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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372942876673655 3.9046e-08  
a 2.572442610875947 1.3138e-08 au
q 2.219260935050556 9.871e-08 au
i 8.307066566585322 4.4107e-06 deg
node 75.74047481251056 2.869e-05 deg
peri 92.54780244351657 3.345e-05 deg
M 123.2820767921283 1.6458e-05 deg
tp 2458484.423111929224
(2018-Dec-31.92311193)
6.8532e-05 TDB
period 1507.012897087585
4.13
1.1545e-05
3.161e-08
d
yr
n .2388831579980018 1.83e-09 deg/d
Q 2.925624286701338 1.4942e-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 = 1.24426 au 
 Jupiter MOID = 2.0928 au 
 T_jup = 3.401 
[ 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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