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173778 (2001 SK22)
Classification: Main-belt Asteroid          SPK-ID: 2173778
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577928639414403 8.498e-08  
a 2.806073280139919 2.3397e-08 au
q 2.36329494083709 2.4577e-07 au
i 7.772126123149379 8.1563e-06 deg
node 2.144805869562106 4.1982e-05 deg
peri 208.9757424955247 4.8535e-05 deg
M 132.4907080244161 2.8594e-05 deg
tp 2458368.626910819156
(2018-Sep-07.12691082)
0.00013364 TDB
period 1716.907664673236
4.70
2.1473e-05
5.879e-08
d
yr
n .2096793015764861 2.6224e-09 deg/d
Q 3.248851619442749 2.7088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      6080 days (16.65 yr)  
   first obs. used      2001-09-16  
   last obs. used      2018-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55396  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:09:38  

Additional Information
 Earth MOID = 1.36187 au 
 Jupiter MOID = 1.73782 au 
 T_jup = 3.291 
[ 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 15.7   n/a MPO264386  
diameter diameter 3.904 km 0.702 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173778 (2001 SK22)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2001 SK22 = 2004 DL14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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