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
2019-12-08 11:42:20 C 07 17 19.54 +05 24 07.2 V T08
2019-12-09 12:04:07 C 07 17 20.64 +05 39 18.9 V T05
2019-12-09 12:11:39 C 07 17 20.61 +05 39 23.8 V T05
2019-12-09 12:16:41 C 07 17 20.57 +05 39 27.2 V T05
2019-12-09 12:31:35 C 07 17 20.49 +05 39 36.8 V T05
2019-12-10 10:14:35 C 07 17 19.63 +05 54 04.6 V T05
2019-12-10 10:21:02 C 07 17 19.58 +05 54 09.1 V T05
2019-12-10 10:37:40 C 07 17 19.46 +05 54 20.7 V T05
2019-12-10 10:47:06 C 07 17 19.39 +05 54 27.5 V T05
2019-12-11 00:07:57 C 07 17 16.91 +06 03 41.0 V 160
2019-12-11 00:10:40 C 07 17 16.88 +06 03 42.9 V 160
2019-12-11 00:13:09 C 07 17 16.88 +06 03 44.4 V 160
2019-12-16 11:48:41 C 07 16 00.78 +07 55 45.0 V T08
2019-12-16 11:54:02 C 07 16 00.67 +07 55 50.3 V T08
2019-12-16 12:01:26 C 07 16 00.49 +07 55 57.6 V T08
2019-12-16 12:30:11 C 07 15 59.85 +07 56 26.4 V T08
2019-12-19 09:08:35 C 07 14 38.17 +09 10 48.0 V G96
2019-12-19 09:16:01 C 07 14 37.96 +09 10 56.7 V G96
2019-12-19 09:23:27 C 07 14 37.74 +09 11 05.4 V G96
2019-12-19 09:33:02 C 07 14 37.47 +09 11 16.5 V G96
2019-12-19 11:53:52 C 07 14 34.32 +09 14 07.7 V T08
2019-12-19 11:58:32 C 07 14 34.18 +09 14 13.2 V T08
2019-12-19 12:34:14 C 07 14 33.09 +09 14 55.1 V T08
2019-12-21 14:24:12 C 07 13 12.99 +10 17 37.6 q E89
2019-12-21 14:28:03 C 07 13 12.86 +10 17 42.9 q E89
2019-12-21 14:31:51 C 07 13 12.72 +10 17 47.6 q E89
2019-12-21 14:35:45 C 07 13 12.59 +10 17 52.9 q E89
2019-12-21 14:40:49 C 07 13 12.40 +10 17 59.4 q E89
2019-12-21 14:44:50 C 07 13 12.26 +10 18 04.7 q E89
2019-12-24 03:18:26 C 07 11 12.49 +11 43 25.9 q 834
2019-12-24 04:14:06 C 07 11 10.09 +11 44 49.4 q 834
2019-12-27 14:15:44 C 07 07 42.55 +13 58 49.5 q E89
2019-12-27 14:20:30 C 07 07 42.32 +13 58 57.4 q E89
2019-12-27 14:25:17 C 07 07 42.04 +13 59 05.9 q E89
2019-12-27 14:29:59 C 07 07 41.79 +13 59 14.4 q E89
2019-12-27 14:34:41 C 07 07 41.56 +13 59 21.7 q E89
2019-12-27 14:38:21 C 07 07 41.37 +13 59 28.0 q E89
2019-12-27 14:42:55 C 07 07 41.13 +13 59 36.2 q E89
2019-12-27 14:46:07 C 07 07 40.96 +13 59 41.9 q E89
2019-12-29 00:54:01 C 07 06 00.34 +15 01 16.0 V 160
2019-12-29 00:56:59 C 07 06 00.19 +15 01 21.6 V 160
2019-12-29 00:59:56 C 07 06 00.01 +15 01 27.0 V 160
2019-12-30 00:36:38 C 07 04 45.05 +15 46 46.1 q 160
2019-12-30 00:39:35 C 07 04 44.89 +15 46 51.3 q 160
2019-12-30 00:42:32 C 07 04 44.69 +15 46 57.2 q 160
2019-12-31 01:48:03 C 07 03 19.82 +16 37 08.7 V 160
2019-12-31 01:51:01 C 07 03 19.63 +16 37 14.5 V 160
2019-12-31 01:53:59 C 07 03 19.44 +16 37 20.7 V 160
2020-01-05 21:10:35 C 06 54 03.93 +21 54 17.0 U K83
2020-01-05 21:16:22 C 06 54 03.43 +21 54 31.4 U K83
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)