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
2023-01-12 01:32:52 C 06 38 37.57 -20 58 12.5 q X33
2023-01-13 03:49:47 C 06 34 02.054 -22 52 31.91 V W68
2023-01-13 04:35:15 C 06 33 53.635 -22 55 50.12 V W68
2023-01-13 04:39:08 C 06 33 52.918 -22 56 07.15 V W68
2023-01-13 04:46:19 C 06 33 51.586 -22 56 38.36 V W68
2023-01-14 04:40:28 C 06 29 31.788 -24 41 02.00 V W68
2023-01-14 04:44:24 C 06 29 31.032 -24 41 19.07 V W68
2023-01-14 04:57:53 C 06 29 28.457 -24 42 18.00 V W68
2023-01-14 05:14:15 C 06 29 25.322 -24 43 28.99 V W68
2023-01-14 22:31:12 C 06 26 11.839 -25 58 54.08 V M22
2023-01-14 22:35:47 C 06 26 10.949 -25 59 13.99 V M22
2023-01-14 22:44:55 C 06 26 09.156 -25 59 53.59 V M22
2023-01-14 22:59:15 C 06 26 06.346 -26 00 55.98 V M22
2023-01-15 21:26:55 C 06 21 47.870 -27 38 39.08 V M22
2023-01-15 21:31:24 C 06 21 46.944 -27 38 58.56 V M22
2023-01-15 22:14:41 C 06 21 38.167 -27 42 06.16 V M22
2023-01-15 22:32:49 C 06 21 34.495 -27 43 24.42 V M22
2023-01-18 03:21:08 C 06 10 52.766 -31 30 07.70 V W68
2023-01-18 03:25:41 C 06 10 51.778 -31 30 26.96 V W68
2023-01-18 04:15:19 C 06 10 40.975 -31 33 56.77 V W68
2023-01-19 21:33:43 C 06 01 46.889 -34 26 31.42 V M22
2023-01-19 21:38:16 C 06 01 45.850 -34 26 50.03 V M22
2023-01-19 21:47:00 C 06 01 43.846 -34 27 25.81 V M22
2023-01-19 22:02:07 C 06 01 40.385 -34 28 27.77 V M22
2023-01-23 20:09:32 C 05 39 41.976 -40 38 15.25 V M22
2023-01-23 20:14:05 C 05 39 40.817 -40 38 32.17 V M22
2023-01-23 20:39:27 C 05 39 34.368 -40 40 06.38 V M22
2023-01-25 20:50:55 C 05 27 25.524 -43 33 36.86 V M22
2023-01-25 20:55:28 C 05 27 24.307 -43 33 52.63 V M22
2023-01-25 21:03:57 C 05 27 22.039 -43 34 21.94 V M22
2023-01-25 21:19:03 C 05 27 18.012 -43 35 14.10 V M22
2023-01-28 02:32:43 C 05 13 12.900 -46 32 43.01 V W68
2023-01-28 02:37:15 C 05 13 11.626 -46 32 57.52 V W68
2023-01-28 02:46:23 C 05 13 09.067 -46 33 26.42 V W68
2023-01-28 03:02:01 C 05 13 04.682 -46 34 15.89 V W68
2023-01-29 02:48:45 S 05 06 34.54 -47 48 25.0 L C51
2023-01-29 04:22:27 S 05 06 08.55 -47 53 10.9 L C51
2023-01-29 05:56:09 S 05 05 42.52 -47 57 56.3 L C51
2023-01-29 07:29:51 S 05 05 16.48 -48 02 40.7 L C51
2023-01-29 10:37:15 S 05 04 24.27 -48 12 07.0 L C51
2023-01-29 20:24:30 C 05 01 38.921 -48 41 26.95 V M22
2023-01-29 20:29:05 C 05 01 37.608 -48 41 40.24 V M22
2023-01-29 20:37:39 C 05 01 35.131 -48 42 05.36 V M22
2023-01-29 20:52:19 C 05 01 30.859 -48 42 48.35 V M22
2023-02-01 02:14:47 C 04 46 09.36 -51 12 46.9 q 834
2023-02-01 02:40:38 C 04 46 02.141 -51 13 57.14 V W68
2023-02-01 02:45:12 C 04 46 00.739 -51 14 09.13 V W68
2023-02-01 02:52:05 C 04 45 58.15 -51 14 24.8 q 834
2023-02-01 02:53:41 C 04 45 58.169 -51 14 31.42 V W68
2023-02-01 03:29:17 C 04 45 47.400 -51 16 04.55 V W68
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)