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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117270110428658 1.2004e-07  
a 1.869617309251824 1.3837e-08 AU
q 1.660730555495112 2.3264e-07 AU
i 26.23041041935445 9.3309e-06 deg
node 53.88823250098165 1.5314e-05 deg
peri 149.0715699268393 3.5307e-05 deg
M 351.9057491515352 3.632e-05 deg
tp 2457021.494312908458
(2014-Dec-29.99431291)
9.434e-05 JED
period 933.7433183799204
2.56
1.0366e-05
2.838e-08
d
yr
n .3855449275124276 4.2802e-09 deg/d
Q 2.078504063008535 1.5383e-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 = .670933 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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