:32:10 C 00 47 47.76 +40 14 05.4 17.6 r C20
2009-07-31 07:32:09 C 00 47 37.22 +40 19 19.0 16.7 c 704
2009-07-31 07:47:45 C 00 47 36.83 +40 19 29.4 16.7 c 704
2009-07-31 08:03:29 C 00 47 36.41 +40 19 39.8 17.2 c 704
2009-07-31 08:19:05 C 00 47 36.01 +40 19 50.5 17.1 c 704
2009-08-01 02:14:22 C 00 47 09.71 +40 31 20.0 w B19
2009-08-01 02:17:36 C 00 47 09.59 +40 31 22.0 w B19
2009-08-01 02:20:49 C 00 47 09.57 +40 31 24.0 w B19
2009-08-04 00:40:20 C 00 45 07.81 +41 13 59.5 17.8 r C20
2009-08-04 00:47:16 C 00 45 07.56 +41 14 03.4 17.3 r C20
2009-08-05 00:35:01 C 00 44 19.41 +41 27 30.6 17.3 r C20
2009-08-05 00:42:43 C 00 44 19.10 +41 27 34.9 17.3 r C20
2009-08-05 20:11:35 C 00 43 37.71 +41 38 08.6 17.8 r C20
2009-08-05 20:19:55 C 00 43 37.36 +41 38 13.4 17.2 r C20
2009-08-06 21:53:17 C 00 42 37.97 +41 51 38.1 17.2 r 084
2009-08-06 22:16:28 C 00 42 37.01 +41 51 50.4 17.0 r 084
2009-08-07 01:03:31 C 00 42 29.76 +41 53 21.1 17.0 r C20
2009-08-07 21:32:11 C 00 41 39.48 +42 03 30.8 17.6 o 084
2009-08-07 21:35:26 C 00 41 39.36 +42 03 32.7 17.3 o 084
2009-08-07 23:05:52 C 00 41 35.71 +42 04 19.6 w 160
2009-08-07 23:08:11 C 00 41 35.62 +42 04 20.7 w 160
2009-08-07 23:10:26 C 00 41 35.51 +42 04 21.9 w 160
2009-08-08 21:20:45 C 00 40 36.89 +42 14 55.4 17.2 r 084
2009-08-08 21:24:11 C 00 40 36.73 +42 14 57.0 17.2 r 084
2009-08-11 20:44:53 C 00 37 06.66 +42 45 43.4 17.6 r 084
2009-08-11 20:48:13 C 00 37 06.49 +42 45 44.6 17.8 r 084
2009-08-11 22:29:43 C 00 37 01.23 +42 46 27.2 o B75
2009-08-11 22:46:49 C 00 36 59.96 +42 46 37.1 17.7 r C20
2009-08-11 23:02:56 C 00 36 59.04 +42 46 43.6 17.6 r C20
2009-08-12 00:40:36 C 00 36 53.46 +42 47 22.0 17.3 r C20
2009-08-12 00:47:23 C 00 36 53.06 +42 47 24.7 17.3 r C20
2009-08-12 22:53:29 C 00 35 41.52 +42 55 41.1 c J05
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)