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
2023-01-21 01:28:21 C 03 01 47.201 -31 47 44.81 V W68
2023-05-24 09:57:34 C 21 42 55.656 -06 58 59.30 V G96
2023-05-24 10:05:09 C 21 42 54.997 -06 58 41.95 V G96
2023-05-24 10:12:43 C 21 42 54.374 -06 58 24.96 V G96
2023-05-24 10:20:17 C 21 42 53.730 -06 58 08.04 V G96
2023-07-26 06:55:37 C 18 46 57.101 +25 15 29.43 X F52
2023-07-26 07:13:21 C 18 46 55.675 +25 15 28.26 X F52
2023-07-26 07:31:16 C 18 46 54.240 +25 15 26.83 X F52
2023-07-26 07:49:24 C 18 46 52.786 +25 15 25.54 X F52