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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172549691735125 4.5492e-08  
a 2.420101387140308 1.6222e-08 au
q 1.894322334880365 1.0704e-07 au
i 3.920875906140823 4.2313e-06 deg
node 90.46647303931623 0.00010155 deg
peri 200.8866742873753 0.00010296 deg
M 176.0622327222701 1.9219e-05 deg
tp 2458527.968745595614
(2019-Feb-13.46874560)
7.0313e-05 TDB
period 1375.145866561275
3.76
1.3826e-05
3.785e-08
d
yr
n .2617904098422847 2.6321e-09 deg/d
Q 2.945880439400251 1.9746e-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 = .87675 au 
 Jupiter MOID = 2.24378 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1911-Sep-10 09:08 00:03 Inter 0.0215565760659432 0.021520131620019 0.0215931623239345 6.6930894110323 6.69308930956822 2419289.880457131 2.90906594404117 3304.22816017787 56.9402450377095 56.5834719622406 47258.4006049402 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 06:10:21 2021-Apr-14 06:10
2136-Apr-14 16:31 00:05 Juno 0.0184917390053139 0.0183753524950026 0.0186081421219949 9.50114753196498 9.50114746271938 2501322.188144084 4.58146370545617 5868.60762979472 71.7160600399651 8.56476474969186 5760.87575206003 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 06:10:21 2021-Apr-14 06:10
2155-Jul-15 11:28 00:21 Psych 0.029528202820645 0.0294636840138785 0.0295929661908933 3.70503948210365 3.70503937151175 2508352.977542405 21.2581260137981 5320.03796048396 67.1517060456999 -52.7503770950601 52308.7362993993 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 06:10:21 2021-Apr-14 06:10

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