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
2009-11-11 06:33:01 C 03 50 38.69 +24 23 01.4 14.6 c 704
2009-11-11 06:50:50 C 03 50 39.73 +24 25 05.9 14.6 c 704
2009-11-11 07:08:36 C 03 50 40.73 +24 27 09.9 14.6 c 704
2009-11-11 07:26:23 C 03 50 41.74 +24 29 13.8 14.6 c 704
2009-11-11 23:14:17 C 03 52 02.81 +26 16 50.1 o B75
2009-11-11 23:15:08 C 03 52 02.86 +26 16 55.7 o B75
2009-11-11 23:15:53 C 03 52 02.90 +26 17 00.8 o B75
2009-11-12 22:56:13 C 03 54 02.76 +28 52 04.4 r J75
2009-11-12 23:13:11 C 03 54 03.74 +28 53 53.6 r J75
2009-11-12 23:30:12 C 03 54 04.70 +28 55 42.6 r J75
2009-11-14 19:36:58 C 03 57 29.64 +33 20 53.2 m 355
2009-11-14 19:37:10 C 03 57 29.63 +33 20 54.3 m 355
2009-11-14 19:37:35 C 03 57 29.65 +33 20 56.4 m 355
2009-11-14 19:37:47 C 03 57 29.64 +33 20 57.5 m 355
2009-11-14 19:38:10 C 03 57 29.69 +33 20 59.8 m 355
2009-11-14 19:38:35 C 03 57 29.70 +33 21 02.3 m 355
2009-11-14 19:38:59 C 03 57 29.74 +33 21 04.6 m 355
2009-11-19 09:15:54 C 04 05 40.38 +42 15 49.8 r 703
2009-11-19 09:25:58 C 04 05 40.77 +42 16 30.1 r 703
2009-11-19 09:35:42 C 04 05 41.24 +42 17 09.0 r 703
2009-11-19 09:45:31 C 04 05 41.67 +42 17 48.1 r 703
2009-11-19 19:04:05 C 04 06 28.58 +42 54 44.7 c 127
2009-11-19 19:06:36 C 04 06 28.75 +42 54 55.0 c 127
2009-11-19 19:09:07 C 04 06 28.90 +42 55 05.3 c 127
2009-11-20 07:49:54 C 04 07 15.99 +43 45 26.0 r 703
2009-11-20 07:58:49 C 04 07 16.35 +43 46 00.1 r 703
2009-11-20 08:07:43 C 04 07 16.68 +43 46 33.6 r 703
2009-11-20 08:16:33 C 04 07 17.04 +43 47 07.2 r 703
2009-11-20 20:08:06 C 04 08 09.45 +44 31 11.4 o A92
2009-11-20 20:13:24 C 04 08 09.70 +44 31 31.2 o A92
2009-11-20 20:21:27 C 04 08 10.12 +44 32 02.0 o A92
2009-11-20 20:27:59 C 04 08 10.45 +44 32 26.7 o A92
2009-11-20 20:30:45 C 04 08 10.54 +44 32 36.7 o A92
2009-11-20 21:18:17 C 04 08 14.45 +44 35 14.9 w J93
2009-11-20 21:21:36 C 04 08 14.65 +44 35 27.9 w J93
2009-11-20 21:24:55 C 04 08 14.76 +44 35 39.9 w J93
2009-11-22 04:46:40 C 04 10 11.80 +46 24 14.8 15.6 r 084
2009-11-22 04:48:15 C 04 10 11.91 +46 24 20.2 15.3 r 084
2009-11-22 05:34:33 C 04 10 21.72 +46 27 57.9 r 703
2009-11-22 05:42:25 C 04 10 22.04 +46 28 25.1 r 703
2009-11-22 05:52:58 C 04 10 22.44 +46 29 00.6 r 703
2009-11-22 06:00:48 C 04 10 22.76 +46 29 27.1 r 703
2009-11-23 22:46:18 C 04 12 56.81 +48 34 24.6 w J93
2009-11-23 22:47:47 C 04 12 56.88 +48 34 29.0 w J93
2009-11-23 22:49:15 C 04 12 56.94 +48 34 33.2 w J93
2009-11-25 00:28:50 C 04 14 30.30 +49 45 33.1 w J51
2009-11-25 00:36:10 C 04 14 30.54 +49 45 52.5 w J51
2009-11-25 00:43:30 C 04 14 30.77 +49 46 12.0 w J51
2009-11-25 06:12:44 C 04 14 51.36 +50 00 21.3 15.2 c 704
2009-11-25 06:31:00 C 04 14 51.97 +50 01 08.7 15.5 c 704
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)