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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534984393549701 4.413e-08  
a 2.582834290554476 1.6527e-08 au
q 2.186373257841863 1.1513e-07 au
i 8.278543666986961 4.1472e-06 deg
node 85.97598501562523 3.2888e-05 deg
peri 118.4196450341892 3.6121e-05 deg
M 202.90426650029 1.8285e-05 deg
tp 2459862.114678545959
(2022-Oct-09.61467855)
8.1166e-05 TDB
period 1516.153742501128
4.15
1.4552e-05
3.984e-08
d
yr
n .2374429386073505 2.279e-09 deg/d
Q 2.97929532326709 1.9064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      8801 days (24.10 yr)  
   first obs. used      1996-12-08  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:24:21  

Additional Information
 Earth MOID = 1.19503 au 
 Jupiter MOID = 2.01964 au 
 T_jup = 3.392 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457927.5 (2017-Jun-23.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153022889145073 4.427e-08  
q 2.188064058858677 1.1542e-07 au
tp 2458347.268353964927
(2018-Aug-16.76835396)
7.2224e-05 TDB
node 85.98181519220151 3.2896e-05 deg
peri 118.7707517662021 3.6135e-05 deg
i 8.27712872348997 4.1469e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      8801 days (24.10 yr)  
   first obs. used      1996-12-08  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:24:21  

Additional Information
 Jupiter MOID = 2.01964 au 
 T_jup = 3.392 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.9598296021749E-15 -5.071820753395622E-15 -4.863288466358521E-13 1.668076651830749E-14 -1.108161371761866E-13 -9.509875934781593E-16
q -5.071820753395622E-15 1.332161506434658E-14 1.815388993989112E-12 -4.468063998601005E-14 3.912780953046743E-13 3.258353925390204E-15
tp -4.863288466358521E-13 1.815388993989112E-12 5.2162934660524E-9 -4.886959830083898E-12 1.107603124851541E-9 5.779576218096675E-12
node 1.668076651830749E-14 -4.468063998601005E-14 -4.886959830083898E-12 1.082120369116764E-9 -1.071552716576475E-9 -2.305613494610736E-11
peri -1.108161371761866E-13 3.912780953046743E-13 1.107603124851541E-9 -1.071552716576475E-9 1.305751768972289E-9 2.403010428186792E-11
i -9.509875934781593E-16 3.258353925390204E-15 5.779576218096675E-12 -2.305613494610736E-11 2.403010428186792E-11 1.71966530952407E-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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