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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135520455942374 3.4022e-08  
a 2.620058374539918 1.2694e-08 au
q 2.264986869026633 9.4134e-08 au
i 9.722718571697607 4.7107e-06 deg
node 131.9924179448436 2.5141e-05 deg
peri 321.3984183888825 3.3259e-05 deg
M 336.5429544799763 2.3261e-05 deg
tp 2459497.433582427250
(2021-Oct-09.93358243)
0.00010043 TDB
period 1549.048009596615
4.24
1.1257e-05
3.082e-08
d
yr
n .2324008021505717 1.6889e-09 deg/d
Q 2.975129880053202 1.4414e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      12046 days (32.98 yr)  
   first obs. used      1988-02-16  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:57  

Additional Information
 Earth MOID = 1.29063 au 
 Jupiter MOID = 2.19356 au 
 T_jup = 3.372 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457531.5 (2016-May-23.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349470641055091 3.3831e-08  
q 2.26776581869085 9.3714e-08 au
tp 2457941.274703699207
(2017-Jul-06.77470370)
9.6195e-05 TDB
node 132.1379421965107 2.5218e-05 deg
peri 320.006403962311 3.3373e-05 deg
i 9.705066564310039 4.7035e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      12046 days (32.98 yr)  
   first obs. used      1988-02-16  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:57  

Additional Information
 Jupiter MOID = 2.19356 au 
 T_jup = 3.372 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.144524262308651E-15 -3.151451920689857E-15 -2.941730126620471E-13 1.870802447925648E-15 -2.507126606786138E-14 3.948399231221471E-17
q -3.151451920689857E-15 8.782342603270129E-15 1.209377907150694E-12 -5.588299816836726E-15 1.523963787809324E-13 5.149573298911542E-16
tp -2.941730126620471E-13 1.209377907150694E-12 9.253477444907005E-9 -3.41028434783839E-11 2.118724427991777E-9 3.221142025319725E-12
node 1.870802447925648E-15 -5.588299816836726E-15 -3.41028434783839E-11 6.359584177994682E-10 -6.345058338388929E-10 4.94109158979873E-11
peri -2.507126606786138E-14 1.523963787809324E-13 2.118724427991777E-9 -6.345058338388929E-10 1.113759130399657E-9 -4.808033146761334E-11
i 3.948399231221471E-17 5.149573298911542E-16 3.221142025319725E-12 4.94109158979873E-11 -4.808033146761334E-11 2.212284069675781E-11

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 14.95   n/a MPCxxxxx  
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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