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39871 (1998 DB33)
Classification: Main-belt Asteroid          SPK-ID: 2039871
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .136356630905882 3.8953e-08  
a 2.571018362015166 1.2893e-08 au
q 2.220442960173619 9.8098e-08 au
i 8.312319470054128 4.4149e-06 deg
node 75.75674501207688 2.8659e-05 deg
peri 92.31749697441492 3.3546e-05 deg
M 28.0064895394029 1.6593e-05 deg
tp 2458483.358071524417
(2018-Dec-30.85807152)
6.9316e-05 TDB
period 1505.761519732005
4.12
1.1327e-05
3.101e-08
d
yr
n .239081684106307 1.7984e-09 deg/d
Q 2.921593763856713 1.4651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1332  
   data-arc span      7856 days (21.51 yr)  
   first obs. used      1997-11-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49368  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:11:49  

Additional Information
 Earth MOID = 1.24599 au 
 Jupiter MOID = 2.09839 au 
 T_jup = 3.402 
[ 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 14.2   n/a MPO493127  
diameter diameter 3.580 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.416   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39871 (1998 DB33)          Discovered 1998-Feb-27 by Forti, G., Tombelli, M. at Cima Ekar
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 DB33 = 2001 XC25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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