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201154 (2002 KX4)
Classification: Main-belt Asteroid          SPK-ID: 2201154
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1536272924465161 4.4301e-08  
a 2.582550526271323 1.6608e-08 au
q 2.185800281313934 1.1546e-07 au
i 8.278728825434284 4.2414e-06 deg
node 85.97375893656326 3.41e-05 deg
peri 118.4593553736007 3.7371e-05 deg
M 155.3606962171248 1.8204e-05 deg
tp 2458346.300322934913
(2018-Aug-15.80032293)
7.3094e-05 TDB
period 1515.903889966423
4.15
1.4623e-05
4.004e-08
d
yr
n .237482074149156 2.2909e-09 deg/d
Q 2.979300771228711 1.916e-08 au
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      8744 days (23.94 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:43:48  

Additional Information
 Earth MOID = 1.19534 au 
 Jupiter MOID = 2.02075 au 
 T_jup = 3.393 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457784.5 (2017-Jan-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529556166509812 4.4439e-08  
q 2.188550071069937 1.1578e-07 au
tp 2458347.149835636012
(2018-Aug-16.64983564)
7.3309e-05 TDB
node 85.98285156118591 3.4109e-05 deg
peri 118.7196660898655 3.7394e-05 deg
i 8.27651657444124 4.2403e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      8744 days (23.94 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:43:48  

Additional Information
 Jupiter MOID = 2.02075 au 
 T_jup = 3.393 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.974804671564972E-15 -5.107068517642771E-15 -5.333847043437346E-13 1.78061755901422E-14 -1.260675766912131E-13 -9.031882072578675E-16
q -5.107068517642771E-15 1.340539038141869E-14 1.921932552272247E-12 -4.7257150934571E-14 4.257478026029128E-13 3.140753402483167E-15
tp -5.333847043437346E-13 1.921932552272247E-12 5.374258290251472E-9 -1.681991446165001E-12 1.151900678526666E-9 6.244647935271575E-12
node 1.78061755901422E-14 -4.7257150934571E-14 -1.681991446165001E-12 1.163457267451777E-9 -1.151342817096413E-9 -1.513670772385235E-11
peri -1.260675766912131E-13 4.257478026029128E-13 1.151900678526666E-9 -1.151342817096413E-9 1.398338895667074E-9 1.630939535629602E-11
i -9.031882072578675E-16 3.140753402483167E-15 6.244647935271575E-12 -1.513670772385235E-11 1.630939535629602E-11 1.798012239214971E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO494129  
diameter diameter 1.675 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201154 (2002 KX4)          Discovered 2002-May-16 by LINEAR at Socorro
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2027-Jul-10 16:21 < 00:01 Thisb 0.0157299056395776 0.015725308623478 0.0157345089737355 6.60187255980251 6.60187249414544 2461597.181220819 0.48142393001558 563.290981424074 59.2620701195345 -66.7018053761903 36497.9777539905 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 23:43:49 2020-Dec-17 23:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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