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101816 (1999 JN12)
Classification: Main-belt Asteroid          SPK-ID: 2101816
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1918311918673795 3.3771e-08  
a 2.777012868614422 1.1351e-08 au
q 2.244295180197067 9.6317e-08 au
i 9.574411697892463 4.0392e-06 deg
node 138.4302857428252 1.9215e-05 deg
peri 334.9468332134501 2.1213e-05 deg
M 285.0528926628392 9.1408e-06 deg
tp 2459352.398681773857
(2021-May-17.89868177)
4.3505e-05 TDB
period 1690.30573613313
4.63
1.0364e-05
2.838e-08
d
yr
n .2129792216309713 1.3059e-09 deg/d
Q 3.309730557031777 1.3529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      7866 days (21.54 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:21  

Additional Information
 Earth MOID = 1.26451 au 
 Jupiter MOID = 1.80821 au 
 T_jup = 3.288 
[ 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 14.5   n/a MPO314099  

101816 (1999 JN12)          Discovered 1999-May-08 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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