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
2006-12-29 04:59:50 C 04 42 31.21 +20 10 38.1 17.9 c 704
2006-12-29 05:17:13 C 04 42 29.92 +20 10 29.8 18.0 c 704
2006-12-29 05:34:29 C 04 42 28.60 +20 10 21.2 17.7 c 704
2006-12-29 05:51:44 C 04 42 27.37 +20 10 12.7 18.2 c 704
2007-01-08 04:00:45 C 04 27 24.29 +18 14 40.7 o 699
2007-01-08 04:34:58 C 04 27 22.41 +18 14 25.3 o 699
2007-01-08 05:09:13 C 04 27 20.49 +18 14 09.6 o 699
2007-01-09 05:24:52 C 04 26 04.88 +18 03 17.1 r 703
2007-01-09 05:34:27 C 04 26 04.38 +18 03 12.7 r 703
2007-01-09 05:44:02 C 04 26 03.87 +18 03 08.6 r 703
2007-01-12 20:10:48 C 04 22 01.36 +17 26 02.7 18.0 r 084
2007-01-12 20:14:58 C 04 22 01.12 +17 26 00.8 17.7 r 084
2007-01-14 04:55:46 C 04 20 40.25 +17 12 49.3 17.7 c 704
2007-01-14 05:14:02 C 04 20 39.51 +17 12 42.2 18.0 c 704
2007-01-14 05:32:36 C 04 20 38.76 +17 12 34.9 18.1 c 704
2007-01-14 05:50:59 C 04 20 37.97 +17 12 27.1 18.1 c 704
2007-01-14 06:09:22 C 04 20 37.20 +17 12 19.8 17.8 c 704
2007-01-16 23:00:22 C 04 18 15.23 +16 47 15.6 17.8 r 084
2007-01-17 03:37:21 C 04 18 06.39 +16 45 37.1 o 644
2007-01-17 04:07:16 C 04 18 05.33 +16 45 26.2 o 644
2007-01-17 04:37:19 C 04 18 04.28 +16 45 15.2 o 644
2007-01-18 23:32:24 C 04 16 44.52 +16 29 42.3 r 084
2007-01-18 23:36:34 C 04 16 44.39 +16 29 40.1 18.5 r 084
2007-01-20 19:34:32 C 04 15 33.89 +16 14 38.5 18.4 r 084
2007-01-20 19:38:41 C 04 15 33.78 +16 14 37.3 18.4 r 084
2007-01-24 03:46:24 C 04 13 52.68 +15 49 23.3 r 703
2007-01-24 03:57:21 C 04 13 52.46 +15 49 20.1 r 703
2007-01-24 04:08:17 C 04 13 52.28 +15 49 16.7 r 703
2007-01-24 04:19:16 C 04 13 52.03 +15 49 13.1 r 703
2007-02-13 03:34:01 C 04 15 04.49 +14 10 26.6 o 704
2007-02-13 03:51:20 C 04 15 04.79 +14 10 24.2 o 704
2007-02-13 04:08:34 C 04 15 05.05 +14 10 22.3 o 704
2007-02-13 04:25:39 C 04 15 05.47 +14 10 19.2 o 704
2007-02-13 04:43:10 C 04 15 05.80 +14 10 18.2 o 704
2007-02-16 02:36:55 C 04 16 42.37 +14 02 16.3 o 644
2007-02-16 03:06:52 C 04 16 43.08 +14 02 13.2 o 644
2007-02-16 03:36:58 C 04 16 43.79 +14 02 10.2 o 644
2007-02-18 01:52:05 C 04 17 58.31 +13 57 34.9 c 711
2007-02-18 02:00:29 C 04 17 58.55 +13 57 33.9 c 711
2007-02-18 02:08:52 C 04 17 58.76 +13 57 33.3 c 711
2007-02-18 03:05:08 C 04 18 00.30 +13 57 27.7 o 699
2007-02-18 03:39:21 C 04 18 01.27 +13 57 24.0 o 699
2007-02-18 04:13:35 C 04 18 02.17 +13 57 21.6 o 699
2007-02-18 04:47:49 C 04 18 03.13 +13 57 17.6 o 699
2007-02-22 03:38:38 C 04 21 01.91 +13 49 31.0 o 704
2007-02-22 03:55:01 C 04 21 02.55 +13 49 29.8 o 704
2007-02-22 04:05:15 C 04 21 02.91 +13 49 29.8 r 703
2007-02-22 04:11:28 C 04 21 03.16 +13 49 29.1 o 704
2007-02-22 04:18:12 C 04 21 03.34 +13 49 29.5 r 703
2007-02-22 04:28:00 C 04 21 03.59 +13 49 26.8 o 704
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)