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31239 Michaeljames (1998 DV1)
Classification: Main-belt Asteroid          SPK-ID: 2031239
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974194215499804 1.173e-07  
a 2.595577533224765 2.079e-08 AU
q 2.083160118027406 3.0951e-07 AU
i 12.01745734594839 8.2938e-06 deg
node 310.7593896823167 3.6849e-05 deg
peri 70.02584387767229 4.4789e-05 deg
M 97.08328840036619 2.0594e-05 deg
tp 2456588.600358538566
(2013-Oct-23.10035854)
8.6825e-05 JED
period 1527.388218604644
4.18
1.8351e-05
5.024e-08
d
yr
n .2356964625070112 2.8318e-09 deg/d
Q 3.107994948422123 2.4894e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      6794 days (18.60 yr)  
   first obs. used      1996-08-09  
   last obs. used      2015-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51373  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:34:11  

Additional Information
 Earth MOID = 1.11932 AU 
 T_jup = 3.359 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO279841  

31239 Michaeljames           Discovered 1998 Feb. 21 by I. P. Griffin at Cocoa.
Michael James (b. 1970) is a high-school teacher of English at Kenwood High School, Baltimore County, Maryland. During his teaching career he has inspired many students to take a deep interest in literature.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 1998 DV1 = 2000 ON23 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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