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42490 (1991 SU)
Classification: Main-belt Asteroid          SPK-ID: 2042490
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380993891914243 5.7757e-08  
a 2.413815510774708 1.6564e-08 AU
q 2.080469063115935 1.3529e-07 AU
i 8.393082750463565 6.5214e-06 deg
node 109.8182609654563 4.0452e-05 deg
peri 285.3775051169863 4.7328e-05 deg
M 32.85790457275922 2.4268e-05 deg
tp 2456875.476428637958
(2014-Aug-05.97642864)
9.2247e-05 JED
period 1369.791722130981
3.75
1.4099e-05
3.86e-08
d
yr
n .2628136775713237 2.7052e-09 deg/d
Q 2.747161958433481 1.8851e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      10989 days (30.09 yr)  
   first obs. used      1984-12-23  
   last obs. used      2015-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 14:50:20  

Additional Information
 Earth MOID = 1.10601 AU 
 T_jup = 3.490 
[ 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 14.1 mag n/a MPO266156  

42490 (1991 SU)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring (413)
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 SU = 1984 YU2 = 2000 CD3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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