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
2009-11-25 06:49:14 C 04 14 52.57 +50 01 56.0 15.5 c 704
2009-11-25 07:07:27 C 04 14 53.19 +50 02 42.8 15.5 c 704
2009-11-25 07:25:45 C 04 14 53.77 +50 03 29.9 15.4 c 704
2009-11-28 03:24:49 C 04 18 44.51 +52 37 48.9 15.8 o C20
2009-11-28 03:25:56 C 04 18 44.58 +52 37 51.1 15.6 o C20
2009-11-30 21:03:28 C 04 22 24.89 +54 35 59.7 o J16
2009-11-30 21:12:16 C 04 22 25.29 +54 36 14.1 o J16
2009-11-30 21:39:06 C 04 22 26.29 +54 36 58.8 o J16
2009-11-30 21:54:00 C 04 22 26.93 +54 37 23.4 o J16
2009-12-04 05:13:19 C 04 26 24.72 +56 25 31.6 c H53
2009-12-04 05:18:21 C 04 26 24.86 +56 25 37.6 c H53
2009-12-04 05:23:21 C 04 26 24.94 +56 25 43.2 c H53
2009-12-04 05:28:20 C 04 26 25.10 +56 25 49.0 c H53
2009-12-04 05:33:19 C 04 26 25.20 +56 25 55.0 c H53
2009-12-04 05:38:21 C 04 26 25.41 +56 26 00.8 c H53
2009-12-05 03:03:15 C 04 27 22.75 +56 48 55.7 16.3 o C20
2009-12-05 03:04:21 C 04 27 22.79 +56 48 56.6 15.9 o C20
2009-12-06 23:55:45 C 04 29 30.24 +57 32 11.2 16.8 o C20
2009-12-09 00:07:24 C 04 31 41.78 +58 09 11.5 16.4 o C20
2009-12-09 00:08:32 C 04 31 41.80 +58 09 12.1 16.5 o C20
2009-12-11 02:57:35 C 04 34 03.52 +58 39 30.2 c H53
2009-12-11 03:00:45 C 04 34 03.63 +58 39 32.3 c H53
2009-12-11 03:03:46 C 04 34 03.65 +58 39 34.4 c H53
2009-12-11 03:06:46 C 04 34 03.77 +58 39 36.0 c H53
2009-12-11 03:09:46 C 04 34 03.86 +58 39 38.0 c H53
2009-12-11 03:12:47 C 04 34 03.95 +58 39 39.6 c H53
2009-12-13 21:06:31 C 04 36 55.48 +59 06 34.0 17.3 o 084
2009-12-13 21:08:05 C 04 36 55.52 +59 06 34.7 17.1 o 084
2009-12-14 04:39:35 C 04 37 12.85 +59 08 28.5 17.1 o 084
2009-12-16 23:49:16 C 04 40 11.16 +59 23 27.1 17.2 o C20
2009-12-16 23:51:24 C 04 40 11.27 +59 23 27.5 17.2 o C20
2009-12-17 18:49:15 C 04 41 06.77 +59 25 50.6 17.1 o C20
2009-12-17 18:51:22 C 04 41 06.84 +59 25 50.9 16.9 o C20
2009-12-19 19:02:59 C 04 43 19.38 +59 28 00.7 16.9 o 084
2009-12-19 19:06:15 C 04 43 19.49 +59 28 00.6 16.6 o 084
2009-12-19 23:45:21 C 04 43 31.61 +59 28 20.5 u J51
2009-12-19 23:59:38 C 04 43 32.02 +59 28 20.4 u J51
2009-12-20 00:12:19 C 04 43 32.39 +59 28 20.2 u J51
2010-01-06 01:17:55 C 05 05 30.97 +57 32 39.3 17.9 u C20
2010-01-06 01:20:02 C 05 05 31.15 +57 32 38.0 17.7 u C20
2010-01-07 19:42:00 C 05 08 10.06 +57 12 09.7 17.9 u C20
2010-01-07 19:44:07 C 05 08 10.17 +57 12 08.7 17.8 u C20
2010-01-08 19:43:40 C 05 09 40.68 +56 59 55.6 17.7 u C20
2010-01-08 19:45:47 C 05 09 40.77 +56 59 54.5 17.7 u C20
2010-01-08 20:09:53 C 05 09 42.60 +56 59 36.5 18.3 u 084
2010-01-08 20:13:11 C 05 09 42.78 +56 59 34.2 18.0 u 084
2010-01-09 01:00:48 C 05 09 59.00 +56 56 57.7 17.9 u C20
2010-01-09 01:02:55 C 05 09 59.12 +56 56 56.4 18.0 u C20
2010-01-09 02:05:37 C 05 10 03.72 +56 56 21.7 17.5 u 084
2010-01-09 19:26:22 C 05 11 11.46 +56 47 32.8 18.8 u C20
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)