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
2020-10-10 12:17:51 C 04 06 07.64 +36 26 42.9 – V T05
2020-10-11 13:44:18 C 04 05 10.68 +36 25 37.6 – V T08
2020-10-11 13:54:30 C 04 05 10.28 +36 25 36.6 – V T08
2020-10-11 13:58:37 C 04 05 10.08 +36 25 36.4 – V T08
2020-10-11 13:59:59 C 04 05 10.09 +36 25 37.1 – V T08
2020-10-11 14:49:35 C 04 05 08.06 +36 25 33.8 – V T08
2020-10-11 14:51:04 C 04 05 07.92 +36 25 33.9 – V T08
2020-10-11 15:10:16 C 04 05 07.21 +36 25 32.6 – V T08
2020-10-11 15:14:55 C 04 05 06.96 +36 25 32.5 – V T08
2020-10-13 07:35:22 C 04 03 30.17 +36 23 08.0 – V 703
2020-10-13 07:43:00 C 04 03 29.79 +36 23 08.2 – V 703
2020-10-13 07:50:39 C 04 03 29.49 +36 23 07.3 – V 703
2020-10-13 07:58:17 C 04 03 29.17 +36 23 06.7 – V 703
2020-10-14 12:28:56 C 04 02 14.81 +36 20 58.4 – V T05
2020-10-14 12:52:10 C 04 02 13.78 +36 20 56.8 – V T05
2020-10-14 13:33:16 C 04 02 11.82 +36 20 53.4 – V T05
2020-10-14 13:37:53 C 04 02 11.56 +36 20 52.9 – V T05
2020-10-15 11:56:00 C 04 01 10.67 +36 18 53.2 – V T08
2020-10-15 11:58:40 C 04 01 10.58 +36 18 52.8 – V T08
2020-10-15 12:06:37 C 04 01 10.16 +36 18 52.3 – V T08
2020-10-15 12:13:57 C 04 01 09.81 +36 18 51.7 – V T08
2020-10-19 07:10:02 C 03 56 34.17 +36 07 50.4 – V 703
2020-10-19 07:17:45 C 03 56 33.71 +36 07 50.1 – V 703
2020-10-19 07:25:26 C 03 56 33.37 +36 07 47.6 – V 703
2020-10-19 07:33:09 C 03 56 32.88 +36 07 47.1 – V 703
2020-10-19 11:16:30 C 03 56 20.59 +36 07 16.7 – V T08
2020-10-19 11:19:10 C 03 56 20.46 +36 07 16.1 – V T08
2020-10-19 11:27:08 C 03 56 20.04 +36 07 14.7 – V T08
2020-10-19 11:34:54 C 03 56 19.56 +36 07 13.8 – V T08
2020-10-20 04:11:34 C 03 55 24.66 +36 04 37.2 – V W33
2020-10-20 04:14:25 C 03 55 24.45 +36 04 36.7 – V W33
2020-10-20 04:17:17 C 03 55 24.27 +36 04 36.1 – V W33
2020-10-22 07:41:19 C 03 52 25.09 +35 55 37.6 – V G96
2020-10-22 07:50:28 C 03 52 24.52 +35 55 35.9 – V G96
2020-10-22 07:57:53 C 03 52 24.07 +35 55 34.5 – V G96
2020-10-22 08:05:21 C 03 52 23.60 +35 55 33.1 – V G96
2020-10-23 06:25:18 C 03 51 02.21 +35 51 06.5 – V 703
2020-10-23 06:32:53 C 03 51 01.79 +35 51 04.8 – V 703
2020-10-23 06:40:28 C 03 51 01.30 +35 51 03.3 – V 703
2020-10-23 06:48:02 C 03 51 00.77 +35 51 02.6 – V 703
2020-10-24 12:46:07 C 03 49 07.49 +35 44 36.7 – V T08
2020-10-24 12:50:46 C 03 49 07.18 +35 44 35.7 – V T08
2020-10-24 12:59:24 C 03 49 06.60 +35 44 33.7 – V T08
2020-10-24 13:50:19 C 03 49 03.23 +35 44 21.8 – V T08
2020-10-25 12:01:49 C 03 47 37.41 +35 39 11.3 – V T05
2020-10-25 12:07:48 C 03 47 36.96 +35 39 10.2 – V T05
2020-10-25 12:15:50 C 03 47 36.42 +35 39 07.7 – V T05
2020-10-25 12:30:00 C 03 47 35.49 +35 39 04.2 – V T05
2020-10-28 06:20:06 C 03 43 09.17 +35 21 40.6 – V 703
2020-10-28 06:35:13 C 03 43 08.15 +35 21 36.0 – V 703
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)