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
2020-11-20 01:57:18 C 03 01 14.19 +31 04 49.9 – V W46
2020-11-20 02:28:35 C 03 01 11.84 +31 04 30.4 – V W46
2020-11-20 02:39:52 C 03 01 11.00 +31 04 23.4 – V W33
2020-11-20 02:46:05 C 03 01 10.52 +31 04 19.5 – V W33
2020-11-20 02:52:17 C 03 01 10.05 +31 04 15.7 – V W33
2020-11-20 03:01:35 C 03 01 09.33 +31 04 10.3 – V W46
2020-11-21 04:43:36 C 02 59 16.13 +30 48 04.6 – V 703
2020-11-21 04:51:07 C 02 59 15.60 +30 48 00.4 – V 703
2020-11-21 04:58:38 C 02 59 15.02 +30 47 55.5 – V 703
2020-11-21 05:06:09 C 02 59 14.50 +30 47 50.8 – V 703
2020-11-22 04:39:16 C 02 57 32.44 +30 32 54.9 – V G96
2020-11-22 04:46:41 C 02 57 31.88 +30 32 50.4 – V G96
2020-11-22 04:54:05 C 02 57 31.35 +30 32 45.7 – V G96
2020-11-22 05:01:30 C 02 57 30.79 +30 32 40.8 – V G96
2020-11-24 05:12:19 C 02 54 07.55 +30 01 41.1 – V 703
2020-11-24 05:19:50 C 02 54 06.98 +30 01 36.5 – V 703
2020-11-24 05:27:21 C 02 54 06.46 +30 01 31.1 – V 703
2020-12-02 10:15:26 C 02 41 47.65 +27 51 40.9 – V T08
2020-12-02 10:20:05 C 02 41 47.37 +27 51 37.7 – V T08
2020-12-02 10:31:22 C 02 41 46.73 +27 51 30.3 – V T08
2020-12-02 10:49:18 C 02 41 45.66 +27 51 17.9 – V T08
2020-12-03 10:25:32 C 02 40 28.437 +27 35 43.76 – U F52
2020-12-03 10:40:13 C 02 40 27.606 +27 35 33.86 – U F52
2020-12-03 10:54:52 C 02 40 26.801 +27 35 24.34 – U F52
2020-12-03 11:09:33 C 02 40 25.995 +27 35 14.44 – U F52
2020-12-04 05:06:15 C 02 39 29.39 +27 23 25.9 – V G96
2020-12-04 05:13:38 C 02 39 28.99 +27 23 21.2 – V G96
2020-12-04 05:21:02 C 02 39 28.59 +27 23 16.3 – V G96
2020-12-04 05:28:27 C 02 39 28.19 +27 23 11.3 – V G96
2020-12-04 11:02:12 C 02 39 10.52 +27 19 33.5 – V T05
2020-12-04 11:07:32 C 02 39 10.28 +27 19 30.0 – V T05
2020-12-04 11:22:04 C 02 39 09.50 +27 19 20.5 – V T05
2020-12-04 11:32:01 C 02 39 08.92 +27 19 13.4 – V T05
2020-12-05 06:04:50 C 02 38 12.51 +27 07 05.7 – V 703
2020-12-05 06:12:21 C 02 38 12.02 +27 06 59.9 – V 703
2020-12-05 06:19:52 C 02 38 11.74 +27 06 55.2 – V 703
2020-12-05 06:27:24 C 02 38 11.30 +27 06 50.0 – V 703
2020-12-06 08:23:05 C 02 36 54.96 +26 50 00.9 – V T08
2020-12-06 08:39:40 C 02 36 54.14 +26 49 50.0 – V T08
2020-12-06 08:44:29 C 02 36 53.89 +26 49 47.2 – V T08
2020-12-06 09:02:03 C 02 36 53.01 +26 49 35.8 – V T08
2020-12-07 05:33:53 C 02 35 55.255 +26 36 20.31 – U F51
2020-12-07 05:53:08 C 02 35 54.327 +26 36 08.04 – U F51
2020-12-07 06:12:38 C 02 35 53.384 +26 35 55.64 – U F51
2020-12-07 06:31:56 C 02 35 52.453 +26 35 43.33 – U F51
2020-12-08 07:57:11 C 02 34 43.18 +26 19 27.9 – V T05
2020-12-08 08:05:31 C 02 34 42.80 +26 19 22.3 – V T05
2020-12-08 08:10:14 C 02 34 42.56 +26 19 18.9 – V T05
2020-12-08 08:27:34 C 02 34 41.78 +26 19 08.2 – V T05
2020-12-09 08:59:22 C 02 33 37.87 +26 03 33.3 – o 691
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)