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
2020-06-16 21:45:55 C 15 24 22.16 +14 39 02.4 V C40
2020-06-16 21:48:03 C 15 24 22.22 +14 38 55.5 V C40
2020-06-16 21:49:07 C 15 24 22.23 +14 38 52.3 V C40
2020-06-16 21:52:19 C 15 24 22.30 +14 38 42.1 V C40
2020-06-16 21:57:41 C 15 24 22.42 +14 38 24.8 V C40
2020-06-16 22:01:57 C 15 24 22.50 +14 38 11.4 V C40
2020-06-16 22:08:23 C 15 24 22.64 +14 37 50.8 V C40
2020-06-16 22:09:27 C 15 24 22.67 +14 37 47.4 V C40
2020-06-16 22:10:31 C 15 24 22.68 +14 37 43.8 V C40
2020-06-16 22:11:35 C 15 24 22.71 +14 37 40.6 V C40
2020-06-16 22:18:02 C 15 24 22.85 +14 37 20.1 V C40
2020-06-16 22:39:54 C 15 24 23.34 +14 36 10.0 V C40
2020-06-17 02:47:11 C 15 24 31.09 +14 23 11.3 V V94
2020-06-17 03:16:56 C 15 24 31.68 +14 21 37.3 V V94
2020-06-17 03:46:45 C 15 24 32.24 +14 20 03.2 V V94
2020-06-17 03:52:29 C 15 24 32.41 +14 19 47.3 q H45
2020-06-17 03:53:42 C 15 24 32.43 +14 19 43.5 q H45
2020-06-17 03:55:09 C 15 24 32.45 +14 19 38.9 q H45
2020-06-17 03:56:07 C 15 24 32.47 +14 19 35.9 q H45
2020-06-17 03:57:10 C 15 24 32.49 +14 19 32.6 q H45
2020-06-17 03:58:23 C 15 24 32.52 +14 19 28.8 q H45
2020-06-17 09:55:48 C 15 24 40.95 +14 00 47.6 V T08
2020-06-17 10:20:53 C 15 24 41.43 +13 59 28.2 V T08
2020-06-17 10:30:24 C 15 24 41.62 +13 58 58.2 V T08
2020-06-17 10:44:49 C 15 24 41.91 +13 58 12.5 V T08
2020-06-17 21:12:24 C 15 24 58.89 +13 25 11.9 V C40
2020-06-17 21:41:18 C 15 24 59.52 +13 23 41.5 V C40
2020-06-17 22:05:47 C 15 25 00.60 +13 22 26.0 V 160
2020-06-17 22:08:33 C 15 25 00.66 +13 22 17.3 V 160
2020-06-17 22:11:26 C 15 25 00.72 +13 22 08.2 V 160
2020-06-17 22:11:53 C 15 25 00.21 +13 22 05.6 V C40
2020-06-17 22:26:54 C 15 25 00.55 +13 21 18.7 V C40
2020-06-17 22:27:58 C 15 25 00.57 +13 21 15.3 V C40
2020-06-17 22:35:28 C 15 25 00.77 +13 20 51.8 V C40
2020-06-18 01:09:09 C 15 25 06.37 +13 12 54.2 q I15
2020-06-18 01:10:14 C 15 25 06.39 +13 12 50.3 q I15
2020-06-18 01:11:20 C 15 25 06.40 +13 12 47.1 q I15
2020-06-18 21:31:14 C 15 25 38.42 +12 09 41.1 V C40
2020-06-18 21:32:22 C 15 25 38.45 +12 09 37.5 V C40
2020-06-18 21:42:03 C 15 25 38.69 +12 09 07.4 V C40
2020-06-18 21:46:03 C 15 25 38.77 +12 08 55.2 V C40
2020-06-18 21:51:44 C 15 25 38.90 +12 08 37.5 V C40
2020-06-18 21:54:50 C 15 25 38.99 +12 08 27.8 V C40
2020-06-18 21:57:08 C 15 25 39.03 +12 08 20.8 V C40
2020-06-18 22:09:08 C 15 25 39.33 +12 07 43.7 V C40
2020-06-18 22:40:21 C 15 25 40.08 +12 06 07.0 V C40
2020-06-18 22:48:20 C 15 25 40.28 +12 05 42.3 V C40
2020-06-18 22:50:38 C 15 25 40.34 +12 05 35.1 V C40
2020-06-18 22:54:36 C 15 25 40.44 +12 05 22.9 V C40
2020-06-18 23:02:36 C 15 25 40.64 +12 04 57.8 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)