439854 (1998 XA5)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3071831048 ± 7.74e-08
Semi-major axis (a)1.5583005808 AU ± 1.75e-08
Inclination (i)31.75771298° ± 1.66e-05
Long. of Asc. Node (Ω)274.15237535° ± 4.16e-06
Arg. of Perihelion (ω)211.32659630° ± 4.73e-05
Mean Anomaly (M)283.37460518° ± 1.06e-04
Mean Motion (n)0.5066819431°/day ± 8.55e-09
Perihelion dist (q)1.07961697 AU ± 1.21e-07
Aphelion dist (Q)2.03698419 AU ± 1.23e-07
Orbital Period1.94525638 yr ± 3.28e-08
Physical Parameters
H (abs. magnitude)18.73
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.597″
Uncertainty0
Orbit TypeAmor
MOID0.130179 AU
Observations Used257
Oppositions13
Arc Total1997-2023
First Observation Used1997-01-13
Last Observation Used2023-07-15
Observations (266)
Date Type RA Dec Mag Band Observatory
2021-06-17 12:56:21 C 21 40 40.643 +12 09 03.99 U F51
2021-06-17 13:12:47 C 21 40 40.411 +12 09 19.05 U F51
2023-06-28 11:50:18 C 22 01 44.137 +20 33 54.17 X F52
2023-06-28 12:08:00 C 22 01 43.825 +20 34 11.63 X F52
2023-06-28 12:25:44 C 22 01 43.552 +20 34 28.55 X F52
2023-07-11 07:13:20 C 21 53 39.19 +25 26 13.0 u H21
2023-07-11 07:33:04 C 21 53 38.39 +25 26 30.9 u H21
2023-07-11 07:36:01 C 21 53 38.27 +25 26 33.3 u H21
2023-07-12 07:00:55 C 21 52 44.09 +25 47 53.4 u H21
2023-07-12 07:22:00 C 21 52 43.22 +25 48 13.0 u H21
2023-07-12 07:24:57 C 21 52 43.08 +25 48 15.6 u H21
2023-07-14 07:07:49 C 21 50 44.64 +26 31 04.1 u H21
2023-07-14 07:35:49 C 21 50 43.41 +26 31 29.2 u H21
2023-07-15 09:36:20 C 21 49 34.270 +26 54 25.85 V G96
2023-07-15 09:44:53 C 21 49 33.827 +26 54 33.48 V G96
2023-07-15 10:01:56 C 21 49 33.042 +26 54 48.71 V G96