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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577928155553887 6.4839e-08  
a 2.806073297540138 1.9935e-08 au
q 2.363295091266485 1.8402e-07 au
i 7.772132587492098 7.2043e-06 deg
node 2.144780036530254 3.527e-05 deg
peri 208.9757812994959 4.0841e-05 deg
M 132.4906932276515 2.3919e-05 deg
tp 2458368.626975510422
(2018-Sep-07.12697551)
0.00011183 TDB
period 1716.907680642831
4.70
1.8296e-05
5.009e-08
d
yr
n .2096792996261812 2.2344e-09 deg/d
Q 3.24885150381379 2.3081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      6974 days (19.09 yr)  
   first obs. used      2001-09-16  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:17:35  

Additional Information
 Earth MOID = 1.36187 au 
 Jupiter MOID = 1.73782 au 
 T_jup = 3.291 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457239.5 (2015-Aug-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566175245463834 6.5009e-08  
q 2.368586215580514 1.8442e-07 au
tp 2456650.934005646940
(2013-Dec-24.43400565)
0.00010903 TDB
node 2.228305772406657 3.5243e-05 deg
peri 209.2172834169457 4.09e-05 deg
i 7.773442762257237 7.2042e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      6974 days (19.09 yr)  
   first obs. used      2001-09-16  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:17:35  

Additional Information
 Jupiter MOID = 1.73782 au 
 T_jup = 3.291 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.226201609097308E-15 -1.193884916332776E-14 -4.158079761425936E-12 -3.783506179489994E-14 -7.073962088039793E-13 3.300907156506286E-15
q -1.193884916332776E-14 3.400890372831115E-14 1.191822975631117E-11 9.923315473669646E-14 2.058395220753084E-12 -6.897130220151982E-15
tp -4.158079761425936E-12 1.191822975631117E-11 1.188685876152104E-8 6.143904846361284E-11 2.268489490381871E-9 -4.950523077971194E-12
node -3.783506179489994E-14 9.923315473669646E-14 6.143904846361284E-11 1.242036932738021E-9 -1.219759280261328E-9 -3.416390750387058E-11
peri -7.073962088039793E-13 2.058395220753084E-12 2.268489490381871E-9 -1.219759280261328E-9 1.672803879074631E-9 3.338467515757366E-11
i 3.300907156506286E-15 -6.897130220151982E-15 -4.950523077971194E-12 -3.416390750387058E-11 3.338467515757366E-11 5.190025975907795E-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 15.7   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

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