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21006 (1988 DG2)
Classification: Main-belt Asteroid          SPK-ID: 2021006
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354166448498602 3.4033e-08  
a 2.619929663893885 1.2777e-08 au
q 2.265147579066753 9.4145e-08 au
i 9.722728383914522 4.7147e-06 deg
node 131.992606334565 2.5141e-05 deg
peri 321.3843882436726 3.3269e-05 deg
M 290.9935216562517 2.3129e-05 deg
tp 2459497.406864528039
(2021-Oct-09.90686453)
0.00010051 TDB
period 1548.933865276394
4.24
1.1331e-05
3.102e-08
d
yr
n .2324179282733682 1.7002e-09 deg/d
Q 2.974711748721017 1.4507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      12015 days (32.90 yr)  
   first obs. used      1988-02-16  
   last obs. used      2021-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51917  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:50:30  

Additional Information
 Earth MOID = 1.29042 au 
 Jupiter MOID = 2.19386 au 
 T_jup = 3.372 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO257017  
diameter diameter 3.138 km 0.828 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21006 (1988 DG2)          Discovered 1988-Feb-17 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1988 DG2 = 1995 WB42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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