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312257 (2008 AM11)
Classification: Main-belt Asteroid          SPK-ID: 2312257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103359512767206 5.4831e-08  
a 2.643874852470725 2.7722e-08 au
q 2.352160405566768 1.6001e-07 au
i 4.156329043258147 6.1395e-06 deg
node 143.9031099067258 9.9995e-05 deg
peri 308.9261159831572 0.00010853 deg
M 338.1929033010007 4.3856e-05 deg
tp 2459095.616336904793
(2020-Sep-03.11633690)
0.00019207 TDB
period 1570.217336051749
4.30
2.4696e-05
6.761e-08
d
yr
n .2292676254009564 3.6059e-09 deg/d
Q 2.935589299374682 3.0781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      6228 days (17.05 yr)  
   first obs. used      2002-10-10  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62461  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:09:30  

Additional Information
 Earth MOID = 1.37154 au 
 Jupiter MOID = 2.21865 au 
 T_jup = 3.381 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO494654  

312257 (2008 AM11)          Discovered 2008-Jan-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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