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216364 (2008 AC87)
Classification: Main-belt Asteroid          SPK-ID: 2216364
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06203321915338605 5.1417e-08  
a 2.794394113671546 2.6516e-08 au
q 2.621048851217227 1.5564e-07 au
i 1.615595367514758 4.5673e-06 deg
node 73.59846309317437 0.00023189 deg
peri 340.897491635057 0.00023737 deg
M 324.8618389761658 4.9885e-05 deg
tp 2459367.035352829472
(2021-Jun-01.53535283)
0.00023618 TDB
period 1706.199905508547
4.67
2.4285e-05
6.649e-08
d
yr
n .2109952056835327 3.0032e-09 deg/d
Q 2.967739376125865 2.8161e-08 au
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      6119 days (16.75 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:31  

Additional Information
 Earth MOID = 1.63152 au 
 Jupiter MOID = 2.24679 au 
 T_jup = 3.324 
[ 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 16.49   n/a E2021B55  
diameter diameter 3.524 km 0.935 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216364 (2008 AC87)          Discovered 2008-Jan-12 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 2008 AC87 = 2004 ES104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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