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
2022-08-29 02:31:39 C 22 59 50.345 -36 32 23.39 V W68
2022-08-29 02:34:16 C 22 59 50.105 -36 32 25.26 V W68
2022-08-29 03:10:48 C 22 59 47.479 -36 32 47.51 V W68
2022-08-29 03:39:53 C 22 59 45.365 -36 33 06.16 V W68
2022-08-29 09:08:38 C 22 59 22.027 -36 36 28.93 U F52
2022-08-29 09:21:29 C 22 59 21.070 -36 36 36.67 U F52
2022-08-29 09:47:09 C 22 59 19.165 -36 36 52.08 U F52
2022-08-31 05:23:22 C 22 56 12.614 -37 01 28.56 V W68
2022-08-31 05:38:50 C 22 56 11.388 -37 01 36.73 V W68
2022-08-31 05:43:58 C 22 56 11.038 -37 01 39.14 V W68
2022-08-31 05:51:39 C 22 56 10.435 -37 01 43.97 V W68
2022-09-01 21:12:31 C 22 53 22.579 -37 22 07.75 V M22
2022-09-01 21:17:01 C 22 53 22.183 -37 22 10.67 V M22
2022-09-01 21:22:11 C 22 53 21.862 -37 22 13.01 V M22
2022-09-01 21:45:07 C 22 53 20.141 -37 22 24.31 V M22
2022-09-03 05:31:39 C 22 51 04.313 -37 37 33.82 V W68
2022-09-03 05:36:26 C 22 51 04.025 -37 37 35.83 V W68
2022-09-03 05:44:13 C 22 51 03.386 -37 37 38.68 V W68
2022-09-03 05:59:22 C 22 51 02.244 -37 37 46.20 V W68
2022-09-04 03:04:28 C 22 49 33.367 -37 47 08.16 V W68
2022-09-04 03:07:03 C 22 49 33.146 -37 47 09.78 V W68
2022-09-04 03:14:25 C 22 49 32.626 -37 47 12.66 V W68
2022-09-04 03:22:50 C 22 49 32.074 -37 47 14.35 V W68
2022-09-05 23:32:53 C 22 46 26.047 -38 05 11.40 V M22
2022-09-05 23:37:25 C 22 46 25.783 -38 05 12.48 V M22
2022-09-05 23:48:32 C 22 46 24.902 -38 05 17.34 V M22
2022-09-06 00:04:20 C 22 46 23.758 -38 05 22.63 V M22
2022-09-06 02:05:25 C 22 46 16.020 -38 06 08.57 V W68
2022-09-06 02:08:01 C 22 46 15.946 -38 06 09.36 V W68
2022-09-06 02:13:16 C 22 46 15.468 -38 06 11.52 V W68
2022-09-06 02:25:58 C 22 46 14.546 -38 06 16.20 V W68
2022-09-14 01:02:36 C 22 33 45.13 -38 56 53.6 V W94
2022-09-14 01:09:28 C 22 33 44.67 -38 56 54.3 V W94
2022-09-14 02:23:58 C 22 33 39.52 -38 57 13.6 V W94
2022-09-19 04:27:24 C 22 26 45.173 -39 08 23.86 V W68
2022-09-19 04:32:06 C 22 26 44.938 -39 08 24.11 V W68
2022-09-19 04:39:53 C 22 26 44.508 -39 08 24.36 V W68
2022-09-19 05:01:27 C 22 26 43.337 -39 08 24.36 V W68
2022-09-19 20:26:45 C 22 25 55.994 -39 08 45.74 V M22
2022-09-19 20:30:00 C 22 25 55.793 -39 08 46.03 V M22
2022-09-19 20:34:33 C 22 25 55.610 -39 08 45.49 V M22
2022-09-19 21:12:19 C 22 25 53.498 -39 08 46.03 V M22
2022-09-20 07:45:45 C 22 25 21.718 -39 08 58.61 U F52
2022-09-20 07:57:34 C 22 25 21.091 -39 08 58.74 U F52
2022-09-20 08:09:25 C 22 25 20.455 -39 08 58.91 U F52
2022-09-20 08:21:16 C 22 25 19.827 -39 08 59.00 U F52
2022-09-22 02:25:21 C 22 23 17.580 -39 08 12.08 V W68
2022-09-22 02:27:18 C 22 23 17.465 -39 08 12.37 V W68
2022-09-22 02:31:50 C 22 23 17.261 -39 08 12.77 V W68
2022-09-22 02:44:51 C 22 23 16.625 -39 08 11.33 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)