217807 (2000 XK44)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3853678080 ± 3.72e-09
Semi-major axis (a)1.7242325547 AU ± 1.39e-09
Inclination (i)11.23606881° ± 2.47e-06
Long. of Asc. Node (Ω)48.09553167° ± 3.14e-06
Arg. of Perihelion (ω)347.67475706° ± 6.37e-06
Mean Anomaly (M)34.48857405° ± 3.76e-06
Mean Motion (n)0.4353299182°/day ± 5.27e-10
Perihelion dist (q)1.05976883 AU ± 6.46e-09
Aphelion dist (Q)2.38869627 AU ± 6.69e-09
Orbital Period2.26409039 yr ± 2.74e-09
Physical Parameters
H (abs. magnitude)18.36
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.320″
Uncertainty0
Orbit TypeAmor
MOID0.071629 AU
Observations Used494
Radar Obs Used6
Oppositions19
Arc Total1975-2009
First Observation Used1975-07-16
Last Observation Used2026-01-01
Observations (522)
Date Type RA Dec Mag Band Observatory
2019-01-27 03:36:27 C 02 50 56.35 +36 46 39.5 V 703
2020-06-21 07:13:56 C 15 38 58.432 -28 30 59.69 U F51
2020-06-21 07:31:38 C 15 38 57.406 -28 30 58.75 U F51
2020-06-21 07:49:21 C 15 38 56.373 -28 30 57.98 U F51
2020-06-21 08:07:04 C 15 38 55.335 -28 30 56.92 U F51
2022-05-02 15:54:52 C 14 30 37.85 -12 02 14.7 V D29
2022-05-02 16:35:36 C 14 30 35.29 -12 02 10.9 V D29
2022-05-04 07:37:29 C 14 28 12.907 -11 57 52.16 V G96
2022-05-04 07:44:53 C 14 28 12.338 -11 57 51.05 V G96
2022-05-04 07:52:19 C 14 28 11.874 -11 57 49.46 V G96
2022-05-04 07:59:42 C 14 28 11.377 -11 57 49.54 V G96
2024-02-18 13:40:05 C 13 52 31.748 +01 06 33.66 X F52
2024-02-18 13:56:05 C 13 52 31.578 +01 06 35.82 X F52
2024-02-18 14:12:08 C 13 52 31.406 +01 06 37.77 X F52
2024-02-18 14:28:17 C 13 52 31.223 +01 06 39.74 X F52
2024-03-09 18:48:54 C 13 40 20.768 +02 39 38.70 O18
2024-03-09 19:48:01 C 13 40 18.258 +02 39 52.50 O18
2024-03-20 06:19:49 C 13 28 25.432 +03 40 56.39 V G96
2024-03-20 06:28:47 C 13 28 24.913 +03 40 59.34 V G96
2024-03-20 06:37:45 C 13 28 24.427 +03 41 01.79 V G96
2024-03-20 06:46:44 C 13 28 23.941 +03 41 04.16 V G96
2024-03-29 16:48:09 C 13 15 31.500 +04 33 40.15 O18
2024-03-29 17:43:28 C 13 15 28.119 +04 33 52.27 O18
2024-03-29 18:39:12 C 13 15 24.710 +04 34 04.30 O18
2024-03-30 17:17:56 C 13 14 03.565 +04 38 53.99 O18
2024-03-30 18:13:38 C 13 14 00.149 +04 39 05.57 O18
2024-03-31 17:29:45 C 13 12 36.294 +04 43 56.41 O18
2024-03-31 18:25:31 C 13 12 32.853 +04 44 07.84 O18
2024-04-01 08:45:57 C 13 11 41.225 +04 47 04.96 X F51
2024-04-01 09:01:59 C 13 11 40.234 +04 47 08.19 X F51
2024-04-01 09:18:08 C 13 11 39.227 +04 47 11.39 X F51
2024-04-01 09:34:14 C 13 11 38.232 +04 47 14.87 X F51
2024-04-03 16:01:04 C 13 08 20.691 +04 57 50.40 O18
2024-04-03 18:36:30 C 13 08 11.033 +04 58 19.79 O18
2024-04-06 15:57:01 C 13 03 59.741 +05 10 39.25 O18
2024-04-06 18:28:51 C 13 03 50.347 +05 11 04.79 O18
2024-04-07 15:59:32 C 13 02 32.962 +05 14 35.90 O18
2024-04-07 18:35:57 C 13 02 23.365 +05 15 01.08 O18
2024-04-08 10:02:47 C 13 01 27.975 +05 17 28.44 X F51
2024-04-08 10:21:00 C 13 01 26.852 +05 17 31.19 X F51
2024-04-08 10:39:15 C 13 01 25.742 +05 17 34.02 X F51
2024-04-12 07:47:03 C 12 55 56.356 +05 30 26.75 V G96
2024-04-12 07:54:31 C 12 55 55.902 +05 30 27.86 V G96
2024-04-12 08:02:01 C 12 55 55.492 +05 30 29.05 V G96
2024-05-06 07:39:58 C 12 29 19.468 +05 38 36.15 X F52
2024-05-06 07:57:06 C 12 29 18.881 +05 38 34.35 X F52
2024-05-06 08:14:11 C 12 29 18.335 +05 38 32.86 X F52
2024-05-06 08:31:14 C 12 29 17.755 +05 38 31.21 X F52
2025-09-23 21:19:38 C 07 50 37.411 +23 06 27.32 W O18
2025-09-23 21:25:56 C 07 50 38.430 +23 06 28.25 W O18
Radar Observations (6)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2009-11-08 05:16:00 75831227.86 1 us 2380 -1 -1
2009-11-08 05:16:00 -30037.1932 0.1 Hz 2380 -1 -1
2009-11-09 04:10:00 76980677.61 1 us 2380 -1 -1
2009-11-09 04:10:00 -35188.4707 0.05 Hz 2380 -1 -1
2009-11-10 04:13:00 78443184.3 1 us 2380 -1 -1
2009-11-10 04:13:00 -42421.6673 0.05 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)