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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05112027180933677 4.1559e-08  
a 2.338439868205256 8.3458e-09 au
q 2.218898186532813 9.7172e-08 au
i 9.028606581146304 4.2121e-06 deg
node 135.6346593542966 2.5078e-05 deg
peri 30.7449925696185 4.4183e-05 deg
M 335.1524877073745 3.625e-05 deg
tp 2459090.650502187073
(2020-Aug-29.15050219)
0.00013163 TDB
period 1306.134006702083
3.58
6.9923e-06
1.914e-08
d
yr
n .2756225610486785 1.4755e-09 deg/d
Q 2.457981549877698 8.7724e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      11673 days (31.96 yr)  
   first obs. used      1988-02-17  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 02:52:34  

Additional Information
 Earth MOID = 1.2321 au 
 Jupiter MOID = 2.5238 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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