IAA RAS IAA Minor Planet Database

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
2020-01-15 04:14:23 S 06 33 30.571 +32 39 04.90 – V C57
2020-01-15 04:14:23 s 1 -128376.44 9 +386508.11 2880.0 – C57
2020-01-15 04:44:23 S 06 33 27.062 +32 40 34.46 – V C57
2020-01-15 04:44:23 s 1 -129239.73 1 +385925.41 8360.0 – C57
2020-01-15 05:14:23 S 06 33 23.330 +32 42 10.19 – V C57
2020-01-15 05:14:23 s 1 -130100.51 1 +385335.31 2410.0 – C57
2020-01-15 05:44:23 S 06 33 19.872 +32 43 37.56 – V C57
2020-01-15 05:44:23 s 1 -130958.76 9 +384737.82 4990.0 – C57
2020-01-15 06:14:23 S 06 33 16.109 +32 45 04.28 – V C57
2020-01-15 06:14:23 s 1 -131814.48 0 +384132.92 6080.0 – C57
2020-01-15 06:44:23 S 06 33 12.763 +32 46 34.72 – V C57
2020-01-15 06:44:23 s 1 -132667.62 4 +383520.62 5620.0 – C57
2020-01-15 07:14:23 S 06 33 09.026 +32 48 12.31 – V C57
2020-01-15 07:14:23 s 1 -133518.17 7 +382900.90 3600.0 – C57
2020-01-15 07:44:23 S 06 33 05.378 +32 49 44.22 – V C57
2020-01-15 07:44:23 s 1 -134366.11 7 +382273.77 9970.0 – C57
2020-01-15 08:14:23 S 06 33 01.879 +32 51 13.21 – V C57
2020-01-15 08:14:23 s 1 -135211.42 1 +381639.21 4700.0 – C57
2020-01-15 08:44:23 S 06 32 58.205 +32 52 46.70 – V C57
2020-01-15 08:44:23 s 1 -136054.06 6 +380997.24 7760.0 – C57
2020-01-15 09:14:23 S 06 32 54.410 +32 54 24.55 – V C57
2020-01-15 09:14:23 s 1 -136894.02 9 +380347.83 9110.0 – C57
2020-01-15 09:44:23 S 06 32 51.218 +32 55 40.04 – V C57
2020-01-15 09:44:23 s 1 -137731.28 7 +379690.99 8710.0 – C57
2020-01-15 10:14:23 S 06 32 47.422 +32 57 16.78 – V C57
2020-01-15 10:14:23 s 1 -138565.81 6 +379026.71 6540.0 – C57
2020-01-15 10:44:23 S 06 32 43.872 +32 58 47.82 – V C57
2020-01-15 10:44:23 s 1 -139397.59 2 +378354.99 2540.0 – C57
2020-01-15 11:14:23 S 06 32 40.286 +33 00 18.29 – V C57
2020-01-15 11:14:23 s 1 -140226.59 3 +377675.82 6700.0 – C57
2020-01-15 11:44:23 S 06 32 36.720 +33 01 47.50 – V C57
2020-01-15 11:44:23 s 1 -141052.79 4 +376989.20 8970.0 – C57
2020-01-15 12:14:23 S 06 32 33.038 +33 03 21.17 – V C57
2020-01-15 12:14:23 s 1 -141876.17 1 +376295.12 9320.0 – C57
2020-01-15 12:44:23 S 06 32 29.508 +33 04 48.65 – V C57
2020-01-15 12:44:23 s 1 -142696.70 0 +375593.57 7700.0 – C57
2020-01-15 13:14:23 S 06 32 25.759 +33 06 24.52 – V C57
2020-01-15 13:14:23 s 1 -143514.35 7 +374884.55 4090.0 – C57
2020-01-15 13:44:23 S 06 32 22.380 +33 07 50.70 – V C57
2020-01-15 13:44:23 s 1 -144329.11 7 +374168.06 8440.0 – C57
2020-01-15 14:14:23 S 06 32 18.684 +33 09 22.21 – V C57
2020-01-15 14:14:23 s 1 -145140.95 5 +373444.08 730.0 – C57
2020-01-15 14:44:23 S 06 32 14.947 +33 10 55.38 – V C57
2020-01-15 14:44:23 s 1 -145949.84 7 +372712.62 900.0 – C57
2020-01-15 15:14:23 S 06 32 11.434 +33 12 23.40 – V C57
2020-01-15 15:14:23 s 1 -146755.76 7 +371973.66 8930.0 – C57
2020-01-15 15:44:23 S 06 32 07.783 +33 13 55.67 – V C57
2020-01-15 15:44:23 s 1 -147558.69 1 +371227.20 4780.0 – C57
2020-01-15 16:14:23 S 06 32 04.243 +33 15 24.44 – V C57
2020-01-15 16:14:23 s 1 -148358.59 3 +370473.24 8410.0 – C57
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)