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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1381069201395587 6.0136e-08  
a 2.413800486076532 2.1736e-08 AU
q 2.080437935113132 1.4495e-07 AU
i 8.393109057409811 6.9821e-06 deg
node 109.8181032151773 4.6566e-05 deg
peri 285.3392950476492 5.5083e-05 deg
M 340.3238834013719 3.4662e-05 deg
tp 2456875.366472213084
(2014-Aug-05.86647221)
0.00013239 JED
period 1369.778932830139
3.75
1.8502e-05
5.066e-08
d
yr
n .2628161314002646 3.5499e-09 deg/d
Q 2.747163037039932 2.4737e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      10486 days (28.71 yr)  
   first obs. used      1984-12-23  
   last obs. used      2013-09-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54492  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 05:46:19  

Additional Information
 Earth MOID = 1.10501 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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