IAA RAS IAA Minor Planet Database

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
2002-11-01 05:49:56 C 00 36 06.38 +30 27 19.0 17.7 c 704
2002-11-01 06:14:06 C 00 36 05.22 +30 26 57.1 18.0 c 704
2002-11-01 07:02:48 C 00 36 02.91 +30 26 13.5 18.0 c 704
2002-11-14 01:55:20 C 00 26 08.85 +26 05 53.0 18.0 c 644
2002-11-14 02:26:13 C 00 26 08.22 +26 05 28.6 18.4 c 644
2002-11-14 02:56:19 C 00 26 07.61 +26 05 04.8 18.0 c 644
2002-11-14 04:12:40 C 00 26 05.93 +26 04 05.7 18.4 c 704
2002-11-14 04:36:54 C 00 26 05.46 +26 03 46.4 18.1 c 704
2002-11-14 05:01:07 C 00 26 04.93 +26 03 26.6 18.2 c 704
2002-11-14 05:25:45 C 00 26 04.41 +26 03 07.3 18.0 c 704
2002-11-17 21:09:44 C 00 24 45.71 +24 55 47.7 – c 240
2002-11-17 21:13:54 C 00 24 45.63 +24 55 43.9 – c 240
2002-11-17 21:22:15 C 00 24 45.51 +24 55 37.5 – c 240
2002-12-06 03:19:48 C 00 26 33.60 +20 27 58.5 19.1 c 704
2002-12-06 03:40:44 C 00 26 33.94 +20 27 49.7 19.4 c 704
2002-12-06 04:01:55 C 00 26 34.39 +20 27 38.7 19.3 c 704
2002-12-06 04:22:51 C 00 26 34.67 +20 27 28.5 19.0 c 704
2002-12-06 04:43:58 C 00 26 35.04 +20 27 18.7 19.1 c 704
2002-12-31 02:12:26 C 00 45 30.70 +17 24 37.9 19.5 c 704
2002-12-31 02:36:04 C 00 45 31.72 +17 24 34.5 19.5 c 704
2002-12-31 02:59:51 C 00 45 32.68 +17 24 31.2 19.5 c 704
2002-12-31 03:23:39 C 00 45 33.74 +17 24 27.0 19.5 c 704
2004-08-19 08:31:56 C 03 53 23.94 +33 47 25.7 19.3 c 704
2004-08-19 09:01:09 C 03 53 25.31 +33 47 31.7 19.8 c 704
2004-08-19 09:15:59 C 03 53 26.04 +33 47 35.2 19.6 c 704
2004-09-13 08:35:14 C 04 13 57.27 +35 36 41.7 19.6 c 704
2004-09-13 08:52:28 C 04 13 57.44 +35 36 44.9 19.8 c 704
2004-09-13 09:09:39 C 04 13 57.69 +35 36 48.3 19.7 c 704
2004-09-13 09:26:45 C 04 13 58.00 +35 36 50.4 19.6 c 704
2004-09-13 09:44:30 C 04 13 58.32 +35 36 53.1 19.7 c 704
2004-10-08 07:42:24 C 04 10 54.74 +36 22 03.5 19.5 c 704
2004-10-08 07:58:04 C 04 10 54.15 +36 22 04.0 19.5 c 704
2004-10-08 08:13:43 C 04 10 53.65 +36 22 02.3 20.1 c 704
2004-10-08 08:45:03 C 04 10 52.79 +36 22 01.9 20.4 c 704
2004-10-10 07:45:37 C 04 09 21.85 +36 20 58.4 19.5 c 704
2004-10-10 08:01:20 C 04 09 21.28 +36 20 58.0 19.8 c 704
2004-10-10 08:17:05 C 04 09 20.63 +36 20 56.6 19.7 c 704
2004-10-10 08:32:48 C 04 09 20.06 +36 20 57.8 19.5 c 704
2004-10-15 08:34:21 C 04 04 33.07 +36 13 48.0 19.2 c 704
2004-10-15 08:50:17 C 04 04 32.28 +36 13 47.0 19.7 c 704
2004-10-15 09:06:14 C 04 04 31.52 +36 13 45.0 19.9 c 704
2004-10-15 09:22:14 C 04 04 30.85 +36 13 45.7 20.1 c 704
2004-10-15 09:38:10 C 04 04 30.02 +36 13 43.4 19.3 c 704
2004-10-24 07:33:29 C 03 52 55.30 +35 41 52.1 18.8 c 704
2004-10-24 07:50:35 C 03 52 54.14 +35 41 48.3 18.9 c 704
2004-10-24 08:07:41 C 03 52 53.04 +35 41 45.2 19.2 c 704
2004-10-24 08:24:49 C 03 52 51.94 +35 41 40.8 19.0 c 704
2004-10-24 08:41:55 C 03 52 50.82 +35 41 38.1 19.1 c 704
2004-11-04 06:09:40 C 03 34 27.12 +34 22 33.9 18.6 c 704
2004-11-04 06:26:52 C 03 34 25.75 +34 22 26.5 18.5 c 704
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)