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
2017-12-08 06:51:46 C 06 43 29.80 +40 09 35.7 U G96
2017-12-08 18:39:22 C 06 41 52.44 +39 47 32.3 q D29
2017-12-08 18:59:43 C 06 41 49.47 +39 46 54.2 q D29
2017-12-11 11:49:50 C 06 32 13.90 +37 29 41.0 U T08
2017-12-11 12:06:24 C 06 32 11.23 +37 29 01.0 U T08
2017-12-11 12:13:51 C 06 32 09.98 +37 28 44.2 U T08
2017-12-11 12:15:55 C 06 32 09.66 +37 28 39.7 U T08
2017-12-14 07:37:40 C 06 20 48.10 +34 32 44.3 U 703
2017-12-14 07:45:20 C 06 20 46.67 +34 32 22.5 U 703
2017-12-14 07:52:59 C 06 20 45.24 +34 31 59.8 U 703
2017-12-15 11:50:10 C 06 15 36.99 +33 07 32.6 U T08
2017-12-15 11:55:40 C 06 15 35.92 +33 07 15.1 U T08
2017-12-15 11:56:20 C 06 15 35.76 +33 07 13.1 U T08
2017-12-15 12:18:31 C 06 15 31.46 +33 06 02.6 U T08
2017-12-16 00:11:37 C 06 13 16.73 +32 27 37.4 U 130
2017-12-16 00:13:53 C 06 13 16.29 +32 27 29.7 U 130
2017-12-16 00:17:34 C 06 13 15.55 +32 27 17.6 U 130
2017-12-16 00:22:44 C 06 13 14.56 +32 27 00.8 U 130
2017-12-17 01:12:53 C 06 08 23.52 +31 02 28.4 q 160
2017-12-17 01:15:47 C 06 08 22.97 +31 02 17.8 q 160
2017-12-17 01:18:40 C 06 08 22.34 +31 02 08.0 q 160
2017-12-18 00:06:05 C 06 03 46.72 +29 38 53.4 17.6 q 160
2017-12-18 00:08:58 C 06 03 46.15 +29 38 42.7 17.6 q 160
2017-12-18 00:11:54 C 06 03 45.49 +29 38 31.6 17.4 q 160
2017-12-18 04:47:21 C 06 02 50.30 +29 21 04.0 U I41
2017-12-18 07:06:47 C 06 02 20.64 +29 12 12.0 U I41
2017-12-18 07:43:15 C 06 02 12.83 +29 09 51.7 U I41
2017-12-18 08:27:48 C 06 02 03.28 +29 06 59.5 U I41
2017-12-19 00:56:39 C 05 58 35.88 +28 01 40.5 q 160
2017-12-19 00:59:34 C 05 58 35.19 +28 01 28.0 q 160
2017-12-19 01:02:27 C 05 58 34.59 +28 01 16.9 q 160
2017-12-20 00:20:33 C 05 53 35.13 +26 23 46.6 U J27
2017-12-20 00:26:00 C 05 53 33.90 +26 23 23.2 U J27
2017-12-20 00:36:31 C 05 53 31.54 +26 22 37.6 U J27
2017-12-21 00:05:03 C 05 48 20.95 +24 37 54.1 q 160
2017-12-21 00:07:52 C 05 48 20.30 +24 37 41.3 q 160
2017-12-21 00:10:42 C 05 48 19.65 +24 37 27.5 q 160
2017-12-23 00:11:17 C 05 37 22.70 +20 43 11.0 U J27
2017-12-23 00:20:49 C 05 37 20.41 +20 42 22.0 U J27
2017-12-23 00:29:50 C 05 37 18.27 +20 41 34.9 U J27
2017-12-24 00:01:43 C 05 31 46.20 +18 36 52.5 q 160
2017-12-24 00:03:59 C 05 31 45.68 +18 36 40.0 q 160
2017-12-24 00:06:17 C 05 31 45.14 +18 36 27.4 q 160
2017-12-25 06:08:47 C 05 24 34.65 +15 48 29.3 U G96
2017-12-25 06:16:08 C 05 24 32.81 +15 47 47.0 U G96
2017-12-25 06:23:30 C 05 24 30.98 +15 47 04.4 U G96
2017-12-25 06:30:52 C 05 24 29.13 +15 46 22.3 U G96
2017-12-26 05:18:44 C 05 18 57.63 +13 32 34.0 U 703
2017-12-26 05:26:28 C 05 18 55.69 +13 31 47.7 U 703
2017-12-26 05:34:11 C 05 18 53.75 +13 31 00.9 U 703