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
2022-08-02 07:35:58 C 23 34 40.500 -27 27 05.26 V W68
2022-08-02 07:39:57 C 23 34 40.337 -27 27 09.14 V W68
2022-08-02 07:47:17 C 23 34 40.106 -27 27 16.09 V W68
2022-08-02 07:51:28 C 23 34 40.003 -27 27 20.41 V W68
2022-08-02 07:53:31 C 23 34 40.018 -27 27 21.49 V W68
2022-08-02 07:59:12 C 23 34 39.770 -27 27 27.86 V W68
2022-08-02 08:43:27 C 23 34 38.383 -27 28 10.06 V W68
2022-08-05 01:21:00 C 23 32 34.080 -28 30 23.58 V M22
2022-08-05 01:25:38 C 23 32 33.924 -28 30 27.40 V M22
2022-08-05 01:35:12 C 23 32 33.557 -28 30 36.47 V M22
2022-08-05 01:55:10 C 23 32 32.815 -28 30 56.09 V M22
2022-08-16 23:20:16 C 23 19 03.518 -32 55 48.25 V M22
2022-08-16 23:23:47 C 23 19 03.312 -32 55 51.46 V M22
2022-08-16 23:29:37 C 23 19 02.942 -32 55 56.32 V M22
2022-08-16 23:38:17 C 23 19 02.383 -32 56 04.06 V M22
2022-08-18 06:32:40 C 23 17 11.974 -33 22 27.80 V W68
2022-08-18 06:36:33 C 23 17 11.746 -33 22 31.40 V W68
2022-08-18 06:50:35 C 23 17 10.826 -33 22 43.03 V W68
2022-08-18 07:43:00 C 23 17 07.522 -33 23 27.24 V W68
2022-08-21 00:28:26 C 23 13 04.846 -34 16 26.18 V M22
2022-08-21 00:33:00 C 23 13 04.529 -34 16 29.82 V M22
2022-08-21 00:41:32 C 23 13 03.924 -34 16 36.05 V M22
2022-08-21 01:33:05 C 23 13 00.487 -34 17 15.58 V M22
2022-08-23 23:48:42 C 23 08 22.090 -35 10 43.25 V M22
2022-08-23 23:50:39 C 23 08 21.974 -35 10 44.90 V M22
2022-08-23 23:53:15 C 23 08 21.773 -35 10 47.21 V M22
2022-08-23 23:55:11 C 23 08 21.634 -35 10 48.11 V M22
2022-08-24 00:01:48 C 23 08 21.166 -35 10 53.00 V M22
2022-08-24 00:05:04 C 23 08 20.933 -35 10 54.95 V M22
2022-08-24 00:16:01 C 23 08 20.138 -35 11 04.06 V M22
2022-08-24 00:20:03 C 23 08 19.848 -35 11 06.83 V M22
2022-08-25 05:59:50 C 23 06 18.470 -35 32 16.08 V W68
2022-08-25 06:12:23 C 23 06 17.585 -35 32 24.76 V W68
2022-08-25 06:58:49 C 23 06 14.237 -35 32 56.94 V W68
2022-08-25 07:03:35 C 23 06 13.903 -35 32 59.78 V W68
2022-08-27 02:29:14 C 23 03 13.666 -36 02 17.74 V W68
2022-08-27 02:33:47 C 23 03 13.387 -36 02 21.62 V W68
2022-08-27 03:24:40 C 23 03 09.710 -36 02 56.08 V W68
2022-08-27 03:33:41 C 23 03 09.041 -36 03 00.65 V W68
2022-08-27 04:14:14 C 23 03 06.005 -36 03 27.76 V W68
2022-08-27 04:19:52 C 23 03 05.582 -36 03 32.15 V W68
2022-08-27 04:25:42 C 23 03 05.162 -36 03 35.71 V W68
2022-08-27 04:35:35 C 23 03 04.466 -36 03 41.87 V W68
2022-08-27 22:02:40 C 23 01 50.971 -36 14 52.62 V M22
2022-08-27 22:12:48 C 23 01 50.194 -36 14 58.88 V M22
2022-08-27 22:17:02 C 23 01 49.908 -36 15 01.48 V M22
2022-08-27 22:24:51 C 23 01 49.325 -36 15 06.37 V M22
2022-08-28 10:16:35 C 23 00 59.072 -36 22 38.96 U F51
2022-08-28 10:31:44 C 23 00 57.949 -36 22 48.39 U F51
2022-08-28 10:47:00 C 23 00 56.817 -36 22 57.85 U 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)