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85429 (1997 AJ18)
Classification: Main-belt Asteroid          SPK-ID: 2085429
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05716637146905126 7.6662e-08  
a 2.9659223904836 2.9241e-08 au
q 2.796371369360838 2.2799e-07 au
i 9.815865029596852 5.0579e-06 deg
node 271.6315865141672 6.7217e-05 deg
peri 13.89919187315405 0.00014598 deg
M 43.0779454491292 0.00012783 deg
tp 2458777.250455221105
(2019-Oct-20.75045522)
0.00066397 TDB
period 1865.684059034596
5.11
2.7591e-05
7.554e-08
d
yr
n .1929587157357624 2.8536e-09 deg/d
Q 3.135473411606362 3.0913e-08 au
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      8683 days (23.77 yr)  
   first obs. used      1997-01-15  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50064  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:00  

Additional Information
 Earth MOID = 1.78094 au 
 Jupiter MOID = 1.98267 au 
 T_jup = 3.240 
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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 14.9   n/a MPO351440  
diameter diameter 3.467 km 0.564 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.212   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85429 (1997 AJ18)          Discovered 1997-Jan-15 by Klet at Klet
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1997 AJ18 = 2002 AU54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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