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
2008-11-16 04:33:14 C 08 39 53.59 +11 55 22.2 c B37
2008-11-16 04:36:26 C 08 39 53.74 +11 55 20.4 c B37
2008-11-22 10:32:44 C 08 45 45.86 +10 12 19.9 r 703
2008-11-22 10:43:22 C 08 45 46.18 +10 12 13.0 r 703
2008-11-22 10:53:46 C 08 45 46.54 +10 12 04.7 r 703
2008-11-22 11:04:15 C 08 45 46.94 +10 11 57.3 r 703
2008-12-01 09:25:55 C 08 52 25.24 +07 28 42.3 r 703
2008-12-01 09:39:03 C 08 52 25.57 +07 28 31.8 r 703
2008-12-01 09:52:07 C 08 52 25.86 +07 28 21.3 r 703
2008-12-01 10:05:19 C 08 52 26.14 +07 28 10.7 r 703
2008-12-04 09:08:00 C 08 54 06.56 +06 29 24.2 18.9 c 704
2008-12-04 09:24:44 C 08 54 06.88 +06 29 10.3 18.8 c 704
2008-12-04 09:41:43 C 08 54 07.24 +06 28 55.7 19.0 c 704
2008-12-04 10:15:16 C 08 54 07.80 +06 28 27.4 18.4 c 704
2008-12-11 22:53:25 C 08 57 00.02 +03 46 56.1 18.2 r C20
2008-12-13 23:51:50 C 08 57 23.99 +02 59 55.8 17.5 o C20
2008-12-13 23:55:58 C 08 57 24.02 +02 59 52.0 17.5 o C20
2008-12-14 23:58:40 C 08 57 31.97 +02 36 14.5 17.5 o C20
2008-12-15 00:02:47 C 08 57 31.98 +02 36 10.5 17.5 o C20
2008-12-19 00:58:43 C 08 57 36.32 +00 57 12.2 17.0 r C20
2008-12-19 01:02:50 C 08 57 36.30 +00 57 07.7 17.0 r C20
2008-12-20 01:30:26 C 08 57 29.95 +00 31 10.6 16.9 r C20
2008-12-21 00:54:32 C 08 57 21.12 +00 05 58.4 16.6 o C20
2008-12-29 08:25:18 C 08 53 57.84 -03 44 28.4 r 703
2008-12-29 08:35:44 C 08 53 57.55 -03 44 41.6 r 703
2008-12-29 08:46:08 C 08 53 57.26 -03 44 54.6 r 703
2008-12-29 08:56:27 C 08 53 56.94 -03 45 07.1 r 703
2009-01-22 06:17:20 C 08 17 37.23 -17 09 28.8 c 808
2009-01-22 06:26:09 C 08 17 36.25 -17 09 42.4 c 808
2009-01-22 06:35:00 C 08 17 35.33 -17 09 55.3 c 808
2009-01-24 22:24:52 C 08 10 44.72 -18 45 59.1 15.6 r C20
2009-01-24 22:33:10 C 08 10 43.77 -18 46 11.3 15.6 r C20
2009-01-25 05:15:59 C 08 09 58.71 -18 55 51.5 c 808
2009-01-25 05:23:00 C 08 09 57.91 -18 56 01.5 c 808
2009-01-25 05:30:00 C 08 09 57.09 -18 56 12.0 c 808
2009-01-28 22:11:13 C 07 59 28.09 -21 07 00.0 15.6 r C20
2009-01-28 22:15:19 C 07 59 27.56 -21 07 06.0 15.6 r C20
2009-01-29 02:59:29 C 07 58 53.01 -21 13 36.2 r 808
2009-01-29 03:09:30 C 07 58 51.73 -21 13 50.7 r 808
2009-01-29 03:20:30 C 07 58 50.35 -21 14 06.1 r 808
2009-02-01 03:53:00 C 07 49 31.89 -22 56 58.9 r 808
2009-02-01 04:02:59 C 07 49 30.48 -22 57 13.3 r 808
2009-02-01 04:15:19 C 07 49 28.82 -22 57 29.9 r 808
2009-02-02 03:00:00 C 07 46 27.45 -23 28 51.8 r 808
2009-02-02 03:09:59 C 07 46 26.03 -23 29 05.3 r 808
2009-02-02 03:20:59 C 07 46 24.54 -23 29 19.9 r 808
2009-02-03 03:11:50 C 07 43 10.85 -24 01 41.8 r 808
2009-02-03 03:21:49 C 07 43 09.50 -24 01 54.1 r 808
2009-02-03 03:31:30 C 07 43 08.00 -24 02 07.8 r 808
2009-02-03 20:59:40 C 07 40 44.02 -24 25 49.3 15.3 r C20
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)