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
2020-10-28 06:42:46 C 03 43 07.50 +35 21 34.6 V 703
2020-10-29 07:33:10 C 03 41 22.83 +35 14 15.2 V 703
2020-10-29 07:40:23 C 03 41 22.25 +35 14 13.5 V 703
2020-10-29 07:47:35 C 03 41 21.79 +35 14 11.4 V 703
2020-10-29 07:54:48 C 03 41 21.19 +35 14 09.0 V 703
2020-11-04 12:05:33 C 03 30 20.36 +34 21 24.4 V T08
2020-11-04 12:21:06 C 03 30 19.10 +34 21 18.5 V T08
2020-11-04 13:02:07 C 03 30 15.86 +34 21 01.1 V T08
2020-11-04 13:07:19 C 03 30 15.41 +34 20 59.0 V T08
2020-11-08 00:39:10 C 03 23 44.36 +33 44 20.9 V 130
2020-11-08 00:41:20 C 03 23 44.18 +33 44 19.8 V 130
2020-11-08 17:47:19 C 03 22 23.16 +33 36 17.1 q D29
2020-11-08 18:12:47 C 03 22 21.09 +33 36 04.6 q D29
2020-11-08 18:38:13 C 03 22 19.03 +33 35 52.5 q D29
2020-11-10 08:08:02 C 03 19 21.16 +33 17 29.4 V 703
2020-11-10 08:15:34 C 03 19 20.59 +33 17 26.7 V 703
2020-11-10 08:23:06 C 03 19 20.02 +33 17 22.0 V 703
2020-11-10 08:30:39 C 03 19 19.38 +33 17 17.9 V 703
2020-11-10 12:27:07 C 03 19 00.50 +33 15 19.9 V T05
2020-11-10 12:32:23 C 03 19 00.09 +33 15 17.2 V T05
2020-11-10 12:46:44 C 03 18 58.92 +33 15 10.0 V T05
2020-11-10 12:57:41 C 03 18 58.04 +33 15 04.2 V T05
2020-11-10 17:36:16 C 03 18 36.13 +33 12 41.8 q D29
2020-11-10 17:54:06 C 03 18 34.67 +33 12 32.8 q D29
2020-11-10 18:11:55 C 03 18 33.23 +33 12 23.5 q D29
2020-11-11 11:51:40 C 03 17 09.366 +33 03 20.40 U F51
2020-11-11 12:09:06 C 03 17 07.947 +33 03 11.26 U F51
2020-11-11 12:26:32 C 03 17 06.525 +33 03 02.00 U F51
2020-11-12 05:33:28 C 03 15 45.84 +32 54 01.9 V 703
2020-11-12 05:41:57 C 03 15 45.10 +32 53 57.0 V 703
2020-11-12 05:50:26 C 03 15 44.46 +32 53 52.5 V 703
2020-11-12 05:58:54 C 03 15 43.74 +32 53 48.2 V 703
2020-11-13 06:09:23 C 03 13 49.24 +32 40 48.3 V G96
2020-11-13 06:16:52 C 03 13 48.63 +32 40 44.3 V G96
2020-11-13 06:24:21 C 03 13 48.03 +32 40 40.2 V G96
2020-11-14 01:54:58 C 03 12 16.24 +32 29 54.8 V W33
2020-11-14 02:01:18 C 03 12 15.73 +32 29 51.5 V W33
2020-11-14 02:07:37 C 03 12 15.20 +32 29 47.9 V W33
2020-11-15 05:16:42 C 03 10 07.65 +32 14 31.1 V 703
2020-11-15 05:24:12 C 03 10 07.08 +32 14 27.1 V 703
2020-11-15 05:31:41 C 03 10 06.49 +32 14 22.8 V 703
2020-11-15 05:39:10 C 03 10 05.82 +32 14 19.1 V 703
2020-11-16 08:06:27 C 03 08 02.715 +31 59 04.27 U F51
2020-11-16 08:24:50 C 03 08 01.253 +31 58 53.65 U F51
2020-11-16 08:43:11 C 03 07 59.793 +31 58 43.05 U F51
2020-11-16 09:01:34 C 03 07 58.332 +31 58 32.41 U F51
2020-11-18 05:07:55 C 03 04 35.78 +31 32 18.5 V 703
2020-11-18 05:15:32 C 03 04 35.14 +31 32 13.5 V 703
2020-11-18 05:23:10 C 03 04 34.56 +31 32 09.0 V 703
2020-11-18 05:30:47 C 03 04 33.99 +31 32 04.3 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)