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JPL Small-Body Database Browser
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39855 (1998 DG3)
Classification: Main-belt Asteroid          SPK-ID: 2039855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2642053489627767 5.5161e-08  
a 2.450574691843555 1.3462e-08 au
q 1.80311975022568 1.4059e-07 au
i 10.06147810251117 5.877e-06 deg
node 340.4883429769404 3.3975e-05 deg
peri 102.2719539064616 3.7373e-05 deg
M 316.6052707748041 1.1091e-05 deg
tp 2459169.402012760810
(2020-Nov-15.90201276)
4.3324e-05 TDB
period 1401.20069140994
3.84
1.1546e-05
3.161e-08
d
yr
n .2569225109629048 2.1171e-09 deg/d
Q 3.098029633461431 1.7019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      975  
   data-arc span      14942 days (40.91 yr)  
   first obs. used      1977-07-17  
   last obs. used      2018-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51922  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 19:34:40  

Additional Information
 Earth MOID = .850257 au 
 Jupiter MOID = 2.23421 au 
 T_jup = 3.427 
[ 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 14.7   n/a MPO395377  
diameter diameter 5.459 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39855 (1998 DG3)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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