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
2020-06-12 21:25:19 C 15 22 09.36 +19 51 52.0 q K73
2020-06-12 21:27:51 C 15 22 09.41 +19 51 43.5 q K73
2020-06-12 21:30:44 C 15 22 09.44 +19 51 34.0 q K73
2020-06-12 22:29:25 C 15 22 10.44 +19 48 18.3 V 160
2020-06-12 22:32:33 C 15 22 10.49 +19 48 08.0 V 160
2020-06-12 22:35:40 C 15 22 10.53 +19 47 57.5 V 160
2020-06-13 03:20:05 C 15 22 17.28 +19 32 18.2 V V94
2020-06-13 03:41:19 C 15 22 17.58 +19 31 08.1 V V94
2020-06-13 04:09:09 C 15 22 17.97 +19 29 36.1 V V94
2020-06-13 05:32:18 C 15 22 19.19 +19 25 03.5 q H45
2020-06-13 05:33:41 C 15 22 19.21 +19 24 59.0 q H45
2020-06-13 05:35:46 C 15 22 19.25 +19 24 52.1 q H45
2020-06-13 05:36:54 C 15 22 19.26 +19 24 48.2 q H45
2020-06-13 05:37:59 C 15 22 19.28 +19 24 44.6 q H45
2020-06-13 05:39:10 C 15 22 19.30 +19 24 40.7 q H45
2020-06-13 09:18:24 C 15 22 24.10 +19 12 45.0 V T08
2020-06-13 09:23:03 C 15 22 24.15 +19 12 29.6 V T08
2020-06-13 09:31:43 C 15 22 24.28 +19 12 01.0 V T08
2020-06-13 09:48:56 C 15 22 24.51 +19 11 03.9 V T08
2020-06-13 18:11:45 C 15 22 36.49 +18 43 16.7 V C40
2020-06-13 18:18:11 C 15 22 36.58 +18 42 55.7 V C40
2020-06-13 18:19:16 C 15 22 36.60 +18 42 51.9 V C40
2020-06-13 18:27:49 C 15 22 36.74 +18 42 24.0 V C40
2020-06-13 18:32:05 C 15 22 36.81 +18 42 09.9 V C40
2020-06-13 18:35:19 C 15 22 36.86 +18 41 59.3 V C40
2020-06-13 18:36:23 C 15 22 36.87 +18 41 55.9 V C40
2020-06-13 18:42:47 C 15 22 36.97 +18 41 34.7 V C40
2020-06-13 18:44:55 C 15 22 37.01 +18 41 27.7 V C40
2020-06-13 18:48:09 C 15 22 37.06 +18 41 17.3 V C40
2020-06-13 18:53:29 C 15 22 37.14 +18 40 59.6 V C40
2020-06-13 19:05:51 C 15 22 37.34 +18 40 18.9 V C40
2020-06-13 19:07:58 C 15 22 37.36 +18 40 11.9 V C40
2020-06-13 19:09:03 C 15 22 37.37 +18 40 08.4 V C40
2020-06-13 19:13:21 C 15 22 37.45 +18 39 54.4 V C40
2020-06-13 19:14:25 C 15 22 37.46 +18 39 51.0 V C40
2020-06-13 19:21:54 C 15 22 37.57 +18 39 26.4 V C40
2020-06-14 06:31:14 C 15 22 51.85 +18 02 57.3 V G96
2020-06-14 06:38:45 C 15 22 51.97 +18 02 32.6 V G96
2020-06-14 06:46:17 C 15 22 52.09 +18 02 07.9 V G96
2020-06-14 06:53:50 C 15 22 52.20 +18 01 43.2 V G96
2020-06-14 18:13:48 C 15 23 08.66 +17 24 39.6 V C40
2020-06-14 18:20:51 C 15 23 08.78 +17 24 16.6 V C40
2020-06-14 18:21:25 C 15 23 08.78 +17 24 14.8 V C40
2020-06-14 18:23:09 C 15 23 08.82 +17 24 09.3 V C40
2020-06-14 18:26:34 C 15 23 08.87 +17 23 58.4 V C40
2020-06-14 18:27:08 C 15 23 08.89 +17 23 56.5 V C40
2020-06-14 18:28:52 C 15 23 08.92 +17 23 50.7 V C40
2020-06-14 18:29:26 C 15 23 08.92 +17 23 49.0 V C40
2020-06-14 18:29:59 C 15 23 08.93 +17 23 47.3 V C40
2020-06-14 18:32:17 C 15 23 08.97 +17 23 39.6 V C40
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)