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
2025-12-11 07:20:14 C 23 27 24.653 +14 06 07.02 V T05
2025-12-14 06:16:21 C 23 31 25.680 +13 55 49.22 V T05
2025-12-14 06:21:03 C 23 31 25.963 +13 55 48.22 V T05
2025-12-14 06:30:25 C 23 31 26.486 +13 55 47.64 V T05
2025-12-14 07:01:34 C 23 31 28.198 +13 55 43.93 V T05
2025-12-16 02:17:19 C 23 33 57.949 +13 50 32.42 V 703
2025-12-16 02:20:35 C 23 33 58.219 +13 50 31.63 V 703
2025-12-16 02:23:51 C 23 33 58.424 +13 50 29.04 V 703
2025-12-16 02:27:08 C 23 33 58.651 +13 50 29.08 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)