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
2021-09-15 12:16:03 C 08 18 26.73 +15 55 09.5 U I41
2021-09-16 12:06:34 C 08 21 47.85 +15 51 23.7 U I41
2021-09-16 12:10:14 C 08 21 48.38 +15 51 23.6 U I41
2021-09-16 12:13:52 C 08 21 48.90 +15 51 22.6 U I41
2021-09-16 12:17:32 C 08 21 49.42 +15 51 22.4 U I41
2021-09-19 12:09:58 C 08 32 00.78 +15 38 54.4 U I41
2021-09-19 12:13:31 C 08 32 01.29 +15 38 54.0 U I41
2021-09-19 12:17:03 C 08 32 01.77 +15 38 53.2 U I41
2021-09-19 12:20:36 C 08 32 02.29 +15 38 52.5 U I41
2021-09-22 12:12:54 C 08 42 21.25 +15 24 41.1 U I41
2021-09-22 12:16:26 C 08 42 21.77 +15 24 40.4 U I41
2021-09-22 12:20:00 C 08 42 22.27 +15 24 39.3 U I41
2021-09-22 12:23:34 C 08 42 22.81 +15 24 39.3 U I41
2021-09-23 12:10:05 C 08 45 49.26 +15 19 34.4 U I41
2021-09-23 12:13:39 C 08 45 49.78 +15 19 33.3 U I41
2021-09-23 12:17:13 C 08 45 50.30 +15 19 33.0 U I41
2021-09-23 12:24:19 C 08 45 51.32 +15 19 31.5 U I41
2021-09-26 12:18:48 C 08 56 20.96 +15 02 59.3 U I41
2021-09-26 12:22:20 C 08 56 21.51 +15 02 58.2 U I41
2021-09-26 12:25:52 C 08 56 22.02 +15 02 57.6 U I41
2021-09-27 12:17:34 C 08 59 52.72 +14 57 04.6 U I41
2021-09-27 12:21:05 C 08 59 53.24 +14 57 03.5 U I41
2021-09-27 12:24:36 C 08 59 53.77 +14 57 02.6 U I41
2021-09-27 12:28:08 C 08 59 54.27 +14 57 01.8 U I41
2021-09-27 12:31:39 C 08 59 54.80 +14 57 01.0 U I41
2021-10-02 12:16:12 C 09 17 45.18 +14 24 30.3 U I41
2021-10-02 12:19:48 C 09 17 45.73 +14 24 29.3 U I41
2021-10-02 12:27:01 C 09 17 46.82 +14 24 27.3 U I41
2021-10-02 12:30:37 C 09 17 47.36 +14 24 25.9 U I41
2021-10-10 12:22:59 C 09 47 08.01 +13 21 52.4 U I41
2021-10-10 12:26:33 C 09 47 08.52 +13 21 51.4 U I41
2021-10-10 12:30:06 C 09 47 09.08 +13 21 50.2 U I41
2021-10-10 12:33:40 C 09 47 09.59 +13 21 48.2 U I41
2021-10-10 12:37:15 C 09 47 10.18 +13 21 47.3 U I41
2021-10-11 12:24:32 C 09 50 52.31 +13 13 07.7 U I41
2021-10-11 12:28:05 C 09 50 52.88 +13 13 06.7 U I41
2021-10-11 12:31:39 C 09 50 53.41 +13 13 05.3 U I41
2021-10-11 12:35:13 C 09 50 53.97 +13 13 04.3 U I41
2021-10-11 12:38:46 C 09 50 54.51 +13 13 03.1 U I41
2022-06-04 10:34:21 C 22 58 39.223 -13 08 23.86 V 703
2022-06-04 10:57:06 C 22 58 40.976 -13 08 29.04 V 703
2022-06-12 10:30:49 C 23 10 27.383 -13 57 14.72 V 703
2022-06-12 10:40:08 C 23 10 27.880 -13 57 15.95 V 703
2022-06-12 10:58:46 C 23 10 28.808 -13 57 21.74 V 703
2022-06-25 10:27:34 C 23 26 02.141 -15 58 19.60 U I41
2022-06-25 11:34:09 C 23 26 04.771 -15 58 52.00 U I41
2022-07-01 03:41:57 C 23 31 13.224 -17 10 19.08 X Z19
2022-07-01 03:43:06 C 23 31 13.260 -17 10 19.78 X Z19
2022-07-01 03:44:15 C 23 31 13.299 -17 10 20.41 X Z19
2022-07-01 03:45:25 C 23 31 13.332 -17 10 21.06 X Z19
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)