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11312 (1994 AR2)
Classification: Main-belt Asteroid          SPK-ID: 2011312
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765037211436846 2.5488e-08  
a 2.365790610217937 6.2005e-09 au
q 1.948219764067683 6.1511e-08 au
i .9440465506613888 2.9239e-06 deg
node 57.42725007356028 0.000193 deg
peri 199.9232952974233 0.00019321 deg
M 325.8078682289981 9.5414e-06 deg
tp 2459126.736969537745
(2020-Oct-04.23696954)
3.5364e-05 TDB
period 1329.115988963581
3.64
5.2252e-06
1.431e-08
d
yr
n .2708567220538224 1.0648e-09 deg/d
Q 2.783361456368191 7.2949e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2257  
   data-arc span      14679 days (40.19 yr)  
   first obs. used      1980-04-08  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:14:06  

Additional Information
 Earth MOID = .933197 au 
 Jupiter MOID = 2.27157 au 
 T_jup = 3.527 
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Orbital Elements at Epoch 2456842.5 (2014-Jul-04.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771513534610425 2.5454e-08  
q 1.946574179958297 6.1471e-08 au
tp 2456467.828644457671
(2013-Jun-24.32864446)
3.3745e-05 TDB
node 57.41409608971625 0.00019291 deg
peri 199.8961244252907 0.00019313 deg
i .9445667176086366 2.9238e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2257  
   data-arc span      14679 days (40.19 yr)  
   first obs. used      1980-04-08  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:14:06  

Additional Information
 Jupiter MOID = 2.27157 au 
 T_jup = 3.527 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.479276323299694E-16 -1.559524788691683E-15 -3.548979541838787E-14 1.543648314204168E-16 -4.847203456235979E-16 -3.575696912558196E-17
q -1.559524788691683E-15 3.778720403862523E-15 8.112526806223031E-14 -5.388578687537247E-16 2.229005312588942E-15 9.441740310807695E-17
tp -3.548979541838787E-14 8.112526806223031E-14 1.138750752899655E-9 2.641711307842578E-12 3.141893066458826E-10 3.038991589982875E-14
node 1.543648314204168E-16 -5.388578687537247E-16 2.641711307842578E-12 3.721615791963777E-8 -3.721022227195829E-8 -5.685634585098672E-11
peri -4.847203456235979E-16 2.229005312588942E-15 3.141893066458826E-10 -3.721022227195829E-8 3.729765659510351E-8 5.685601381929549E-11
i -3.575696912558196E-17 9.441740310807695E-17 3.038991589982875E-14 -5.685634585098672E-11 5.685601381929549E-11 8.548637357154184E-12

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 14.3   n/a MPO365386  
diameter diameter 3.628 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.307   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11312 (1994 AR2)          Discovered 1994-Jan-14 by Kobayashi, T. at Oizumi
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1994 AR2 = 1980 GY1 = 1997 CQ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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