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213660 (2002 SN4)
Classification: Main-belt Asteroid          SPK-ID: 2213660
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427812959947682 4.1566e-08  
a 2.714547410938507 1.5545e-08 au
q 2.326960813565464 1.1831e-07 au
i 12.42903137028176 6.3234e-06 deg
node 7.270081333642771 1.8211e-05 deg
peri 74.66522425877618 3.1367e-05 deg
M 329.2682694830969 2.266e-05 deg
tp 2459339.953394212856
(2021-May-05.45339421)
0.00010275 TDB
period 1633.595670410277
4.47
1.4032e-05
3.842e-08
d
yr
n .2203727681951961 1.8929e-09 deg/d
Q 3.10213400831155 1.7764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      6654 days (18.22 yr)  
   first obs. used      2002-09-27  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52539  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:35  

Additional Information
 Earth MOID = 1.37757 au 
 Jupiter MOID = 2.23299 au 
 T_jup = 3.313 
[ 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 15.99   n/a E2021B55  

213660 (2002 SN4)          Discovered 2002-Sep-27 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2002 SN4 = 2004 CQ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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