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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05716637165449832 7.6639e-08  
a 2.965922390320092 2.9209e-08 au
q 2.796371368656656 2.2789e-07 au
i 9.815864818242833 5.0366e-06 deg
node 271.6315855124947 6.7181e-05 deg
peri 13.89919306032383 0.00014596 deg
M 43.07794528468807 0.00012783 deg
tp 2458777.250456091775
(2019-Oct-20.75045609)
0.00066395 TDB
period 1865.684058880317
5.11
2.7561e-05
7.546e-08
d
yr
n .1929587157517187 2.8505e-09 deg/d
Q 3.135473411983529 3.0879e-08 au
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      8705 days (23.83 yr)  
   first obs. used      1997-01-15  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:14:18  

Additional Information
 Earth MOID = 1.78094 au 
 Jupiter MOID = 1.98267 au 
 T_jup = 3.240 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Sep-27 00:33 00:04 Jupiter 1.98486854659779 1.98486778284854 1.98486931034726 4.05836265275257 3.95181321815905 2425881.522944273 3.6652650235735 280.957223126794 35.1637338731125 -89.4899551629177 2672347.69546955 T 17 CATAB v2.0f-lin.ifort 2020-Dec-17 22:14:19 2020-Dec-17 22:14
1965-Sep-09 18:12 00:02 Jupiter 1.99160674843691 1.99160597479208 1.99160752208219 4.21118204954995 4.10894902885993 2439013.258495627 2.04236703653336 186.867389883132 34.5837038368742 88.0377184572175 2679275.64491167 T 17 CATAB v2.0f-lin.ifort 2020-Dec-17 22:14:19 2020-Dec-17 22:14

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