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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1919525449768443 3.182e-08  
a 2.777643291590725 1.0601e-08 au
q 2.244467592732026 9.2132e-08 au
i 9.574339273313353 3.2121e-06 deg
node 138.4287077324244 1.8782e-05 deg
peri 334.9009666851047 2.0593e-05 deg
M 327.6942690364369 7.9956e-06 deg
tp 2459352.236550439989
(2021-May-17.73655044)
3.7669e-05 TDB
period 1690.881355385723
4.63
9.6802e-06
2.65e-08
d
yr
n .2129067180576232 1.2189e-09 deg/d
Q 3.310818990449423 1.2636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1999-04-12  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4798  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:45  

Additional Information
 Earth MOID = 1.2646 au 
 Jupiter MOID = 1.80705 au 
 T_jup = 3.287 
[ 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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