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
2013-02-27 22:33:08 C 17 02 45.93 +52 03 56.2 q C73
2013-02-27 22:34:18 C 17 02 46.15 +52 03 55.7 q C73
2013-02-27 22:35:27 C 17 02 46.55 +52 03 55.3 q C73
2013-02-27 22:36:37 C 17 02 46.61 +52 03 54.4 q C73
2013-02-27 22:37:46 C 17 02 46.88 +52 03 53.6 q C73
2013-02-27 22:38:55 C 17 02 47.12 +52 03 52.7 q C73
2013-02-27 22:39:30 C 17 02 47.22 +52 03 52.4 q C73
2013-02-27 22:40:04 C 17 02 47.37 +52 03 52.1 q C73
2013-03-04 03:44:29 C 17 21 54.52 +50 58 36.2 c A24
2013-03-04 03:45:31 C 17 21 54.69 +50 58 35.3 c A24
2013-03-04 03:47:37 C 17 21 55.00 +50 58 33.7 c A24
2013-03-04 03:48:39 C 17 21 55.23 +50 58 33.7 c A24
2013-03-04 04:46:36 C 17 22 04.76 +50 57 55.8 c A24
2013-03-04 04:47:39 C 17 22 04.87 +50 57 56.1 c A24
2013-03-04 04:49:42 C 17 22 05.24 +50 57 54.7 c A24
2013-03-04 04:50:45 C 17 22 05.39 +50 57 53.8 c A24
2013-03-05 03:27:57 C 17 25 56.96 +50 42 35.7 c A24
2013-03-05 03:29:00 C 17 25 57.09 +50 42 35.2 c A24
2013-03-08 03:27:23 C 17 37 16.00 +49 53 15.6 o B67
2013-03-08 03:35:01 C 17 37 17.07 +49 53 10.8 o B67
2013-03-08 03:41:55 C 17 37 18.04 +49 53 06.2 o B67
2013-03-14 21:12:40 C 17 58 21.24 +48 00 13.4 r 168
2013-03-14 21:15:05 C 17 58 21.49 +48 00 11.6 r 168
2013-03-14 22:01:50 C 17 58 26.77 +47 59 41.3 r 168
2013-03-14 22:04:25 C 17 58 27.03 +47 59 40.0 r 168
2013-03-22 03:41:46 C 18 15 54.65 +45 58 09.4 c A24
2013-03-22 03:42:48 C 18 15 54.72 +45 58 08.7 c A24
2013-03-23 04:14:00 C 18 18 02.65 +45 41 01.6 u I89
2013-03-23 04:15:40 C 18 18 02.78 +45 41 00.4 u I89
2013-03-23 04:17:12 C 18 18 02.90 +45 40 59.6 u I89
2013-03-23 04:18:50 C 18 18 03.02 +45 40 58.5 u I89
2013-03-23 04:20:27 C 18 18 03.14 +45 40 57.6 u I89
2013-03-23 04:22:03 C 18 18 03.29 +45 40 56.3 u I89
2013-03-23 04:29:59 C 18 18 03.88 +45 40 51.2 u I89
2013-03-23 04:31:41 C 18 18 04.02 +45 40 49.7 u I89
2013-03-23 04:33:17 C 18 18 04.13 +45 40 48.7 u I89
2013-03-23 04:34:54 C 18 18 04.26 +45 40 47.7 u I89
2013-03-23 04:36:33 C 18 18 04.41 +45 40 46.6 u I89
2013-03-23 04:38:11 C 18 18 04.51 +45 40 45.6 u I89
2013-03-31 03:06:31 C 18 32 19.51 +43 27 38.2 c J19
2013-03-31 03:15:59 C 18 32 20.08 +43 27 31.6 c J19
2013-03-31 03:25:25 C 18 32 20.65 +43 27 25.6 c J19
2013-03-31 03:34:53 C 18 32 21.18 +43 27 19.2 c J19
2013-03-31 03:44:21 C 18 32 21.72 +43 27 13.1 c J19
2013-03-31 03:53:47 C 18 32 22.29 +43 27 06.8 c J19
2013-03-31 04:01:40 C 18 32 22.74 +43 27 01.6 c J19
2013-04-02 14:34:28 C 18 36 01.448 +42 46 17.64 L F51
2013-04-02 14:52:21 C 18 36 02.347 +42 46 05.69 L F51
2013-04-04 15:14:08 C 18 38 48.241 +42 12 16.54 L F51
2013-04-04 15:24:49 C 18 38 48.729 +42 12 09.26 L F51
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)