17188 (1999 WC2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6366567525 ± 6.91e-09
Semi-major axis (a)2.2163129395 AU ± 1.25e-09
Inclination (i)29.45376125° ± 3.51e-06
Long. of Asc. Node (Ω)269.75984206° ± 2.40e-06
Arg. of Perihelion (ω)287.22265467° ± 2.83e-06
Mean Anomaly (M)292.03560408° ± 1.15e-06
Mean Motion (n)0.2987209303°/day ± 2.53e-10
Perihelion dist (q)0.80528234 AU ± 1.53e-08
Aphelion dist (Q)3.62734354 AU ± 1.54e-08
Orbital Period3.29948853 yr ± 2.79e-09
Physical Parameters
H (abs. magnitude)16.42
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.237″
Uncertainty0
Orbit TypeApollo
MOID0.063429 AU
Observations Used717
Radar Obs Used1
Oppositions16
Arc Total1990-2026
First Observation Used1990-07-27
Last Observation Used2026-01-07
Observations (806)
Date Type RA Dec Mag Band Observatory
2023-07-04 05:37:12 C 21 17 25.363 +19 38 28.18 V W68
2023-07-04 05:42:28 C 21 17 24.946 +19 38 32.82 V W68
2023-07-04 06:05:58 C 21 17 22.678 +19 38 49.45 V W68
2023-07-04 06:13:09 C 21 17 21.946 +19 38 55.61 V W68
2023-07-06 11:45:14 C 21 12 21.007 +20 17 11.94 V T05
2023-07-06 11:49:26 C 21 12 20.609 +20 17 14.75 V T05
2023-07-06 11:53:21 C 21 12 20.232 +20 17 17.74 V T05
2023-07-06 12:19:35 C 21 12 17.688 +20 17 35.38 V T05
2023-07-08 10:56:44 C 21 07 51.144 +20 47 35.30 V T05
2023-07-08 11:01:03 C 21 07 50.714 +20 47 38.26 V T05
2023-07-08 11:25:25 C 21 07 48.314 +20 47 52.62 V T05
2023-07-08 11:32:41 C 21 07 47.602 +20 47 57.26 V T05
2023-07-12 12:48:23 C 20 58 22.039 +21 40 00.95 V T05
2023-07-12 12:52:56 C 20 58 21.542 +21 40 03.72 V T05
2023-07-12 13:00:58 C 20 58 20.755 +21 40 06.85 V T05
2023-07-12 13:52:27 C 20 58 15.605 +21 40 30.43 V T05
2023-07-14 10:22:33 C 20 53 55.975 +21 59 31.67 V T05
2023-07-14 10:27:55 C 20 53 55.411 +21 59 33.43 V T05
2023-07-14 10:41:36 C 20 53 54.065 +21 59 39.01 V T05
2023-07-14 10:42:15 C 20 53 53.976 +21 59 39.37 V T05
2023-07-15 05:38:48 C 20 52 03.223 +22 06 58.79 V W68
2023-07-15 05:57:48 C 20 52 01.267 +22 07 05.81 V W68
2023-07-15 06:04:26 C 20 52 00.634 +22 07 07.75 V W68
2023-07-15 21:29:11 C 20 50 31.11 +22 12 22.1 X M26
2023-07-15 21:39:03 C 20 50 30.12 +22 12 25.3 X M26
2023-07-15 21:48:55 C 20 50 29.17 +22 12 28.8 X M26
2023-07-15 22:16:05 C 20 50 26.49 +22 12 38.5 V G17
2023-07-15 22:26:16 C 20 50 25.48 +22 12 41.9 V G17
2023-07-15 22:36:26 C 20 50 24.48 +22 12 45.6 V G17
2023-07-16 10:15:56 C 20 49 16.570 +22 16 41.56 V T05
2023-07-16 10:20:37 C 20 49 16.097 +22 16 42.92 V T05
2023-07-16 10:22:35 C 20 49 15.886 +22 16 43.61 V T05
2023-07-16 10:25:13 C 20 49 15.638 +22 16 44.98 V T05
2023-07-16 10:27:12 C 20 49 15.427 +22 16 44.76 V T05
2023-07-16 10:31:14 C 20 49 15.041 +22 16 46.81 V T05
2023-07-16 10:34:28 C 20 49 14.710 +22 16 47.64 V T05
2023-07-20 11:54:16 C 20 39 54.254 +22 41 20.33 V T05
2023-07-20 11:58:25 C 20 39 53.834 +22 41 20.87 V T05
2023-07-20 12:06:14 C 20 39 53.071 +22 41 22.49 V T05
2023-07-20 12:21:18 C 20 39 51.619 +22 41 25.04 V T05
2023-07-30 10:04:43 C 20 18 44.690 +22 48 21.24 V T05
2023-07-30 10:13:39 C 20 18 43.915 +22 48 20.23 V T05
2023-07-30 11:03:51 C 20 18 39.686 +22 48 14.94 V T05
2023-07-30 11:08:08 C 20 18 39.290 +22 48 13.79 V T05
2023-07-31 04:46:40 C 20 17 13.656 +22 46 12.90 V W68
2023-07-31 04:51:17 C 20 17 13.258 +22 46 12.47 V W68
2023-07-31 05:38:48 C 20 17 09.331 +22 46 05.95 V W68
2023-07-31 05:46:58 C 20 17 08.683 +22 46 05.12 V W68
2023-08-06 21:36:47 C 20 05 17.48 +22 13 03.7 V 130
2023-08-06 21:43:56 C 20 05 16.94 +22 13 01.4 V 130
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-06-27 05:19:00 201575257.47 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)