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
2017-12-26 05:41:55 C 05 18 51.80 +13 30 15.7 U 703
2017-12-29 08:45:46 C 05 00 19.81 +05 39 22.2 U T08
2017-12-29 08:57:31 C 05 00 16.81 +05 38 06.1 U T08
2017-12-29 09:09:18 C 05 00 13.77 +05 36 48.8 U T08
2017-12-29 09:21:23 C 05 00 10.64 +05 35 30.7 U T08
2018-01-04 08:29:41 C 04 24 53.99 -10 02 46.1 U T05
2018-01-04 08:40:56 C 04 24 51.15 -10 03 57.1 U T05
2018-01-04 08:41:36 C 04 24 51.01 -10 04 02.3 U T05
2018-01-04 08:53:02 C 04 24 48.13 -10 05 14.3 U T05
2018-01-04 08:53:42 C 04 24 48.01 -10 05 18.5 U T05
2018-01-04 09:04:52 C 04 24 45.19 -10 06 28.7 U T05
2018-01-04 09:05:31 C 04 24 45.03 -10 06 33.4 U T05
2018-01-04 09:16:47 C 04 24 42.21 -10 07 44.3 U T05
2018-01-05 08:41:57 C 04 19 05.84 -12 34 04.1 U T08
2018-01-05 08:53:10 C 04 19 03.11 -12 35 13.0 U T08
2018-01-05 09:04:27 C 04 19 00.28 -12 36 22.3 U T08
2018-01-05 09:15:51 C 04 18 57.50 -12 37 32.8 U T08
2018-01-07 08:04:48 C 04 07 59.094 -17 16 32.60 U F51
2018-01-07 08:25:39 C 04 07 54.090 -17 18 32.25 U F51
2018-01-07 08:46:28 C 04 07 49.106 -17 20 31.46 U F51
2018-01-08 06:17:33 C 04 02 53.16 -19 21 50.9 U 703
2018-01-08 06:25:30 C 04 02 51.28 -19 22 34.4 U 703
2018-01-08 06:33:27 C 04 02 49.41 -19 23 17.7 U 703
2018-01-08 06:41:23 C 04 02 47.53 -19 24 01.5 U 703
2018-01-13 02:32:02 S 03 37 44.33 -28 53 32.9 L C51
2018-01-13 05:40:21 S 03 37 05.69 -29 07 02.7 L C51
2018-01-13 07:14:36 S 03 36 46.41 -29 13 45.9 L C51
2018-01-13 10:23:06 S 03 36 07.93 -29 27 08.0 L C51
2018-05-18 03:37:23 S 21 50 16.817 -10 18 23.83 L C51
2018-05-18 06:45:43 S 21 50 05.347 -10 11 39.59 L C51
2018-06-12 08:43:37 C 20 57 07.31 +10 59 10.0 U G96
2018-06-12 08:51:10 C 20 57 06.43 +10 59 24.1 U G96
2018-06-12 08:58:42 C 20 57 05.50 +10 59 38.6 U G96
2018-06-12 09:06:14 C 20 57 04.61 +10 59 52.5 U G96
2022-11-01 13:58:10 C 07 06 38.286 +51 20 45.10 U F51
2022-11-01 14:18:11 C 07 06 38.705 +51 20 42.62 U F51
2022-11-01 14:38:15 C 07 06 39.135 +51 20 40.08 U F51
2022-11-01 14:58:16 C 07 06 39.571 +51 20 37.38 U F51
2022-11-26 13:35:12 C 06 56 21.454 +48 09 21.16 U F51
2022-11-26 13:51:26 C 06 56 20.193 +48 09 10.17 U F51
2022-11-26 14:23:56 C 06 56 17.651 +48 08 47.93 U F51
2022-11-30 00:22:18 C 06 49 29.11 +47 05 41.2 X C95
2022-11-30 00:32:23 C 06 49 28.20 +47 05 32.4 X C95
2022-11-30 00:41:21 C 06 49 27.24 +47 05 25.2 X C95
2022-11-30 21:00:57 C 06 47 30.38 +46 46 59.6 X K19
2022-11-30 21:06:16 C 06 47 29.86 +46 46 54.9 X K19
2022-11-30 21:11:35 C 06 47 29.35 +46 46 50.3 X K19
2022-12-02 09:00:49 C 06 43 45.052 +46 11 38.36 V 703
2022-12-02 09:09:24 C 06 43 43.964 +46 11 28.68 V 703
2022-12-02 09:17:58 C 06 43 43.075 +46 11 20.00 V 703