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JPL Small-Body Database Browser
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12217 (1982 JD2)
Classification: Main-belt Asteroid          SPK-ID: 2012217
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0682748735523524 4.3538e-08  
a 2.173997025756226 6.2717e-09 au
q 2.02556765371953 9.3478e-08 au
i 4.085595247871399 2.6106e-06 deg
node 106.9454589152548 6.3866e-05 deg
peri 94.89688449995337 6.6603e-05 deg
M 217.4883243407378 1.9647e-05 deg
tp 2459063.984047665377
(2020-Aug-02.48404767)
6.4282e-05 TDB
period 1170.811138018442
3.21
5.0664e-06
1.387e-08
d
yr
n .3074791384452388 1.3306e-09 deg/d
Q 2.322426397792923 6.6999e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1664  
   data-arc span      13414 days (36.73 yr)  
   first obs. used      1982-05-15  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50651  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:16:19  

Additional Information
 Earth MOID = 1.027 au 
 Jupiter MOID = 2.63979 au 
 T_jup = 3.680 
[ 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 15.0   n/a MPO452342  
diameter diameter 2.461 km 0.457 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.350   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12217 (1982 JD2)          Discovered 1982-May-15 by Palomar at Palomar
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1982 JD2 = 1998 KM23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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