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
2012-01-17 21:59:39 C 01 45 40.31 +18 33 47.1 r 106
2012-03-16 02:36:59 C 03 06 35.31 +19 27 52.4 r G96
2012-03-16 02:46:57 C 03 06 36.07 +19 27 53.3 r G96
2012-03-16 02:56:51 C 03 06 36.75 +19 27 54.7 r G96
2012-03-16 03:06:47 C 03 06 37.44 +19 27 55.9 r G96
2013-08-07 09:57:21 C 04 13 41.84 +31 21 33.2 o 691
2013-08-07 10:15:47 C 04 13 43.06 +31 21 36.4 o 691
2013-08-07 10:34:14 C 04 13 44.25 +31 21 39.5 o 691
2013-08-13 10:30:19 C 04 22 54.83 +31 44 21.5 o 691
2013-08-13 10:48:44 C 04 22 55.94 +31 44 24.5 o 691
2013-08-13 11:07:09 C 04 22 57.10 +31 44 27.7 o 691
2013-10-17 09:11:04 C 05 10 03.85 +33 16 22.9 o 926
2013-10-17 09:35:28 C 05 10 03.40 +33 16 21.5 o 926
2013-10-17 10:03:16 C 05 10 02.87 +33 16 19.8 o 926
2013-10-30 22:50:09 C 04 59 33.66 +32 44 40.3 q B15
2013-10-30 22:51:17 C 04 59 33.60 +32 44 40.1 q B15
2013-10-30 22:54:43 C 04 59 33.44 +32 44 39.6 q B15
2013-10-30 22:55:52 C 04 59 33.38 +32 44 39.4 q B15
2013-11-01 08:32:29 C 04 57 56.18 +32 39 18.0 o 926
2013-11-01 08:57:09 C 04 57 54.89 +32 39 13.9 o 926
2013-11-01 09:18:25 C 04 57 53.80 +32 39 10.5 o 926
2013-11-04 16:58:24 C 04 53 40.17 +32 24 20.6 q D29
2013-11-04 17:21:19 C 04 53 38.82 +32 24 15.4 q D29
2013-11-04 17:44:13 C 04 53 37.47 +32 24 10.9 q D29
2013-11-07 01:08:19 C 04 50 22.41 +32 12 04.8 c A24
2013-11-07 01:10:24 C 04 50 22.32 +32 12 04.4 c A24
2013-11-07 01:28:31 C 04 50 21.16 +32 12 00.1 c A24
2013-11-07 01:49:56 C 04 50 19.83 +32 11 55.1 c A24
2013-11-07 02:07:22 C 04 50 18.71 +32 11 51.2 c A24
2013-11-07 02:09:27 C 04 50 18.61 +32 11 50.5 c A24
2013-11-09 02:10:31 C 04 47 17.97 +32 00 06.8 q Z81
2013-11-09 02:43:40 C 04 47 15.73 +31 59 58.3 q Z81
2013-11-09 03:49:55 C 04 47 11.33 +31 59 40.6 q Z81
2013-11-11 00:26:21 C 04 44 14.56 +31 47 37.5 q K20
2013-11-11 00:35:19 C 04 44 14.03 +31 47 35.5 q K20
2013-11-11 00:43:37 C 04 44 13.39 +31 47 33.0 q K20
2013-11-11 00:50:38 C 04 44 13.00 +31 47 31.9 q K20
2013-11-11 00:58:24 C 04 44 12.34 +31 47 29.5 q K20
2013-11-11 01:05:25 C 04 44 11.84 +31 47 26.2 q K20
2013-11-11 10:39:12 C 04 43 32.54 +31 44 45.7 q 703
2013-11-11 10:47:11 C 04 43 32.00 +31 44 43.2 q 703
2013-11-11 10:55:12 C 04 43 31.44 +31 44 40.7 q 703
2013-11-11 11:03:12 C 04 43 30.87 +31 44 38.6 q 703
2013-11-12 22:31:37 C 04 41 03.58 +31 34 05.5 q Z81
2013-11-12 22:59:55 C 04 41 01.55 +31 33 57.1 q Z81
2013-11-12 23:28:25 C 04 40 59.50 +31 33 48.6 q Z81
2013-11-13 01:38:23 C 04 40 49.94 +31 33 08.3 c A24
2013-11-13 01:40:28 C 04 40 49.80 +31 33 07.7 c A24
2013-11-13 01:59:16 C 04 40 48.43 +31 33 01.7 c A24
2013-11-13 02:21:21 C 04 40 46.84 +31 32 54.9 c A24
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)