200840 (2001 XN254)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5611027636 ± 6.74e-09
Semi-major axis (a)2.3201238807 AU ± 5.37e-09
Inclination (i)1.94289106° ± 1.21e-06
Long. of Asc. Node (Ω)264.05320698° ± 3.85e-05
Arg. of Perihelion (ω)278.72654605° ± 3.92e-05
Mean Anomaly (M)243.84662531° ± 9.77e-06
Mean Motion (n)0.2788980738°/day ± 9.68e-10
Perihelion dist (q)1.01829596 AU ± 1.58e-08
Aphelion dist (Q)3.62195180 AU ± 1.77e-08
Orbital Period3.53400176 yr ± 1.23e-08
Physical Parameters
H (abs. magnitude)17.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.376″
Uncertainty0
Orbit TypeAmor
MOID0.039477 AU
Observations Used715
Oppositions22
Arc Total1994-2025
First Observation Used1994-12-08
Last Observation Used2025-10-17
Observations (737)
Date Type RA Dec Mag Band Observatory
2013-08-08 11:14:15 C 21 29 33.878 -12 09 12.19 L F51
2013-08-08 11:34:30 C 21 29 32.829 -12 09 16.85 L F51
2013-08-30 07:55:02 C 21 05 51.169 -14 00 30.67 L F51
2013-08-30 08:15:12 C 21 05 50.397 -14 00 34.29 L F51
2013-08-30 08:35:21 C 21 05 49.599 -14 00 37.79 L F51
2015-11-13 09:14:52 C 04 32 14.03 +23 14 42.3 R G45
2015-11-13 09:23:18 C 04 32 13.63 +23 14 41.5 R G45
2015-11-13 09:31:33 C 04 32 13.18 +23 14 40.5 R G45
2015-11-13 09:31:39 C 04 32 13.24 +23 14 40.5 R G45
2015-11-13 09:39:54 C 04 32 12.79 +23 14 39.7 R G45
2015-11-13 09:40:00 C 04 32 12.79 +23 14 39.5 R G45
2015-11-13 09:48:35 C 04 32 12.37 +23 14 38.2 R G45
2015-11-13 09:48:41 C 04 32 12.35 +23 14 38.2 R G45
2015-12-01 07:54:33 C 04 07 23.02 +22 04 45.5 q 703
2015-12-01 08:11:51 C 04 07 21.80 +22 04 41.5 q 703
2015-12-01 08:20:30 C 04 07 21.08 +22 04 40.1 q 703
2015-12-01 09:26:25 C 04 07 16.81 +22 04 25.9 o 691
2015-12-01 09:30:20 C 04 07 16.55 +22 04 24.9 o 691
2015-12-01 09:34:15 C 04 07 16.29 +22 04 24.2 o 691
2015-12-03 09:16:01 C 04 04 09.43 +21 54 12.6 o 691
2015-12-03 09:20:16 C 04 04 09.13 +21 54 12.0 o 691
2015-12-03 09:24:30 C 04 04 08.85 +21 54 10.8 o 691
2015-12-06 11:09:04 C 03 59 18.270 +21 37 41.91 L F51
2015-12-06 11:28:35 C 03 59 16.950 +21 37 37.33 L F51
2015-12-06 11:48:09 C 03 59 15.626 +21 37 32.68 L F51
2015-12-09 09:16:40 C 03 54 42.77 +21 21 16.5 q G96
2015-12-09 09:20:48 C 03 54 42.48 +21 21 15.6 q G96
2015-12-09 09:24:58 C 03 54 42.22 +21 21 14.4 q G96
2015-12-09 09:29:07 C 03 54 41.92 +21 21 13.4 q G96
2015-12-13 05:26:20 C 03 48 48.964 +20 59 04.63 L F51
2015-12-13 05:44:54 C 03 48 47.767 +20 59 00.18 L F51
2015-12-13 06:22:16 C 03 48 45.347 +20 58 51.31 L F51
2015-12-13 15:09:34 C 03 48 11.84 +20 56 41.1 q D29
2015-12-13 15:50:12 C 03 48 09.25 +20 56 30.8 q D29
2015-12-29 21:20:48 C 03 27 25.95 +19 25 51.5 19.8 u J43
2015-12-29 21:20:48 C 03 27 25.95 +19 25 51.5 19.8 c A77
2015-12-29 21:30:45 C 03 27 25.50 +19 25 49.2 20.0 u J43
2015-12-29 21:30:45 C 03 27 25.50 +19 25 49.2 20.0 c A77
2015-12-29 21:40:43 C 03 27 25.07 +19 25 47.9 21.0 u J43
2015-12-29 21:40:43 C 03 27 25.07 +19 25 47.9 21.0 c A77
2015-12-29 21:50:38 C 03 27 24.65 +19 25 45.4 20.5 c A77
2015-12-29 21:50:38 C 03 27 24.65 +19 25 45.4 20.5 u J43
2016-01-02 03:15:10 C 03 24 27.67 +19 10 33.7 q G96
2016-01-02 03:23:57 C 03 24 27.34 +19 10 32.2 q G96
2016-01-02 03:32:43 C 03 24 27.02 +19 10 30.4 q G96
2016-01-02 03:41:30 C 03 24 26.70 +19 10 29.0 q G96
2016-01-03 12:27:23 C 03 23 20.08 +19 04 30.9 q D29
2016-01-03 12:53:33 C 03 23 19.24 +19 04 25.5 q D29
2016-01-08 08:07:47 C 03 20 06.285 +18 45 47.02 L F51
2016-01-08 08:11:49 C 03 20 06.181 +18 45 46.49 L F51