189173 (2002 XY4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5701787110 ± 3.79e-08
Semi-major axis (a)1.8439640462 AU ± 8.07e-10
Inclination (i)43.07745727° ± 1.31e-05
Long. of Asc. Node (Ω)268.89582772° ± 2.08e-06
Arg. of Perihelion (ω)273.71704757° ± 7.48e-06
Mean Anomaly (M)27.83667638° ± 3.18e-06
Mean Motion (n)0.3936258422°/day ± 2.58e-10
Perihelion dist (q)0.79257500 AU ± 6.98e-08
Aphelion dist (Q)2.89535309 AU ± 6.98e-08
Orbital Period2.50396742 yr ± 1.64e-09
Physical Parameters
H (abs. magnitude)18.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.330″
Uncertainty0
Orbit TypeApollo
MOID0.140238 AU
Observations Used444
Oppositions13
Arc Total2002-2023
First Observation Used2002-12-05
Last Observation Used2023-07-26
Observations (459)
Date Type RA Dec Mag Band Observatory
2002-12-13 02:12:50 C 07 32 48.51 +23 06 40.8 c 246
2002-12-13 02:13:47 C 07 32 48.44 +23 06 37.5 c 246
2002-12-13 02:14:32 C 07 32 48.35 +23 06 34.3 c 246
2002-12-13 02:15:39 C 07 32 48.24 +23 06 30.0 c 246
2002-12-13 02:16:29 C 07 32 48.15 +23 06 27.0 c 246
2002-12-13 02:17:21 C 07 32 48.04 +23 06 23.8 c 246
2002-12-13 15:27:52 C 07 31 28.80 +22 15 05.7 m 413
2002-12-13 15:29:51 C 07 31 28.57 +22 14 57.5 m 413
2002-12-15 10:33:08 C 07 26 42.86 +19 09 44.0 c 448
2002-12-15 10:37:34 C 07 26 42.31 +19 09 23.7 c 448
2002-12-15 10:42:13 C 07 26 41.74 +19 09 02.3 c 448
2002-12-18 21:18:35 C 07 15 45.77 +11 58 45.5 c 587
2002-12-18 21:20:11 C 07 15 45.48 +11 58 36.4 c 587
2002-12-18 21:21:47 C 07 15 45.17 +11 58 26.9 c 587
2002-12-22 04:17:48 C 07 02 40.81 +03 22 38.4 c 844
2002-12-22 04:20:34 C 07 02 40.07 +03 22 14.8 c 844
2002-12-27 14:51:37 C 06 34 33.849 -14 20 52.02 m 413
2002-12-27 14:53:30 C 06 34 33.345 -14 21 08.63 m 413
2002-12-27 14:55:30 C 06 34 32.822 -14 21 26.05 m 413
2002-12-28 15:37:40 C 06 28 12.30 -17 59 44.7 m 413
2002-12-28 15:39:38 C 06 28 11.77 -18 00 01.9 m 413
2002-12-28 15:41:30 C 06 28 11.26 -18 00 18.4 m 413
2002-12-29 13:44:39 C 06 22 15.71 -21 15 32.8 e 413
2002-12-29 13:46:25 C 06 22 15.19 -21 15 48.4 e 413
2002-12-29 13:48:11 C 06 22 14.69 -21 16 03.8 e 413
2002-12-30 05:27:06 C 06 17 52.34 -23 34 23.1 17.6 c 704
2002-12-30 05:48:40 C 06 17 45.97 -23 37 32.5 17.8 c 704
2002-12-30 06:10:42 C 06 17 39.46 -23 40 45.9 17.7 c 704
2002-12-30 06:54:10 C 06 17 26.64 -23 47 06.5 18.0 c 704
2003-01-02 13:21:24 C 05 53 16.90 -34 43 26.4 c E14
2003-01-02 13:24:17 C 05 53 15.91 -34 43 49.5 c E14
2003-01-02 13:27:10 C 05 53 14.94 -34 44 11.8 c E14
2003-01-11 11:55:52 C 04 31 12.56 -55 41 50.0 c E14
2003-01-11 12:01:15 C 04 31 10.18 -55 42 11.0 c E14
2003-01-11 12:06:38 C 04 31 07.83 -55 42 32.0 c E14
2003-01-29 11:10:52 C 01 33 57.389 -67 20 13.90 e 413
2003-01-29 11:14:53 C 01 33 55.946 -67 20 14.28 e 413
2003-01-29 11:17:12 C 01 33 55.095 -67 20 14.92 e 413
2003-01-30 10:24:11 C 01 25 49.44 -67 25 13.2 e 413
2003-01-30 10:26:39 C 01 25 48.48 -67 25 13.7 e 413
2003-01-30 10:29:09 C 01 25 47.59 -67 25 14.0 e 413
2003-04-22 19:07:07 C 21 54 58.54 -24 10 48.8 e 413
2003-04-23 19:25:45 C 21 54 47.26 -23 25 35.5 e 413
2007-11-10 07:48:44 C 07 37 07.80 +45 52 28.1 o H55
2007-11-10 08:01:14 C 07 37 08.01 +45 52 22.2 o H55
2007-11-10 08:13:43 C 07 37 08.37 +45 52 16.3 o H55
2007-11-11 10:40:20 C 07 37 46.83 +45 39 39.3 o 673
2007-11-11 10:50:19 C 07 37 47.00 +45 39 34.5 o 673
2007-11-11 10:56:40 C 07 37 47.11 +45 39 31.4 o 673
2007-11-11 11:17:39 C 07 37 47.48 +45 39 21.3 o 673