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32781 (1988 DD2)
Classification: Main-belt Asteroid          SPK-ID: 2032781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05133276767570494 4.7091e-08  
a 2.33828878176642 9.0951e-09 au
q 2.218257946973297 1.0863e-07 au
i 9.027941092801671 4.566e-06 deg
node 135.6411989400218 2.7164e-05 deg
peri 30.85687752272042 4.5766e-05 deg
M 224.804958771039 3.6787e-05 deg
tp 2459090.960354598006
(2020-Aug-29.46035460)
0.00013421 TDB
period 1306.007424904419
3.58
7.6199e-06
2.086e-08
d
yr
n .2756492751381921 1.6083e-09 deg/d
Q 2.458319616559542 9.562e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1297  
   data-arc span      11169 days (30.58 yr)  
   first obs. used      1988-02-17  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55464  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 19:02:02  

Additional Information
 Earth MOID = 1.23195 au 
 Jupiter MOID = 2.52489 au 
 T_jup = 3.548 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO417031  
diameter diameter 3.899 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32781 (1988 DD2)          Discovered 1988-Feb-17 by Elst, E. W. at La Silla
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1988 DD2 = 1999 CW56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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