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
2018-10-01 11:38:07 C 01 23 15.90 +39 16 40.4 U T05
2018-10-01 11:59:02 C 01 23 14.13 +39 16 31.4 U T05
2018-10-03 12:10:39 C 01 19 18.764 +38 54 44.81 U F52
2018-10-03 12:28:25 C 01 19 17.262 +38 54 36.21 U F52
2018-10-03 12:46:10 C 01 19 15.760 +38 54 27.48 U F52
2018-10-03 13:04:03 C 01 19 14.250 +38 54 18.71 U F52
2018-10-05 11:08:13 C 01 15 28.25 +38 31 02.2 U T05
2018-10-05 11:19:14 C 01 15 27.30 +38 30 56.3 U T05
2018-10-05 11:37:56 C 01 15 25.73 +38 30 46.2 U T05
2018-10-05 11:44:44 C 01 15 25.12 +38 30 42.4 U T05
2018-10-07 06:42:35 C 01 11 54.43 +38 06 50.9 V 703
2018-10-07 06:50:08 C 01 11 53.80 +38 06 46.3 V 703
2018-10-07 06:57:44 C 01 11 53.15 +38 06 42.0 V 703
2018-10-07 07:05:25 C 01 11 52.48 +38 06 37.5 V 703
2018-10-10 11:41:21 C 01 05 39.84 +37 19 22.6 U T08
2018-10-10 11:56:39 C 01 05 38.58 +37 19 12.8 U T08
2018-10-10 12:20:47 C 01 05 36.56 +37 18 56.8 U T08
2018-10-10 12:24:08 C 01 05 36.29 +37 18 54.2 U T08
2018-10-13 22:33:49 C 00 59 09.17 +36 21 52.8 q 160
2018-10-13 22:37:07 C 00 59 08.74 +36 21 51.3 q 160
2018-10-13 22:40:25 C 00 59 08.54 +36 21 50.1 q 160
2018-10-16 11:00:10 C 00 54 35.32 +35 36 30.7 U T05
2018-10-16 11:27:29 C 00 54 33.24 +35 36 09.4 U T05
2018-10-16 11:30:59 C 00 54 32.97 +35 36 06.3 U T05
2018-10-17 15:54:27 C 00 52 29.15 +35 13 46.2 o C94
2018-10-17 15:56:15 C 00 52 29.05 +35 13 44.7 o C94
2018-10-17 15:58:01 C 00 52 28.97 +35 13 43.2 o C94
2018-10-18 10:59:31 C 00 51 07.05 +34 58 34.9 U T08
2018-10-18 11:23:02 C 00 51 05.32 +34 58 15.9 U T08
2018-10-18 11:26:23 C 00 51 05.06 +34 58 13.3 U T08
2018-10-18 11:48:21 C 00 51 03.46 +34 57 55.3 U T08
2018-10-19 05:10:14 C 00 49 50.93 +34 43 48.8 V 703
2018-10-19 05:23:08 C 00 49 50.01 +34 43 38.1 V 703
2018-10-19 05:30:44 C 00 49 49.41 +34 43 32.0 V 703
2018-10-19 05:38:21 C 00 49 48.92 +34 43 26.3 V 703
2018-10-20 22:06:54 C 00 47 03.25 +34 09 55.5 q 160
2018-10-20 22:10:06 C 00 47 02.97 +34 09 53.2 q 160
2018-10-20 22:13:14 C 00 47 02.78 +34 09 50.5 q 160
2018-10-21 04:42:38 C 00 46 37.14 +34 04 25.4 V G96
2018-10-21 04:50:03 C 00 46 36.63 +34 04 19.1 V G96
2018-10-21 04:59:46 C 00 46 35.96 +34 04 11.1 V G96
2018-10-21 05:07:12 C 00 46 35.45 +34 04 04.9 V G96
2018-10-22 21:36:05 C 00 43 58.21 +33 29 40.8 V C95
2018-10-22 21:39:29 C 00 43 58.02 +33 29 37.3 V C95
2018-10-22 21:42:52 C 00 43 57.78 +33 29 35.1 V C95
2018-10-26 09:57:42 C 00 38 55.28 +32 16 19.8 U T08
2018-10-26 10:12:00 C 00 38 54.42 +32 16 06.1 U T08
2018-10-26 10:26:57 C 00 38 53.58 +32 15 53.5 U T08
2018-10-26 10:42:05 C 00 38 52.72 +32 15 40.3 U T08
2018-10-28 04:52:26 C 00 36 35.24 +31 38 20.7 V 703
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)