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
2009-09-03 23:16:17 C 23 53 44.75 +42 59 30.6 r J51
2009-09-06 22:36:17 C 23 47 03.77 +42 27 18.5 o B88
2009-09-06 22:40:27 C 23 47 03.37 +42 27 16.5 o B88
2009-09-06 22:44:36 C 23 47 02.95 +42 27 14.5 o B88
2009-09-06 22:48:44 C 23 47 02.61 +42 27 12.7 o B88
2009-09-07 00:19:37 C 23 46 53.31 +42 26 26.0 17.2 o C20
2009-09-07 00:27:35 C 23 46 52.55 +42 26 21.7 16.8 o C20
2009-09-07 21:31:30 C 23 44 55.45 +42 15 14.4 17.5 r 084
2009-09-08 19:22:16 C 23 42 54.47 +42 03 01.3 c A65
2009-09-08 19:47:15 C 23 42 52.14 +42 02 47.5 c A65
2009-09-08 20:01:39 C 23 42 50.78 +42 02 39.5 c A65
2009-09-08 20:53:45 C 23 42 45.66 +42 02 10.2 r C01
2009-09-08 20:56:07 C 23 42 45.43 +42 02 08.8 r C01
2009-09-08 21:22:15 C 23 42 43.27 +42 01 55.2 w J28
2009-09-08 21:30:36 C 23 42 42.46 +42 01 50.8 w J28
2009-09-08 22:00:23 C 23 42 39.30 +42 01 32.5 r C01
2009-09-08 22:02:46 C 23 42 39.07 +42 01 31.1 r C01
2009-09-09 20:31:16 C 23 40 35.01 +41 48 05.9 r C01
2009-09-09 20:33:38 C 23 40 34.78 +41 48 04.5 r C01
2009-09-09 21:05:57 C 23 40 31.52 +41 47 43.9 17.7 r 084
2009-09-09 21:09:12 C 23 40 31.17 +41 47 42.0 17.2 r 084
2009-09-09 21:21:04 C 23 40 30.30 +41 47 36.1 r C01
2009-09-09 21:23:26 C 23 40 30.07 +41 47 34.6 r C01
2009-09-10 00:43:20 C 23 40 10.99 +41 45 30.2 17.2 r 084
2009-09-10 22:06:03 C 23 38 14.16 +41 31 55.2 17.5 r 084
2009-09-11 01:30:47 C 23 37 55.13 +41 29 40.1 16.9 o 084
2009-09-11 01:34:07 C 23 37 54.78 +41 29 38.5 17.1 o 084
2009-09-11 19:40:33 C 23 36 17.73 +41 17 34.1 w 160
2009-09-11 19:41:26 C 23 36 17.64 +41 17 33.7 w 160
2009-09-12 00:32:39 C 23 35 50.11 +41 14 14.9 16.9 o C20
2009-09-12 00:40:43 C 23 35 49.37 +41 14 09.2 17.0 o C20
2009-09-12 22:19:01 C 23 33 53.82 +40 58 57.3 17.0 o C20
2009-09-12 22:33:27 C 23 33 52.51 +40 58 47.0 17.1 o C20
2009-09-15 06:52:11 C 23 28 58.26 +40 16 11.1 r 703
2009-09-15 06:58:26 C 23 28 57.72 +40 16 06.2 r 703
2009-09-15 07:04:39 C 23 28 57.14 +40 16 01.3 r 703
2009-09-15 07:11:16 C 23 28 56.53 +40 15 56.1 r 703
2009-09-17 19:16:04 C 23 23 56.30 +39 25 52.3 18.5 r 084
2009-09-17 20:28:05 C 23 23 50.56 +39 24 51.3 c 127
2009-09-17 20:42:20 C 23 23 49.37 +39 24 39.1 c 127
2009-09-17 20:52:53 C 23 23 48.48 +39 24 30.0 c 127
2009-09-17 21:59:27 C 23 23 42.47 +39 23 34.2 16.8 o C20
2009-09-17 22:04:59 C 23 23 42.01 +39 23 29.3 16.8 o C20
2009-09-17 22:05:36 C 23 23 41.96 +39 23 28.8 16.8 o C20
2009-09-17 22:07:26 C 23 23 41.80 +39 23 27.3 16.7 o C20
2009-09-18 19:56:15 C 23 21 57.42 +39 04 12.5 17.3 o C20
2009-09-18 20:04:15 C 23 21 56.78 +39 04 05.4 17.1 o C20
2009-09-19 18:36:36 C 23 20 11.24 +38 43 39.2 17.4 o C20
2009-09-19 18:40:20 C 23 20 10.96 +38 43 35.3 17.5 o C20
2009-09-20 23:55:25 C 23 17 56.98 +38 16 15.0 17.6 o 084
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)