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
1998-12-24 00:25:10 C 07 29 39.84 +21 31 26.4 z 910
1998-12-24 02:16:22 C 07 29 18.15 +21 13 44.1 z 104
1998-12-24 02:17:59 C 07 29 17.83 +21 13 29.4 z 104
1998-12-24 02:21:59 C 07 29 17.04 +21 12 50.4 z 104
1998-12-24 02:23:40 C 07 29 16.68 +21 12 34.5 z 104
1998-12-24 02:33:07 C 07 29 14.07 +21 10 54.5 z 121
1998-12-24 02:36:08 C 07 29 13.52 +21 10 25.9 z 121
1998-12-24 02:39:08 C 07 29 12.97 +21 09 57.1 z 121
1998-12-24 04:55:22 C 07 28 47.93 +20 48 14.1 z 104
1998-12-24 04:57:39 C 07 28 47.53 +20 47 51.9 z 104
1998-12-24 04:59:35 C 07 28 47.19 +20 47 33.5 z 104
1998-12-25 14:10:12 C 07 22 51.45 +15 21 17.5 z 428
1998-12-25 14:11:59 C 07 22 51.08 +15 20 58.9 z 428
1998-12-25 14:13:29 C 07 22 50.80 +15 20 43.9 z 428
1998-12-25 14:15:00 C 07 22 50.50 +15 20 27.9 z 428
1998-12-25 14:20:36 C 07 22 49.39 +15 19 31.4 z 428
1998-12-25 14:22:11 C 07 22 49.08 +15 19 15.7 z 428
1998-12-25 14:23:45 C 07 22 48.75 +15 18 59.7 z 428
1998-12-25 19:01:56 C 07 22 00.79 +14 30 26.5 540
1998-12-25 19:03:43 C 07 22 00.43 +14 30 07.5 540
1998-12-25 19:05:32 C 07 22 00.12 +14 29 50.3 540
1998-12-25 19:10:00 C 07 21 59.32 +14 29 05.1 540
1998-12-26 00:49:57 C 07 20 54.59 +13 31 19.1 z 151
1998-12-26 00:53:32 C 07 20 53.94 +13 30 41.7 z 151
1998-12-26 00:55:41 C 07 20 53.51 +13 30 19.1 z 151
1998-12-26 18:54:41 C 07 17 41.19 +10 24 16.1 540
1998-12-26 18:56:27 C 07 17 41.02 +10 23 55.8 540
1998-12-26 23:26:14 C 07 16 50.54 +09 37 16.8 z 620
1998-12-26 23:29:04 C 07 16 49.98 +09 36 47.3 z 620
1998-12-26 23:38:55 C 07 16 48.06 +09 35 04.8 z 620
1998-12-26 23:50:34 C 07 16 45.79 +09 33 03.7 z 620
1998-12-27 12:29:01 C 07 14 30.02 +07 21 49.1 z 428
1998-12-27 12:30:09 C 07 14 29.78 +07 21 37.6 z 428
1998-12-27 12:32:24 C 07 14 29.37 +07 21 13.9 z 428
1998-12-27 12:33:42 C 07 14 29.09 +07 20 59.8 z 428
1998-12-28 16:17:16 C 07 09 26.87 +02 28 35.4 z 402
1998-12-28 16:19:16 C 07 09 26.48 +02 28 14.6 z 402
1998-12-28 16:21:15 C 07 09 26.08 +02 27 53.3 z 402
1998-12-28 20:26:02 C 07 08 45.28 +01 44 58.5 z 151
1998-12-28 20:30:50 C 07 08 44.16 +01 44 11.6 z 151
1998-12-28 20:38:51 C 07 08 42.87 +01 42 45.4 z 151
1998-12-28 20:41:08 C 07 08 42.50 +01 42 20.8 z 151
1998-12-28 20:43:04 C 07 08 42.06 +01 42 01.3 z 151
1998-12-29 20:38:17 C 07 04 25.85 -02 26 12.9 540
1998-12-29 20:40:12 C 07 04 25.48 -02 26 32.6 540
1998-12-29 20:42:03 C 07 04 25.11 -02 26 51.2 540
1998-12-30 22:27:40 C 06 59 51.07 -06 47 28.3 046
1998-12-30 22:29:39 C 06 59 50.70 -06 47 48.6 046
1998-12-30 22:33:56 C 06 59 49.90 -06 48 31.3 046
1998-12-30 22:35:59 C 06 59 49.50 -06 48 51.2 046