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
2009-10-20 15:27:25 C 02 59 41.54 -35 05 44.5 r E16
2009-10-20 15:30:42 C 02 59 41.79 -35 05 31.3 r E16
2009-10-20 15:31:48 C 02 59 41.88 -35 05 26.8 r E16
2009-10-20 15:32:55 C 02 59 41.96 -35 05 22.3 r E16
2009-10-20 15:34:01 C 02 59 42.04 -35 05 17.8 r E16
2009-10-20 15:35:09 C 02 59 42.13 -35 05 13.4 r E16
2009-10-20 15:36:14 C 02 59 42.21 -35 05 09.0 r E16
2009-10-20 15:37:29 C 02 59 42.31 -35 05 03.9 r E16
2009-10-27 00:10:37 C 03 15 21.47 -22 10 50.9 14.3 o C20
2009-10-27 22:02:55 C 03 17 38.34 -19 51 32.4 14.3 o C20
2009-10-28 00:12:16 C 03 17 48.56 -19 37 20.8 14.2 o C20
2009-10-28 05:19:29 C 03 18 23.13 -19 01 34.3 c 808
2009-10-28 05:29:30 C 03 18 23.86 -19 00 29.0 c 808
2009-10-28 05:39:29 C 03 18 24.59 -18 59 22.9 c 808
2009-10-28 22:09:11 C 03 20 05.27 -17 09 43.4 14.3 o C20
2009-10-30 05:11:30 C 03 23 14.43 -13 27 08.2 c 808
2009-10-30 05:21:29 C 03 23 15.17 -13 25 55.0 c 808
2009-10-30 05:31:30 C 03 23 15.85 -13 24 41.8 c 808
2009-11-01 23:16:14 C 03 29 53.02 -05 01 39.7 r J75
2009-11-01 23:22:04 C 03 29 53.41 -05 00 52.6 r J75
2009-11-01 23:27:53 C 03 29 53.89 -05 00 06.8 r J75
2009-11-02 19:34:19 C 03 31 53.69 -02 18 20.9 r C00
2009-11-02 19:39:50 C 03 31 54.14 -02 17 36.0 r C00
2009-11-02 19:47:07 C 03 31 54.77 -02 16 36.8 r C00
2009-11-02 19:51:50 C 03 31 55.16 -02 15 58.6 r C00
2009-11-02 19:55:25 C 03 31 55.45 -02 15 29.3 r C00
2009-11-02 19:58:49 C 03 31 55.74 -02 15 01.9 r C00
2009-11-02 20:05:09 C 03 31 56.28 -02 14 10.5 r C00
2009-11-02 20:11:48 C 03 31 56.83 -02 13 16.6 r C00
2009-11-04 00:37:51 C 03 34 36.72 +01 39 49.2 14.4 o C20
2009-11-04 00:38:58 C 03 34 36.80 +01 39 58.4 14.3 o C20
2009-11-05 22:58:51 C 03 39 04.95 +08 01 34.5 13.7 o C20
2009-11-05 22:59:57 C 03 39 05.02 +08 01 43.7 13.7 o C20
2009-11-06 21:07:54 C 03 41 15.29 +11 01 39.9 o J16
2009-11-06 21:18:24 C 03 41 16.14 +11 03 05.4 o J16
2009-11-09 22:04:56 C 03 47 51.99 +20 29 39.6 r J75
2009-11-09 22:23:32 C 03 47 53.22 +20 31 58.4 r J75
2009-11-09 22:42:08 C 03 47 54.42 +20 34 17.0 r J75
2009-11-10 21:56:12 C 03 49 56.99 +23 22 18.3 r J53
2009-11-10 21:57:33 C 03 49 57.07 +23 22 28.1 r J53
2009-11-10 21:59:14 C 03 49 57.18 +23 22 40.3 r J53
2009-11-11 00:39:14 C 03 50 05.33 +23 41 26.6 w 160
2009-11-11 00:40:22 C 03 50 05.40 +23 41 34.5 w 160
2009-11-11 00:41:31 C 03 50 05.47 +23 41 42.7 w 160
2009-11-11 00:42:40 C 03 50 05.53 +23 41 50.7 w 160
2009-11-11 00:43:49 C 03 50 05.60 +23 41 58.5 w 160
2009-11-11 05:07:38 C 03 50 34.21 +24 13 01.4 o 691
2009-11-11 05:32:25 C 03 50 35.77 +24 15 56.0 o 691
2009-11-11 05:57:13 C 03 50 37.24 +24 18 51.4 o 691
2009-11-11 06:15:14 C 03 50 37.68 +24 20 56.8 14.6 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)