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309212 (2007 JS9)
Classification: Main-belt Asteroid          SPK-ID: 2309212
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171972112389032 4.5505e-08  
a 2.420136403233319 1.625e-08 au
q 1.894489525633292 1.0707e-07 au
i 3.920618145341475 4.2309e-06 deg
node 90.46366553728357 0.00010156 deg
peri 200.9155064367829 0.00010298 deg
M 227.3313129036555 1.9483e-05 deg
tp 2459903.285433937141
(2022-Nov-19.78543394)
7.7165e-05 TDB
period 1375.175711845856
3.77
1.3851e-05
3.792e-08
d
yr
n .2617847282343163 2.6366e-09 deg/d
Q 2.945783280833345 1.978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      7473 days (20.46 yr)  
   first obs. used      2000-08-29  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:10:20  

Additional Information
 Earth MOID = .878509 au 
 Jupiter MOID = 2.24296 au 
 T_jup = 3.478 
[ 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 16.93   n/a MPCxxxxx  

309212 (2007 JS9)          Discovered 2007-May-10 by Lowe, A. at Mayhill
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2007 JS9 = 2000 QE204 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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