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
1990-07-27 07:18:59 20 22 40.73 +22 10 52.5 675
1990-07-27 08:14:00 20 22 35.91 +22 10 51.2 675
1999-11-17 10:18:46 C 09 22 44.37 +09 15 16.5 18.8 a 704
1999-11-17 11:02:47 C 09 22 48.88 +09 14 02.8 19.0 a 704
1999-11-17 11:24:44 C 09 22 51.19 +09 13 27.3 19.1 a 704
1999-11-17 11:46:36 C 09 22 53.48 +09 12 51.1 19.2 a 704
1999-11-19 03:45:52 C 09 27 08.62 +08 04 52.2 557
1999-11-19 03:47:44 C 09 27 08.77 +08 04 49.5 557
1999-11-19 03:49:34 C 09 27 09.02 +08 04 45.0 557
1999-11-19 03:53:16 C 09 27 09.43 +08 04 39.2 557
1999-11-20 00:46:29 C 09 29 24.90 +07 27 54.4 z 587
1999-11-21 03:57:04 C 09 32 22.38 +06 38 41.3 c 046
1999-11-21 03:59:45 C 09 32 22.64 +06 38 37.1 c 046
1999-11-21 04:02:09 C 09 32 22.91 +06 38 32.9 c 046
1999-11-21 04:04:18 C 09 32 23.10 +06 38 27.9 c 046
1999-11-21 04:06:38 C 09 32 23.43 +06 38 23.9 c 046
1999-11-27 01:52:59 C 09 48 34.42 +01 54 37.4 c 046
1999-11-27 01:54:59 C 09 48 34.73 +01 54 31.7 c 046
1999-11-27 01:56:40 C 09 48 35.05 +01 54 28.2 c 046
1999-11-27 02:01:56 C 09 48 35.54 +01 54 15.9 c 046
1999-12-16 13:29:16 C 10 56 21.96 -19 57 50.4 i 670
1999-12-16 13:32:02 C 10 56 22.59 -19 58 02.0 i 670
1999-12-17 12:04:02 C 11 00 33.28 -21 15 21.0 i 670
1999-12-17 12:49:52 C 11 00 41.61 -21 17 57.1 i 670
1999-12-18 17:17:08 C 11 06 08.88 -22 56 40.8 z 428
1999-12-18 17:37:20 C 11 06 12.61 -22 57 51.6 z 428
1999-12-30 17:56:33 C 12 15 38.82 -39 56 35.4 413
1999-12-30 17:58:40 C 12 15 39.42 -39 56 42.0 413
2000-02-07 17:58:57 C 18 15 45.77 -51 43 39.1 413
2000-02-07 18:01:39 C 18 15 46.52 -51 43 35.4 413
2000-02-10 17:51:45 C 18 34 16.88 -50 02 01.2 18.9 m 422
2000-02-10 17:52:35 C 18 34 17.10 -50 02 00.8 19.1 m 422
2000-02-10 17:53:19 C 18 34 17.21 -50 01 58.8 18.8 m 422
2000-06-03 09:30:47 C 22 20 57.95 +12 49 41.5 c 699
2000-06-03 09:58:08 C 22 20 57.92 +12 50 10.5 c 699
2000-06-03 10:11:47 C 22 20 57.79 +12 50 23.5 c 699
2000-07-21 10:26:04 C 21 35 23.66 +26 41 11.5 c 658
2000-07-21 10:46:49 C 21 35 22.15 +26 41 17.4 c 658
2000-08-28 06:42:27 C 20 35 27.20 +24 33 32.7 c 658
2000-08-28 06:52:07 C 20 35 26.71 +24 33 28.6 c 658
2000-08-28 07:01:30 C 20 35 26.24 +24 33 24.4 c 658
2002-12-01 06:22:48 C 04 15 34.07 +41 43 29.0 c 649
2002-12-01 06:30:35 C 04 15 33.37 +41 43 25.0 c 649
2002-12-01 06:38:19 C 04 15 32.71 +41 43 20.8 c 649
2002-12-07 07:28:24 C 04 02 45.14 +40 19 43.6 19.5 c 704
2002-12-07 07:50:12 C 04 02 43.21 +40 19 29.7 19.3 c 704
2002-12-07 08:34:27 C 04 02 39.09 +40 19 00.7 19.6 c 704
2003-01-04 03:57:04 C 03 16 44.28 +30 58 07.3 18.9 c 704
2003-01-04 04:21:25 C 03 16 43.35 +30 57 44.4 19.5 c 704
2003-01-04 04:45:42 C 03 16 42.26 +30 57 22.0 19.4 c 704
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)