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
2018-12-27 07:07:33 C 00 36 53.61 +19 48 13.0 V T05
2018-12-27 07:20:24 C 00 36 55.78 +19 48 39.3 V T05
2018-12-30 18:51:54 C 00 51 36.02 +22 35 18.8 q 160
2018-12-30 18:55:56 C 00 51 36.67 +22 35 26.3 q 160
2018-12-30 19:00:00 C 00 51 37.39 +22 35 33.5 q 160
2019-01-02 19:08:39 C 01 04 26.46 +24 48 48.0 q 160
2019-01-02 19:12:24 C 01 04 27.17 +24 48 55.1 q 160
2019-01-02 19:16:09 C 01 04 27.80 +24 49 01.4 q 160
2019-01-03 19:15:29 C 01 08 45.28 +25 31 04.5 q 160
2019-01-03 19:18:57 C 01 08 45.89 +25 31 11.1 q 160
2019-01-03 19:22:29 C 01 08 46.52 +25 31 15.9 q 160
2019-01-04 07:09:35 C 01 10 52.95 +25 51 38.7 V T05
2019-01-04 07:21:40 C 01 10 55.05 +25 51 58.0 V T05
2019-01-04 07:33:49 C 01 10 57.15 +25 52 19.5 V T05
2019-01-04 07:46:00 C 01 10 59.32 +25 52 37.9 V T05
2019-01-05 03:19:56 C 01 14 30.76 +26 25 35.3 V 703
2019-01-05 03:28:10 C 01 14 32.21 +26 25 49.4 V 703
2019-01-05 03:36:24 C 01 14 33.67 +26 26 02.3 V 703
2019-01-05 03:44:38 C 01 14 35.12 +26 26 16.4 V 703
2019-01-05 19:09:55 C 01 17 21.98 +26 51 39.4 q 160
2019-01-06 06:27:50 C 01 19 24.065 +27 10 08.47 U F51
2019-01-06 06:43:48 C 01 19 26.861 +27 10 33.96 U F51
2019-01-06 06:59:36 C 01 19 29.640 +27 10 59.13 U F51
2019-01-06 07:15:25 C 01 19 32.417 +27 11 24.26 U F51
2019-01-08 07:17:55 C 01 28 14.12 +28 26 34.7 V T05
2019-01-08 07:20:58 C 01 28 14.70 +28 26 39.3 V T05
2019-01-08 07:42:25 C 01 28 18.42 +28 27 10.9 V T05
2019-01-08 07:45:11 C 01 28 19.00 +28 27 15.7 V T05
2019-01-08 07:55:15 C 01 28 20.73 +28 27 30.5 V T05
2019-01-12 03:27:35 C 01 45 01.67 +30 38 16.5 V 703
2019-01-12 03:35:08 C 01 45 03.03 +30 38 25.6 V 703
2019-01-12 03:50:12 C 01 45 05.75 +30 38 46.0 V 703
2019-01-12 06:53:38 C 01 45 39.208 +30 42 55.05 U F51
2019-01-12 07:02:40 C 01 45 40.83 +30 43 07.5 V T05
2019-01-12 07:09:40 C 01 45 42.069 +30 43 16.16 U F51
2019-01-12 07:13:00 C 01 45 42.67 +30 43 20.7 V T05
2019-01-12 07:25:28 C 01 45 44.89 +30 43 36.8 V T05
2019-01-12 07:25:42 C 01 45 44.925 +30 43 37.15 U F51
2019-01-12 07:38:27 C 01 45 47.21 +30 43 53.9 V T05
2019-01-12 07:42:46 C 01 45 47.971 +30 43 59.55 U F51
2019-01-23 06:05:48 C 02 33 53.930 +35 31 58.81 U F51
2019-01-23 06:23:18 C 02 33 57.051 +35 32 13.74 U F51
2019-01-23 06:40:44 C 02 34 00.158 +35 32 28.82 U F51
2019-01-23 06:58:17 C 02 34 03.283 +35 32 43.82 U F51
2019-01-25 04:47:46 C 02 42 25.11 +36 10 55.5 V 703
2019-01-25 04:56:02 C 02 42 26.52 +36 11 01.5 V 703
2019-01-25 05:04:19 C 02 42 28.03 +36 11 07.8 V 703
2019-01-25 05:12:36 C 02 42 29.59 +36 11 13.9 V 703
2019-01-27 03:10:28 C 02 50 51.71 +36 46 21.1 V 703
2019-01-27 03:19:05 C 02 50 53.27 +36 46 26.9 V 703
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)