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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180097419426877 5.5539e-08  
a 2.796456822086801 3.536e-08 au
q 2.292822164890283 1.5026e-07 au
i 7.652812037929365 8.1493e-06 deg
node 11.42216263013424 4.1555e-05 deg
peri 108.7219334781526 4.7473e-05 deg
M 228.9863062455113 2.596e-05 deg
tp 2459622.119735813455
(2022-Feb-11.61973581)
0.00013104 TDB
period 1708.089425462647
4.68
3.2397e-05
8.87e-08
d
yr
n .210761798904347 3.9975e-09 deg/d
Q 3.300091479283319 4.1729e-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 = 1.3222 au 
 Jupiter MOID = 1.82288 au 
 T_jup = 3.290 
[ 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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