137199 (1999 KX4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2926061927 ± 3.63e-09
Semi-major axis (a)1.4573678721 AU ± 2.80e-10
Inclination (i)16.56957845° ± 6.22e-07
Long. of Asc. Node (Ω)104.87771298° ± 1.73e-06
Arg. of Perihelion (ω)76.49995727° ± 2.19e-06
Mean Anomaly (M)75.83993705° ± 9.92e-07
Mean Motion (n)0.5602198454°/day ± 1.61e-10
Perihelion dist (q)1.03093301 AU ± 5.29e-09
Aphelion dist (Q)1.88380274 AU ± 5.30e-09
Orbital Period1.75935624 yr ± 5.06e-10
Physical Parameters
H (abs. magnitude)16.97
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.196″
Uncertainty0
Orbit TypeAmor
MOID0.190752 AU
Observations Used3481
Radar Obs Used1
Gaia Obs Used105
Oppositions16
Arc Total1978-2015
First Observation Used1978-08-10
Last Observation Used2025-02-03
Observations (4268)
Date Type RA Dec Mag Band Observatory
2024-10-09 08:26:45 C 02 03 36.065 -24 06 16.49 V G96
2024-10-09 08:34:13 C 02 03 35.557 -24 06 19.94 V G96
2024-10-22 05:28:16 C 01 42 25.222 -25 42 14.76 V W68
2024-10-22 05:32:52 C 01 42 24.881 -25 42 15.77 V W68
2024-10-22 05:40:55 C 01 42 24.370 -25 42 16.13 V W68
2024-10-22 05:57:11 C 01 42 23.143 -25 42 18.94 V W68
2024-10-22 09:35:24 C 01 42 08.117 -25 42 59.36 X F51
2024-10-22 09:49:25 C 01 42 07.092 -25 43 01.47 X F51
2024-10-22 10:03:24 C 01 42 06.069 -25 43 03.54 X F51
2024-10-23 04:38:41 C 01 40 47.736 -25 45 28.40 V W68
2024-10-23 04:43:15 C 01 40 47.424 -25 45 28.87 V W68
2024-10-23 04:51:15 C 01 40 46.807 -25 45 30.46 V W68
2024-10-23 05:07:43 C 01 40 45.547 -25 45 31.86 V W68
2024-10-23 19:40:16 C 01 39 44.966 -25 47 14.06 V M22
2024-10-23 19:43:34 C 01 39 44.743 -25 47 14.14 V M22
2024-10-23 19:48:08 C 01 39 44.458 -25 47 14.17 V M22
2024-10-23 19:55:59 C 01 39 43.889 -25 47 16.40 V M22
2024-10-24 23:02:32 C 01 37 50.047 -25 49 50.02 V M22
2024-10-24 23:06:35 C 01 37 49.745 -25 49 50.63 V M22
2024-10-24 23:14:30 C 01 37 49.188 -25 49 50.81 V M22
2024-10-25 00:00:52 C 01 37 45.854 -25 49 54.34 V M22
2024-10-26 04:26:55 C 01 35 48.046 -25 51 42.05 V W68
2024-10-26 04:31:30 C 01 35 47.796 -25 51 42.01 V W68
2024-10-26 04:39:33 C 01 35 47.210 -25 51 42.48 V W68
2024-10-26 04:55:59 C 01 35 46.020 -25 51 43.45 V W68
2024-10-31 03:41:10 C 01 27 49.142 -25 49 28.74 V W68
2024-10-31 03:42:35 C 01 27 49.025 -25 49 28.85 V W68
2024-10-31 03:45:51 C 01 27 48.799 -25 49 27.95 V W68
2024-10-31 03:53:46 C 01 27 48.269 -25 49 27.26 V W68
2024-10-31 03:55:05 C 01 27 48.170 -25 49 26.98 V W68
2024-10-31 04:41:21 C 01 27 45.074 -25 49 23.48 V W68
2024-10-31 21:23:01 C 01 26 40.879 -25 47 48.88 V M22
2024-10-31 21:23:40 C 01 26 40.822 -25 47 49.13 V M22
2024-10-31 21:28:18 C 01 26 40.538 -25 47 49.45 V M22
2024-10-31 21:29:36 C 01 26 40.462 -25 47 48.23 V M22
2024-10-31 21:35:42 C 01 26 40.068 -25 47 47.54 V M22
2024-10-31 21:49:48 C 01 26 39.137 -25 47 46.21 V M22
2024-10-31 21:51:18 C 01 26 39.029 -25 47 46.36 V M22
2024-11-03 04:10:12 C 01 23 15.250 -25 40 36.52 V W68
2024-11-03 04:14:34 C 01 23 14.986 -25 40 35.36 V W68
2024-11-03 05:05:37 C 01 23 11.705 -25 40 26.33 V W68
2024-11-03 05:14:26 C 01 23 11.210 -25 40 25.75 V W68
2024-11-04 03:37:32 C 01 21 50.321 -25 36 33.08 V W68
2024-11-04 03:43:25 C 01 21 49.963 -25 36 31.54 V W68
2024-11-04 03:56:39 C 01 21 49.116 -25 36 30.17 V W68
2024-11-04 04:06:31 C 01 21 48.475 -25 36 28.12 V W68
2024-11-07 03:36:26 C 01 17 41.621 -25 20 40.49 V W68
2024-11-07 03:40:59 C 01 17 41.398 -25 20 39.34 V W68
2024-11-07 04:13:42 C 01 17 39.530 -25 20 31.02 V W68
2024-11-07 04:22:12 C 01 17 39.026 -25 20 29.44 V W68
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-05-11 08:20:00 304564740.19 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)