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
2007-12-21 00:55:48 C 06 39 27.45 +14 40 31.0 r 204
2007-12-21 00:58:21 C 06 39 26.93 +14 40 16.2 r 204
2007-12-21 01:00:55 C 06 39 26.41 +14 40 01.5 r 204
2007-12-21 22:17:51 C 06 35 11.28 +12 34 13.0 r A78
2007-12-21 22:22:11 C 06 35 10.34 +12 33 46.0 r A78
2007-12-21 22:36:09 C 06 35 07.36 +12 32 21.6 r A78
2007-12-29 07:50:52 C 05 52 33.78 -08 56 25.5 r H45
2007-12-29 07:53:53 C 05 52 32.93 -08 56 49.4 r H45
2007-12-29 07:54:55 C 05 52 32.64 -08 56 57.7 r H45
2007-12-29 07:56:46 C 05 52 32.11 -08 57 12.8 r H45
2007-12-29 07:58:10 C 05 52 31.72 -08 57 24.3 r H45
2007-12-29 07:59:32 C 05 52 31.34 -08 57 35.0 r H45
2008-01-13 10:44:05 C 03 59 03.35 -47 31 12.3 r 432
2008-01-13 11:22:41 C 03 58 50.57 -47 33 37.2 r 432
2008-01-13 12:01:18 C 03 58 37.57 -47 36 00.6 r 432
2008-01-14 13:32:51 C 03 50 24.21 -49 07 19.1 r E12
2008-01-14 14:01:58 C 03 50 14.67 -49 08 56.9 r E12
2008-01-14 14:16:30 C 03 50 09.92 -49 09 45.2 r E12
2008-06-26 06:13:13 C 20 22 31.24 +21 37 01.5 o H55
2008-06-26 06:21:03 C 20 22 30.29 +21 37 10.2 o H55
2012-11-28 12:03:28 C 07 22 30.296 +42 31 53.43 L F51
2012-11-28 12:22:38 C 07 22 29.172 +42 31 32.94 L F51
2012-11-29 08:57:00 C 07 21 19.60 +42 08 37.4 u H21
2012-11-29 09:06:05 C 07 21 19.05 +42 08 26.7 u H21
2012-11-29 09:15:00 C 07 21 18.47 +42 08 16.5 u H21
2012-12-09 23:51:29 C 06 58 03.76 +34 59 22.3 o J13
2012-12-09 23:52:08 C 06 58 03.67 +34 59 20.5 o J13
2012-12-09 23:52:47 C 06 58 03.59 +34 59 19.1 o J13
2012-12-09 23:53:26 C 06 58 03.50 +34 59 17.4 o J13
2012-12-10 03:20:57 C 06 57 35.01 +34 50 50.0 c A24
2012-12-10 03:23:01 C 06 57 34.71 +34 50 45.3 c A24
2012-12-10 03:43:08 C 06 57 32.03 +34 49 55.6 c A24
2012-12-10 04:06:33 C 06 57 28.92 +34 48 57.5 c A24
2012-12-10 04:25:58 C 06 57 26.30 +34 48 10.3 c A24
2012-12-10 04:28:03 C 06 57 26.07 +34 48 04.4 c A24
2012-12-10 06:11:50 C 06 57 14.47 +34 43 55.3 r 703
2012-12-10 06:19:10 C 06 57 13.50 +34 43 37.9 r 703
2012-12-10 06:26:34 C 06 57 12.49 +34 43 19.1 r 703
2012-12-10 06:33:59 C 06 57 11.44 +34 43 01.5 r 703
2012-12-10 06:41:21 C 06 57 10.51 +34 42 43.8 r 703
2012-12-11 04:01:11 C 06 54 17.26 +33 48 21.0 c A24
2012-12-11 04:03:15 C 06 54 16.97 +33 48 15.1 c A24
2012-12-11 04:23:21 C 06 54 14.07 +33 47 21.9 c A24
2012-12-11 04:46:24 C 06 54 10.85 +33 46 20.3 c A24
2012-12-11 05:08:14 C 06 54 07.78 +33 45 22.4 c A24
2012-12-12 02:32:11 C 06 51 06.78 +32 47 00.1 c A24
2012-12-12 02:33:13 C 06 51 06.65 +32 46 57.1 c A24
2012-12-12 02:34:15 C 06 51 06.50 +32 46 54.2 c A24
2012-12-12 03:37:08 C 06 50 57.06 +32 43 54.9 c A24
2012-12-12 03:38:10 C 06 50 56.89 +32 43 52.3 c A24