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468468 (2004 KH17)
Classification: Aten [NEO, PHA]          SPK-ID: 2468468
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .498312188584604 1.1428e-07  
a .7121065677945697 5.8595e-09 au
q .357255185491387 7.954e-08 au
i 22.12359882004321 3.4518e-05 deg
node 79.1472563560702 1.2075e-05 deg
peri 340.7009566268714 1.7319e-05 deg
M 71.84502516589252 4.7211e-05 deg
tp 2458956.696368749880
(2020-Apr-17.19636875)
2.8683e-05 TDB
period 219.4905940060779
0.60
2.7091e-06
7.417e-09
d
yr
n 1.640161400219416 2.0244e-08 deg/d
Q 1.066957950097752 8.7794e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -6.721583222757164E-14 8.519E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      213  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      5473 days (14.98 yr)  
   first obs. used      2004-05-29  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40056  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-01 06:37:09  

Additional Information
 Earth MOID = .00352913 au 
 Jupiter MOID = 4.26187 au 
 T_jup = 7.901 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

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 21.9   n/a MPO264936  
diameter diameter 0.197 km 0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)  
geometric albedo albedo 0.072   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)  

468468 (2004 KH17)          Discovered 2004-May-29 by LINEAR at Socorro
Reference: Last Updated: 2016-06-21

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