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
2009-08-12 22:56:02 C 00 35 41.40 +42 55 42.6 c J05
2009-08-12 23:01:04 C 00 35 41.12 +42 55 44.4 c J05
2009-08-13 22:32:29 C 00 34 19.85 +43 04 03.1 17.4 r C20
2009-08-13 23:02:24 C 00 34 17.99 +43 04 13.5 17.3 r C20
2009-08-14 00:25:10 C 00 34 12.81 +43 04 41.7 17.3 r C20
2009-08-14 00:28:49 C 00 34 12.58 +43 04 42.9 17.2 r C20
2009-08-14 22:24:33 C 00 32 54.25 +43 11 47.2 17.6 r C20
2009-08-14 22:59:32 C 00 32 52.41 +43 11 56.5 w 160
2009-08-14 23:02:00 C 00 32 52.24 +43 11 57.3 w 160
2009-08-14 23:04:28 C 00 32 52.09 +43 11 58.1 w 160
2009-08-14 23:15:30 C 00 32 50.93 +43 12 03.5 17.2 r C20
2009-08-15 02:30:52 C 00 32 38.87 +43 13 04.3 w B19
2009-08-15 02:35:07 C 00 32 38.57 +43 13 05.6 w B19
2009-08-15 02:39:24 C 00 32 38.28 +43 13 07.1 w B19
2009-08-15 22:24:08 C 00 31 24.46 +43 18 52.6 17.4 r C20
2009-08-15 22:27:23 C 00 31 24.23 +43 18 53.6 17.4 r C20
2009-08-18 00:58:14 C 00 28 02.65 +43 31 29.4 17.5 o C20
2009-08-18 01:17:24 C 00 28 01.27 +43 31 33.5 17.7 o C20
2009-08-18 23:34:06 C 00 26 28.47 +43 36 02.6 w 160
2009-08-18 23:36:26 C 00 26 28.30 +43 36 03.1 w 160
2009-08-18 23:38:45 C 00 26 28.13 +43 36 03.6 w 160
2009-08-19 20:40:31 C 00 24 57.04 +43 39 36.8 16.9 o 084
2009-08-19 20:43:54 C 00 24 56.81 +43 39 37.3 17.3 r 084
2009-08-19 23:33:06 C 00 24 44.01 +43 40 05.9 17.5 r 084
2009-08-21 23:18:21 C 00 21 07.46 +43 45 53.8 o J16
2009-08-21 23:28:40 C 00 21 06.69 +43 45 54.6 o J16
2009-08-21 23:39:02 C 00 21 05.85 +43 45 56.0 o J16
2009-08-22 19:38:02 C 00 19 31.57 +43 47 21.2 r C00
2009-08-22 20:09:30 C 00 19 29.04 +43 47 24.1 r C00
2009-08-22 20:41:21 C 00 19 26.48 +43 47 25.4 r C00
2009-08-23 21:03:54 C 00 17 28.40 +43 48 28.1 17.7 o C20
2009-08-23 21:07:36 C 00 17 28.07 +43 48 28.1 17.6 o C20
2009-08-24 00:35:46 C 00 17 10.25 +43 48 32.8 17.5 o C20
2009-08-24 00:42:22 C 00 17 09.69 +43 48 32.8 17.7 o C20
2009-08-24 22:45:51 C 00 15 20.62 +43 48 32.7 17.3 o C20
2009-08-24 22:53:48 C 00 15 19.92 +43 48 32.6 17.2 o C20
2009-08-25 20:10:43 C 00 13 32.81 +43 47 48.4 17.5 o C20
2009-08-25 20:13:28 C 00 13 32.55 +43 47 48.3 17.5 o C20
2009-08-28 20:29:24 C 00 07 14.01 +43 40 13.8 17.1 o C20
2009-08-28 20:36:26 C 00 07 13.35 +43 40 12.7 17.1 o C20
2009-08-29 19:48:05 C 00 05 08.47 +43 36 01.9 17.1 o C20
2009-08-29 19:48:41 C 00 05 08.41 +43 36 01.8 17.0 o C20
2009-08-29 23:07:10 C 00 04 49.74 +43 35 23.8 17.2 o C20
2009-08-30 18:17:37 C 00 03 06.09 +43 31 08.6 17.1 o C20
2009-08-30 22:38:26 C 00 02 41.45 +43 30 10.7 17.0 o C20
2009-08-31 21:12:00 C 00 00 37.88 +43 24 16.7 c 127
2009-08-31 21:37:22 C 00 00 35.50 +43 24 10.1 c 127
2009-08-31 21:44:05 C 00 00 34.87 +43 24 08.9 c 127
2009-09-03 23:01:09 C 23 53 46.20 +42 59 36.6 r J51
2009-09-03 23:08:43 C 23 53 45.47 +42 59 33.6 r J51
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)