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39561 (1992 QA)
Classification: Mars-crossing Asteroid          SPK-ID: 2039561
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1118501344801938 1.2002e-07  
a 1.869821427408058 1.3832e-08 AU
q 1.660681649298519 2.3266e-07 AU
i 26.23110077630532 9.3308e-06 deg
node 53.89849960030553 1.5313e-05 deg
peri 149.0358278329483 3.5275e-05 deg
M 274.8368794749251 3.5786e-05 deg
tp 2457021.426438234801
(2014-Dec-29.92643823)
9.4238e-05 JED
period 933.8962367062529
2.56
1.0363e-05
2.837e-08
d
yr
n .3854817974957042 4.2774e-09 deg/d
Q 2.078961205517598 1.5379e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      622  
   data-arc span      14458 days (39.58 yr)  
   first obs. used      1974-07-13  
   last obs. used      2014-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51199  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 05:00:02  

Additional Information
 Earth MOID = .669619 AU 
 T_jup = 3.852 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO250590  

39561 (1992 QA)          Discovered 1992-Aug-19 by McNaught, R. H. at Siding Spring (413)
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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