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
2004-11-04 06:44:04 C 03 34 24.42 +34 22 19.6 19.0 c 704
2004-11-04 07:01:17 C 03 34 23.02 +34 22 13.6 18.8 c 704
2004-11-04 07:18:28 C 03 34 21.67 +34 22 06.5 19.1 c 704
2004-11-16 21:25:25 C 03 10 38.47 +31 53 04.1 r A16
2004-11-16 21:29:26 C 03 10 38.12 +31 53 03.0 r A16
2004-11-16 21:29:33 C 03 10 38.09 +31 53 03.1 r A16
2004-11-16 21:33:18 C 03 10 37.81 +31 53 00.8 r A16
2004-11-16 21:41:27 C 03 10 37.17 +31 52 56.2 r A16
2004-11-16 21:53:59 C 03 10 36.17 +31 52 48.2 r A16
2004-11-19 06:11:09 C 03 06 17.88 +31 19 28.1 18.5 c 704
2004-11-19 07:09:33 C 03 06 13.37 +31 18 51.7 18.6 c 704
2004-11-19 07:29:26 C 03 06 11.74 +31 18 38.3 18.7 c 704
2004-11-21 19:39:36 C 03 01 44.25 +30 41 31.0 18.5 r 130
2004-11-21 19:46:17 C 03 01 43.70 +30 41 27.9 18.6 r 130
2004-11-21 19:52:18 C 03 01 43.33 +30 41 23.5 18.4 r 130
2004-11-21 19:58:30 C 03 01 42.83 +30 41 20.5 18.7 r 130
2004-11-21 22:05:17 C 03 01 33.28 +30 39 58.6 o 084
2004-11-22 21:18:43 C 02 59 52.75 +30 25 19.9 o 084
2004-11-28 05:57:33 C 02 51 08.28 +29 02 01.1 r H41
2004-11-28 05:59:39 C 02 51 08.16 +29 01 59.7 r H41
2004-11-28 06:01:46 C 02 51 08.05 +29 01 58.4 r H41
2004-11-28 06:03:49 C 02 51 07.87 +29 01 57.8 r H41
2004-12-02 04:55:05 C 02 45 23.14 +27 59 27.2 17.6 c 704
2004-12-02 05:15:13 C 02 45 21.95 +27 59 14.2 18.1 c 704
2004-12-02 05:38:46 C 02 45 20.55 +27 58 58.3 18.3 c 704
2004-12-02 05:57:52 C 02 45 19.41 +27 58 45.9 18.0 c 704
2004-12-02 06:17:11 C 02 45 18.26 +27 58 33.5 18.0 c 704
2004-12-04 05:55:44 C 02 42 40.15 +27 27 15.0 r H41
2004-12-04 05:58:13 C 02 42 40.07 +27 27 14.5 r H41
2004-12-04 06:00:44 C 02 42 39.93 +27 27 11.8 r H41
2004-12-11 06:16:33 C 02 34 49.03 +25 39 51.0 d 703
2004-12-11 06:31:20 C 02 34 48.28 +25 39 40.0 d 703
2004-12-11 06:46:05 C 02 34 47.69 +25 39 31.1 d 703
2004-12-11 07:00:57 C 02 34 47.07 +25 39 21.7 d 703
2005-01-07 03:26:40 C 02 25 45.15 +20 32 06.9 18.9 c 704
2005-01-07 03:45:37 C 02 25 45.29 +20 32 00.2 19.6 c 704
2005-01-07 04:04:27 C 02 25 45.44 +20 31 54.4 19.5 c 704
2005-01-07 04:23:13 C 02 25 45.58 +20 31 48.2 19.2 c 704
2005-01-07 04:42:41 C 02 25 45.73 +20 31 42.0 19.5 c 704
2005-01-12 05:00:04 C 02 27 18.43 +19 56 25.8 19.0 c 704
2005-01-12 05:21:17 C 02 27 18.72 +19 56 19.5 19.4 c 704
2005-01-12 05:42:18 C 02 27 19.10 +19 56 14.4 19.5 c 704
2005-01-12 06:03:19 C 02 27 19.34 +19 56 08.4 19.6 c 704
2005-01-12 06:24:07 C 02 27 19.75 +19 56 02.7 19.3 c 704
2005-03-12 02:33:05 C 03 31 44.76 +18 40 12.4 r G96
2005-03-12 02:41:02 C 03 31 45.30 +18 40 13.1 r G96
2005-03-12 02:49:00 C 03 31 45.84 +18 40 13.7 r G96
2005-03-12 02:56:59 C 03 31 46.34 +18 40 13.7 r G96
2006-11-18 09:26:49 C 05 57 32.63 +27 02 46.1 c 691
2006-11-18 09:52:01 C 05 57 31.27 +27 02 39.7 c 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)