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
2022-07-01 03:46:34 C 23 31 13.371 -17 10 21.74 X Z19
2022-07-01 03:47:43 C 23 31 13.409 -17 10 22.44 X Z19
2022-07-01 03:48:52 C 23 31 13.443 -17 10 23.06 X Z19
2022-07-01 03:50:01 C 23 31 13.480 -17 10 23.73 X Z19
2022-07-01 03:51:10 C 23 31 13.516 -17 10 24.38 X Z19
2022-07-01 03:52:19 C 23 31 13.554 -17 10 25.07 X Z19
2022-07-01 03:53:28 C 23 31 13.589 -17 10 25.72 X Z19
2022-07-01 03:54:38 C 23 31 13.625 -17 10 26.34 X Z19
2022-07-01 03:55:47 C 23 31 13.661 -17 10 27.03 X Z19
2022-07-01 03:56:56 C 23 31 13.699 -17 10 27.72 X Z19
2022-07-01 03:58:05 C 23 31 13.735 -17 10 28.39 X Z19
2022-07-01 03:59:14 C 23 31 13.772 -17 10 29.05 X Z19
2022-07-01 04:00:23 C 23 31 13.808 -17 10 29.71 X Z19
2022-07-01 04:01:32 C 23 31 13.846 -17 10 30.36 X Z19
2022-07-09 08:40:20 C 23 36 33.115 -19 15 01.08 V W68
2022-07-09 08:42:56 C 23 36 33.055 -19 15 03.24 V W68
2022-07-09 08:46:54 C 23 36 33.146 -19 15 06.16 V W68
2022-07-09 09:03:29 C 23 36 33.499 -19 15 16.85 V W68
2022-07-11 10:17:18 C 23 37 28.160 -19 50 36.67 V 703
2022-07-11 10:24:23 C 23 37 28.258 -19 50 41.39 V 703
2022-07-11 10:31:30 C 23 37 28.348 -19 50 46.21 V 703
2022-07-11 10:38:36 C 23 37 28.492 -19 50 52.15 V 703
2022-07-21 07:29:46 C 23 39 11.592 -23 00 37.48 V W68
2022-07-21 07:37:24 C 23 39 11.520 -23 00 44.14 V W68
2022-07-21 07:43:07 C 23 39 11.522 -23 00 48.71 V W68
2022-07-21 07:52:57 C 23 39 11.482 -23 00 57.60 V W68
2022-07-22 09:29:54 C 23 39 05.378 -23 23 21.59 V W68
2022-07-22 09:34:35 C 23 39 05.410 -23 23 26.23 V W68
2022-07-22 09:39:08 C 23 39 05.299 -23 23 30.19 V W68
2022-07-22 09:56:38 C 23 39 05.227 -23 23 45.35 V W68
2022-07-25 08:09:06 C 23 38 31.435 -24 26 46.46 V W68
2022-07-25 08:14:04 C 23 38 31.356 -24 26 50.53 V W68
2022-07-25 08:22:33 C 23 38 31.224 -24 26 59.64 V W68
2022-07-25 09:01:57 C 23 38 30.689 -24 27 35.10 V W68
2022-07-25 12:47:52 C 23 38 28.415 -24 31 09.23 U F52
2022-07-25 13:01:32 C 23 38 28.209 -24 31 21.77 U F52
2022-07-25 13:15:14 C 23 38 28.008 -24 31 34.35 U F52
2022-07-26 07:10:10 C 23 38 14.534 -24 47 53.12 V W68
2022-07-26 07:14:13 C 23 38 14.527 -24 47 56.83 V W68
2022-07-26 07:42:03 C 23 38 14.069 -24 48 22.68 V W68
2022-07-26 07:46:39 C 23 38 13.978 -24 48 26.53 V W68
2022-07-29 06:58:52 C 23 37 02.681 -25 54 55.80 V W68
2022-07-29 07:02:37 C 23 37 02.580 -25 54 57.92 V W68
2022-07-29 07:22:04 C 23 37 02.220 -25 55 16.72 V W68
2022-07-29 07:30:38 C 23 37 01.982 -25 55 23.77 V W68
2022-08-01 00:41:56 C 23 35 31.766 -26 57 25.81 V M22
2022-08-01 00:49:48 C 23 35 31.481 -26 57 33.80 V M22
2022-08-01 00:55:03 C 23 35 31.366 -26 57 38.45 V M22
2022-08-01 01:04:20 C 23 35 31.087 -26 57 47.52 V M22
2022-08-02 07:28:14 C 23 34 40.774 -27 26 58.02 V W68
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)