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
2007-02-22 04:31:09 C 04 21 03.81 +13 49 28.2 r 703
2007-02-22 04:44:06 C 04 21 04.17 +13 49 27.3 r 703
2007-02-22 04:44:36 C 04 21 04.15 +13 49 26.9 o 704
2007-03-03 03:57:22 C 04 29 45.54 +13 38 07.3 o 644
2007-03-03 04:17:56 C 04 29 46.47 +13 38 06.6 o 644
2007-03-03 04:45:30 C 04 29 47.71 +13 38 05.5 o 644
2007-03-05 21:03:41 C 04 32 52.00 +13 35 57.9 r A13
2007-03-05 21:31:41 C 04 32 53.33 +13 35 57.4 r A13
2007-03-15 02:40:28 C 04 44 57.20 +13 31 40.9 18.6 c 704
2007-03-15 02:55:34 C 04 44 58.09 +13 31 40.5 18.9 c 704
2007-03-15 03:10:41 C 04 44 58.95 +13 31 40.1 19.0 c 704
2007-03-15 03:25:48 C 04 44 59.88 +13 31 40.6 19.1 c 704
2007-03-15 03:41:07 C 04 45 00.72 +13 31 40.2 19.3 c 704
2007-03-18 02:56:05 C 04 49 22.29 +13 30 51.5 20.0 c 704
2007-03-18 03:12:39 C 04 49 23.36 +13 30 51.5 19.9 c 704
2007-03-18 03:29:08 C 04 49 24.39 +13 30 49.8 20.5 c 704
2007-03-18 03:45:51 C 04 49 25.44 +13 30 51.0 19.9 c 704
2007-09-29 21:51:19 C 17 11 31.12 -06 09 10.0 r J46
2007-09-29 21:59:43 C 17 11 32.86 -06 09 09.2 r J46
2007-11-20 02:00:01 C 20 31 11.60 -01 41 22.5 r 703
2007-11-20 02:07:48 C 20 31 12.64 -01 41 18.6 r 703
2007-11-20 02:15:38 C 20 31 13.65 -01 41 15.9 r 703
2007-11-20 02:23:27 C 20 31 14.62 -01 41 13.1 r 703
2007-12-03 01:26:49 C 21 09 02.62 -00 04 57.7 19.1 c 704
2007-12-03 01:45:25 C 21 09 04.76 -00 04 52.3 19.7 c 704
2007-12-03 02:22:39 C 21 09 09.05 -00 04 39.9 19.9 c 704
2007-12-03 02:41:17 C 21 09 11.17 -00 04 34.1 19.2 c 704
2008-09-28 10:26:54 C 07 32 04.09 +21 30 28.8 19.6 c 704
2008-09-28 10:44:45 C 07 32 05.25 +21 30 22.0 19.8 c 704
2008-09-28 11:02:24 C 07 32 06.51 +21 30 15.3 19.7 c 704
2008-10-24 11:21:38 C 08 12 15.87 +17 07 32.8 r 703
2008-10-24 11:33:52 C 08 12 16.59 +17 07 27.0 r 703
2008-10-24 11:46:06 C 08 12 17.24 +17 07 20.3 r 703
2008-10-24 11:58:29 C 08 12 17.96 +17 07 14.0 r 703
2008-10-27 10:48:25 C 08 16 21.48 +16 31 29.5 19.6 c 704
2008-10-27 11:05:09 C 08 16 22.38 +16 31 21.3 19.6 c 704
2008-10-27 11:21:53 C 08 16 23.25 +16 31 12.4 19.6 c 704
2008-10-31 09:00:31 C 08 21 33.63 +15 41 52.9 18.7 c 704
2008-10-31 09:34:08 C 08 21 35.42 +15 41 36.3 19.0 c 704
2008-10-31 09:51:00 C 08 21 36.46 +15 41 27.1 19.8 c 704
2008-10-31 10:09:05 C 08 21 37.27 +15 41 16.8 19.2 c 704
2008-11-07 11:31:49 C 08 30 20.88 +14 05 42.7 r 703
2008-11-07 11:48:46 C 08 30 21.81 +14 05 31.2 r 703
2008-11-07 12:05:53 C 08 30 22.57 +14 05 22.1 r 703
2008-11-07 12:22:59 C 08 30 23.43 +14 05 11.6 r 703
2008-11-10 00:30:54 C 08 33 17.29 +13 29 07.5 r B67
2008-11-10 00:39:11 C 08 33 17.68 +13 29 02.7 r B67
2008-11-10 00:47:21 C 08 33 18.01 +13 28 58.0 r B67
2008-11-16 03:42:26 C 08 39 51.58 +11 55 53.5 c B37
2008-11-16 03:47:22 C 08 39 51.79 +11 55 52.0 c B37
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)