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58518 (1997 AC2)
Classification: Main-belt Asteroid          SPK-ID: 2058518
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812381059844583 4.859e-08  
a 3.092018084369601 1.8841e-08 au
q 2.531626583088761 1.4764e-07 au
i 7.804374824275971 5.3778e-06 deg
node 332.9860957975955 3.5817e-05 deg
peri 180.0412736631256 3.8777e-05 deg
M 90.91253332325712 1.3558e-05 deg
tp 2458498.986389398662
(2019-Jan-15.48638940)		 7.3987e-05 TDB
period 1985.918698080047
5.44		 1.8151e-05
4.969e-08		 d
yr
n .1812763031779911 1.6569e-09 deg/d
Q 3.65240958565044 2.2256e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1052  
   data-arc span      8198 days (22.44 yr)  
   first obs. used      1997-01-03  
   last obs. used      2019-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:50:48  

Additional Information
 Earth MOID = 1.54212 au 
 Jupiter MOID = 1.35292 au 
 T_jup = 3.185 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456624.5 (2013-Nov-28.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1818320556354431 4.8324e-08  
q 2.526529513804005 1.4742e-07 au
tp 2456511.726815704213
(2013-Aug-07.22681570)		 7.337e-05 TDB
node 333.0593192516201 3.5833e-05 deg
peri 179.2468907637412 3.8778e-05 deg
i 7.805867588851885 5.3786e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1052  
   data-arc span      8198 days (22.44 yr)  
   first obs. used      1997-01-03  
   last obs. used      2019-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:50:48  

Additional Information
 Jupiter MOID = 1.35292 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.335211821048699E-15 -7.084694919726734E-15 5.322715390526142E-13 -1.50073850921215E-15 1.747956837600762E-13 1.287447021389845E-16
q -7.084694919726734E-15 2.173190647442521E-14 -1.75593136155226E-12 1.188432348545889E-14 -5.619614683847983E-13 -7.457829404536158E-16
tp 5.322715390526142E-13 -1.75593136155226E-12 5.383134861899446E-9 -8.51854098840674E-12 1.116089884599998E-9 4.834403766981992E-12
node -1.50073850921215E-15 1.188432348545889E-14 -8.51854098840674E-12 1.284016546877863E-9 -1.27218526094884E-9 1.639388145305126E-11
peri 1.747956837600762E-13 -5.619614683847983E-13 1.116089884599998E-9 -1.27218526094884E-9 1.503742689403603E-9 -1.533244457868643E-11
i 1.287447021389845E-16 -7.457829404536158E-16 4.834403766981992E-12 1.639388145305126E-11 -1.533244457868643E-11 2.892941600730118E-11

[ 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 14.0   n/a MPO474465  
diameter diameter 10.308 km 0.461 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58518 (1997 AC2)          Discovered 1997-Jan-03 by Kobayashi, T. at Oizumi
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AC2 = 2000 SP28 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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