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
2007-11-14 10:14:00 C 07 39 09.17 +45 02 08.3 o 673
2007-11-14 10:22:09 C 07 39 09.26 +45 02 04.2 o 673
2007-11-14 10:29:29 C 07 39 09.35 +45 01 59.9 o 673
2007-11-14 10:36:20 C 07 39 09.43 +45 01 56.3 o 673
2007-12-03 10:38:09 C 07 31 05.33 +37 38 25.7 19.5 c 704
2007-12-03 10:56:28 C 07 31 04.16 +37 37 55.8 19.7 c 704
2007-12-03 11:14:48 C 07 31 03.02 +37 37 26.5 20.1 c 704
2007-12-03 11:33:09 C 07 31 01.77 +37 36 55.5 19.6 c 704
2007-12-03 11:51:28 C 07 31 00.53 +37 36 25.8 20.1 c 704
2007-12-04 10:56:39 C 07 29 33.23 +36 57 25.8 r H45
2007-12-04 10:59:18 C 07 29 32.98 +36 57 20.4 r H45
2007-12-04 11:01:37 C 07 29 32.87 +36 57 16.4 r H45
2007-12-04 11:03:50 C 07 29 32.71 +36 57 12.7 r H45
2007-12-04 11:06:01 C 07 29 32.53 +36 57 08.7 r H45
2007-12-05 06:55:07 C 07 28 12.91 +36 21 34.3 w 699
2007-12-05 07:32:15 C 07 28 10.10 +36 20 26.6 w 699
2007-12-05 08:09:17 C 07 28 07.31 +36 19 18.4 w 699
2007-12-05 08:46:27 C 07 28 04.52 +36 18 10.6 w 699
2007-12-13 07:44:43 C 07 09 18.66 +28 21 37.2 18.2 c 704
2007-12-13 08:03:19 C 07 09 16.11 +28 20 32.4 20.1 c 704
2007-12-13 08:21:53 C 07 09 13.67 +28 19 34.4 18.6 c 704
2007-12-13 08:40:27 C 07 09 11.15 +28 18 33.0 18.8 c 704
2007-12-13 08:59:02 C 07 09 08.67 +28 17 32.0 18.6 c 704
2007-12-14 07:35:30 C 07 06 09.92 +27 00 04.1 18.2 c 704
2007-12-14 07:54:12 C 07 06 07.32 +26 58 58.0 18.1 c 704
2007-12-14 08:12:54 C 07 06 04.58 +26 57 52.5 18.0 c 704
2007-12-14 08:31:37 C 07 06 01.96 +26 56 45.3 18.2 c 704
2007-12-14 08:50:17 C 07 05 59.25 +26 55 38.8 18.2 c 704
2007-12-15 09:25:34 C 07 02 31.53 +25 24 37.6 o 691
2007-12-16 12:17:40 C 06 58 28.70 +23 36 47.9 r H45
2007-12-18 01:26:22 C 06 52 29.63 +20 52 28.0 c A24
2007-12-18 01:27:27 C 06 52 29.43 +20 52 22.3 c A24
2007-12-18 02:15:24 C 06 52 21.06 +20 48 36.9 c A24
2007-12-18 02:16:30 C 06 52 20.87 +20 48 32.5 c A24
2007-12-18 03:04:11 C 06 52 12.59 +20 44 48.1 c A24
2007-12-18 03:05:19 C 06 52 12.32 +20 44 42.4 c A24
2007-12-18 10:19:56 C 06 50 58.31 +20 10 23.6 o 691
2007-12-18 10:26:39 C 06 50 57.09 +20 09 51.2 o 691
2007-12-18 10:31:00 C 06 50 56.24 +20 09 27.9 o 691
2007-12-19 22:11:25 C 06 44 35.85 +17 08 41.7 r J51
2007-12-19 22:18:14 C 06 44 34.55 +17 08 05.7 r J51
2007-12-19 22:25:02 C 06 44 33.26 +17 07 29.7 r J51
2007-12-19 23:08:09 C 06 44 24.15 +17 03 33.9 r B09
2007-12-19 23:11:52 C 06 44 23.38 +17 03 14.1 r B09
2007-12-19 23:15:13 C 06 44 22.79 +17 02 56.3 r B09
2007-12-19 23:17:47 C 06 44 22.27 +17 02 43.2 r B09
2007-12-19 23:24:44 C 06 44 20.96 +17 02 05.6 r B09
2007-12-19 23:28:07 C 06 44 20.29 +17 01 47.2 r B09
2007-12-21 00:50:39 C 06 39 28.49 +14 41 00.5 r 204
2007-12-21 00:53:13 C 06 39 27.98 +14 40 45.7 r 204