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
2013-06-08 00:17:27 C 18 14 07.68 +09 11 49.6 q Z81
2013-06-08 00:31:17 C 18 14 06.23 +09 11 10.9 q C18
2013-06-08 01:08:03 C 18 14 03.30 +09 09 49.0 q Z81
2013-06-09 21:30:40 C 18 10 31.78 +07 23 00.3 o A92
2013-06-09 21:34:54 C 18 10 31.41 +07 22 49.9 o A92
2013-06-09 21:40:32 C 18 10 30.93 +07 22 36.7 o A92
2013-06-09 21:45:06 C 18 10 30.57 +07 22 25.8 o A92
2013-06-09 21:50:09 C 18 10 30.11 +07 22 13.0 o A92
2013-06-09 21:55:26 C 18 10 29.68 +07 22 00.3 o A92
2013-06-09 22:01:37 C 18 10 29.12 +07 21 45.2 o A92
2013-06-09 22:06:12 C 18 10 28.74 +07 21 34.0 o A92
2013-06-09 22:11:30 C 18 10 28.25 +07 21 21.5 o A92
2013-06-09 22:16:41 C 18 10 27.85 +07 21 08.8 o A92
2013-06-09 22:21:38 C 18 10 27.40 +07 20 56.5 o A92
2013-06-09 23:06:26 C 18 10 24.40 +07 19 11.3 q Z81
2013-06-09 23:57:05 C 18 10 20.02 +07 17 08.8 q Z81
2013-06-10 22:42:08 C 18 08 30.46 +06 21 41.8 15.3 u 089
2013-06-10 22:43:46 C 18 08 30.32 +06 21 38.0 15.3 u 089
2013-06-10 22:45:25 C 18 08 30.17 +06 21 33.7 15.2 u 089
2013-06-10 22:47:04 C 18 08 30.03 +06 21 29.6 15.2 u 089
2013-06-10 22:48:43 C 18 08 29.89 +06 21 25.6 15.3 u 089
2013-06-10 22:50:22 C 18 08 29.75 +06 21 21.7 15.2 u 089
2013-06-10 22:52:01 C 18 08 29.61 +06 21 17.5 15.3 u 089
2013-06-10 22:53:40 C 18 08 29.47 +06 21 13.7 15.1 u 089
2013-06-10 22:55:19 C 18 08 29.32 +06 21 09.5 15.1 u 089
2013-06-10 22:56:58 C 18 08 29.17 +06 21 05.5 15.2 u 089
2013-06-11 22:20:24 C 18 06 37.91 +05 23 50.3 q A13
2013-06-11 22:22:56 C 18 06 37.83 +05 23 45.3 q A13
2013-06-11 22:54:12 C 18 06 35.02 +05 22 27.8 q A13
2013-06-11 23:25:31 C 18 06 32.34 +05 21 10.9 q A13
2013-06-12 21:42:25 C 18 04 46.25 +04 26 23.8 o 639
2013-06-12 21:45:25 C 18 04 45.97 +04 26 16.3 o 639
2013-06-12 21:49:34 C 18 04 45.64 +04 26 06.0 o 639
2013-06-12 21:52:35 C 18 04 45.36 +04 25 58.9 o 639
2013-06-12 21:53:40 C 18 04 45.28 +04 25 56.2 o 639
2013-06-13 22:45:11 C 18 02 46.93 +03 24 44.7 q 104
2013-06-13 23:02:45 C 18 02 45.42 +03 24 01.4 q 104
2013-06-14 22:07:02 C 18 00 56.87 +02 27 07.2 q K20
2013-06-14 22:21:44 C 18 00 55.66 +02 26 31.3 q K20
2013-06-14 22:57:31 C 18 00 52.66 +02 25 04.2 q K20
2013-06-14 23:10:34 C 18 00 51.56 +02 24 30.8 q K20
2013-06-14 23:34:46 C 18 00 49.52 +02 23 31.1 q K20
2013-06-15 22:14:30 C 17 59 04.07 +01 27 46.6 r 006
2013-06-15 22:23:11 C 17 59 03.34 +01 27 25.1 r 006
2013-06-15 22:31:09 C 17 59 02.67 +01 27 05.6 r 006
2013-06-17 22:07:43 C 17 55 23.72 -00 29 35.2 q A13
2013-06-17 22:13:54 C 17 55 23.22 -00 29 50.0 q A13
2013-06-18 21:21:16 C 17 53 39.22 -01 26 03.3 q G34
2013-06-18 21:26:38 C 17 53 38.81 -01 26 16.7 q G34
2013-06-18 21:31:58 C 17 53 38.41 -01 26 28.8 q G34
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)