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JPL Small-Body Database Browser
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243321 (2008 SG20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2243321
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04899817512708707 9.7499e-08  
a 3.441969264952359 4.8465e-08 au
q 3.273319052126172 3.275e-07 au
i 9.670929671178882 1.0597e-05 deg
node 179.0483597501808 3.867e-05 deg
peri 183.677652715441 7.9826e-05 deg
M 219.9911460667296 7.2236e-05 deg
tp 2459507.614081440640
(2021-Oct-20.11408144)
0.00047774 TDB
period 2332.431558037554
6.39
4.9263e-05
1.349e-07
d
yr
n .1543453649301909 3.2599e-09 deg/d
Q 3.610619477778546 5.0839e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1995-08-28  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:37:41  

Additional Information
 Earth MOID = 2.26945 au 
 Jupiter MOID = 1.68169 au 
 T_jup = 3.113 
[ 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 15.6   n/a MPO437136  
diameter diameter 4.715 km 0.758 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243321 (2008 SG20)          Discovered 2008-Sep-19 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2008 SG20 = 2002 TR360 = 2006 GK15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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