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
2025-09-23 21:32:19 C 07 50 39.467 +23 06 28.91 W O18
2025-10-29 20:45:50 C 09 55 35.128 +22 11 36.09 W O18
2025-10-29 21:59:10 C 09 55 44.036 +22 11 24.64 W O18
2025-11-03 11:33:54 C 10 08 52.228 +21 52 56.60 V G96
2025-11-03 11:42:47 C 10 08 53.228 +21 52 55.13 V G96
2025-11-03 11:51:39 C 10 08 54.272 +21 52 53.51 V G96
2025-11-15 12:32:18 C 10 40 25.662 +21 06 03.53 V G96
2025-11-15 12:39:11 C 10 40 26.335 +21 06 02.20 V G96
2025-11-15 12:46:02 C 10 40 27.016 +21 06 01.58 V G96
2025-11-15 12:52:54 C 10 40 27.714 +21 06 00.32 V G96
2025-12-06 13:33:25 C 11 24 18.122 +20 22 01.47 X F51
2025-12-06 13:40:57 C 11 24 18.634 +20 22 01.54 X F51
2025-12-06 13:48:30 C 11 24 19.181 +20 22 01.55 X F51
2025-12-06 13:56:03 C 11 24 19.717 +20 22 01.40 X F51
2025-12-08 13:33:04 C 11 27 40.666 +20 21 58.14 X F51
2025-12-08 13:42:27 C 11 27 41.295 +20 21 58.40 X F51
2025-12-08 13:51:50 C 11 27 41.926 +20 21 58.72 X F51
2025-12-08 14:01:12 C 11 27 42.575 +20 21 58.92 X F51
2026-01-01 12:33:47 C 11 55 31.841 +21 40 59.02 X F52
2026-01-01 12:44:03 C 11 55 32.083 +21 41 01.95 X F52
2026-01-01 12:54:26 C 11 55 32.338 +21 41 04.83 X F52
2026-01-01 13:04:49 C 11 55 32.579 +21 41 07.70 X F52
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)