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
2001-12-27 06:26:26 C 11 48 33.35 -20 52 45.1 c 844
2001-12-27 06:29:09 C 11 48 33.62 -20 52 49.6 c 844
2001-12-27 06:37:44 C 11 48 34.84 -20 53 05.5 c 844
2002-01-05 11:53:09 C 12 23 11.84 -27 42 35.8 17.1 c 704
2002-01-05 12:16:13 C 12 23 15.82 -27 43 19.8 17.3 c 704
2002-01-05 12:39:20 C 12 23 19.74 -27 44 04.0 17.3 c 704
2002-07-18 08:43:16 C 01 45 37.45 +31 18 08.6 18.8 c 704
2002-07-18 09:01:39 C 01 45 38.52 +31 18 22.0 19.3 c 704
2002-07-18 09:38:01 C 01 45 40.43 +31 18 44.1 19.2 c 704
2002-07-18 09:56:13 C 01 45 41.43 +31 18 55.8 18.7 c 704
2002-08-01 07:32:11 C 02 01 15.03 +34 33 55.4 m 859
2002-08-01 07:48:30 C 02 01 15.82 +34 34 06.0 m 859
2002-08-28 08:27:41 C 02 10 21.72 +39 17 17.0 18.3 c 704
2002-08-28 08:47:06 C 02 10 21.42 +39 17 23.2 18.4 c 704
2002-08-28 09:06:27 C 02 10 21.11 +39 17 29.2 18.3 c 704
2002-09-08 00:16:38 C 02 03 41.22 +40 17 44.0 c 118
2002-09-08 00:22:03 C 02 03 41.01 +40 17 44.9 c 118
2002-09-08 00:25:23 C 02 03 40.85 +40 17 45.6 c 118
2002-09-18 09:50:13 C 01 50 57.91 +40 30 19.9 c 699
2002-09-18 10:09:20 C 01 50 56.67 +40 30 18.6 c 699
2002-09-18 10:28:29 C 01 50 55.43 +40 30 17.3 c 699
2002-09-18 10:47:39 C 01 50 54.20 +40 30 16.0 c 699
2002-09-25 09:36:56 C 01 39 28.42 +40 05 29.4 17.5 c 644
2002-09-25 09:40:16 C 01 39 28.17 +40 05 28.8 17.4 c 644
2002-09-25 09:52:01 C 01 39 27.27 +40 05 25.8 17.4 c 644
2002-09-25 09:55:29 C 01 39 27.00 +40 05 25.2 17.4 c 644
2002-09-25 10:07:12 C 01 39 26.10 +40 05 22.1 17.4 c 644
2002-09-25 10:10:32 C 01 39 25.84 +40 05 21.4 17.4 c 644
2002-09-29 19:46:45 C 01 31 20.39 +39 33 56.5 c 240
2002-09-29 19:47:49 C 01 31 20.28 +39 33 56.1 c 240
2002-09-29 20:00:22 C 01 31 19.29 +39 33 51.8 c 240
2002-10-06 03:32:03 C 01 19 03.56 +38 27 07.7 m 859
2002-10-06 03:38:12 C 01 19 03.02 +38 27 03.5 m 859
2002-10-06 03:43:16 C 01 19 02.73 +38 27 00.7 m 859
2002-10-06 09:15:33 C 01 18 35.48 +38 23 58.1 c 699
2002-10-06 09:39:34 C 01 18 33.39 +38 23 45.0 c 699
2002-10-06 10:03:29 C 01 18 31.40 +38 23 32.3 c 699
2002-10-06 10:27:33 C 01 18 29.39 +38 23 18.7 c 699
2002-10-11 09:32:26 C 01 08 50.09 +37 12 29.1 17.6 c 644
2002-10-11 09:48:58 C 01 08 48.73 +37 12 18.1 17.7 c 644
2002-10-11 10:04:03 C 01 08 47.49 +37 12 08.1 17.7 c 644
2002-10-12 22:29:16 C 01 05 54.77 +36 47 42.1 d 170
2002-10-12 22:31:24 C 01 05 54.60 +36 47 41.3 d 170
2002-10-12 22:36:50 C 01 05 54.26 +36 47 37.3 d 170
2002-10-13 00:06:19 C 01 05 47.05 +36 46 36.8 941
2002-10-13 00:08:39 C 01 05 46.90 +36 46 34.9 941
2002-10-13 00:10:59 C 01 05 46.68 +36 46 33.5 941
2002-10-13 00:16:43 C 01 05 46.22 +36 46 29.6 941
2002-10-13 00:19:03 C 01 05 46.08 +36 46 28.1 941
2002-10-13 00:21:23 C 01 05 45.82 +36 46 26.5 941
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)