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
1998-12-15 20:38:49 C 08 02 41.09 +45 23 44.2 540
1998-12-16 19:18:00 C 07 59 07.28 +43 21 50.8 360
1998-12-16 19:20:00 C 07 59 06.94 +43 21 39.4 360
1998-12-16 19:21:59 C 07 59 06.60 +43 21 28.1 360
1998-12-18 19:51:30 C 07 51 17.04 +38 23 40.9 z 402
1998-12-18 19:53:30 C 07 51 16.68 +38 23 27.3 z 402
1998-12-18 19:55:31 C 07 51 16.33 +38 23 13.7 z 402
1998-12-18 22:45:59 C 07 50 52.72 +38 04 03.5 z 587
1998-12-18 22:48:27 C 07 50 52.27 +38 03 47.3 z 587
1998-12-18 22:54:59 C 07 50 50.99 +38 03 01.7 z 151
1998-12-18 22:55:45 C 07 50 50.99 +38 02 58.5 z 587
1998-12-18 23:00:24 C 07 50 50.00 +38 02 26.2 z 151
1998-12-18 23:04:12 C 07 50 49.41 +38 02 01.0 z 151
1998-12-18 23:06:39 C 07 50 49.01 +38 01 43.8 z 151
1998-12-19 20:53:39 C 07 47 10.56 +35 29 08.2 15.8 143
1998-12-19 20:54:48 C 07 47 10.36 +35 29 00.4 15.7 143
1998-12-19 20:55:54 C 07 47 10.15 +35 28 51.6 15.8 143
1998-12-20 00:17:24 C 07 46 32.97 +35 04 37.6 z 071
1998-12-20 00:20:13 C 07 46 32.47 +35 04 16.8 z 071
1998-12-20 00:23:02 C 07 46 31.95 +35 03 57.0 z 071
1998-12-20 00:25:50 C 07 46 31.46 +35 03 36.7 z 071
1998-12-20 00:28:37 C 07 46 30.92 +35 03 15.2 z 071
1998-12-21 15:45:12 C 07 39 44.61 +29 57 36.7 b 426
1998-12-21 15:48:21 C 07 39 43.99 +29 57 10.9 b 426
1998-12-21 15:50:54 C 07 39 43.51 +29 56 50.6 b 426
1998-12-21 15:56:34 C 07 39 42.43 +29 56 02.9 b 426
1998-12-21 21:35:57 C 07 38 44.62 +29 07 36.1 z 151
1998-12-21 21:42:12 C 07 38 43.45 +29 06 44.0 z 151
1998-12-21 21:45:51 C 07 38 42.80 +29 06 12.8 z 151
1998-12-21 21:49:38 C 07 38 42.22 +29 05 39.3 z 151
1998-12-23 07:37:30 C 07 32 41.73 +24 08 31.9 z 670
1998-12-23 07:51:44 C 07 32 38.92 +24 06 21.4 z 670
1998-12-23 08:02:30 C 07 32 36.88 +24 04 42.9 z 670
1998-12-23 08:15:59 C 07 32 34.29 +24 02 39.0 z 670
1998-12-23 19:59:19 C 07 30 30.10 +22 13 08.8 z 587
1998-12-23 20:07:58 C 07 30 28.59 +22 11 50.3 z 587
1998-12-23 20:16:47 C 07 30 26.74 +22 10 27.0 540
1998-12-23 20:18:29 C 07 30 26.43 +22 10 10.6 540
1998-12-23 20:20:23 C 07 30 26.04 +22 09 53.1 540
1998-12-23 20:22:29 C 07 30 25.66 +22 09 33.5 540
1998-12-23 20:24:12 C 07 30 25.37 +22 09 17.6 540
1998-12-24 00:00:29 C 07 29 44.64 +21 35 21.1 z 910
1998-12-24 00:03:27 C 07 29 44.06 +21 34 52.4 z 910
1998-12-24 00:06:09 C 07 29 43.51 +21 34 26.8 z 910
1998-12-24 00:08:53 C 07 29 42.99 +21 34 00.9 z 910
1998-12-24 00:11:35 C 07 29 42.47 +21 33 35.2 z 910
1998-12-24 00:14:18 C 07 29 41.94 +21 33 09.6 z 910
1998-12-24 00:17:01 C 07 29 41.42 +21 32 43.2 z 910
1998-12-24 00:19:44 C 07 29 40.89 +21 32 17.8 z 910
1998-12-24 00:22:28 C 07 29 40.36 +21 31 52.0 z 910