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JPL Small-Body Database Browser
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300867 (2008 AR4)
Classification: Main-belt Asteroid          SPK-ID: 2300867
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785219832829414 5.5478e-08  
a 2.800199099758427 3.5835e-08 au
q 2.300302002882446 1.5055e-07 au
i 7.648777190617246 8.1424e-06 deg
node 11.52789476887302 4.1562e-05 deg
peri 108.5628659322834 4.7624e-05 deg
M 144.8293443250046 2.5229e-05 deg
tp 2457911.949404693042
(2017-Jun-07.44940469)
0.00011278 TDB
period 1711.519274396859
4.69
3.2855e-05
8.995e-08
d
yr
n .2103394366545269 4.0377e-09 deg/d
Q 3.300096196634409 4.2233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      209  
   data-arc span      7897 days (21.62 yr)  
   first obs. used      1997-11-21  
   last obs. used      2019-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65037  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:49:59  

Additional Information
 Earth MOID = 1.33 au 
 Jupiter MOID = 1.82409 au 
 T_jup = 3.289 
[ 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 16.3   n/a MPO440421  

300867 (2008 AR4)          Discovered 2008-Jan-04 by PMO NEO Survey Program at Purple Mountain
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

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