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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989195055396427 9.8416e-08  
a 2.592692940426953 2.0453e-08 au
q 2.076955742701101 2.6173e-07 au
i 12.01251269297335 7.646e-06 deg
node 310.7260879428525 3.5866e-05 deg
peri 69.96744021213919 4.0793e-05 deg
M 238.6954228676793 1.8025e-05 deg
tp 2458114.306675061237
(2017-Dec-26.80667506)
7.8556e-05 JED
period 1524.84273384241
4.17
1.8043e-05
4.94e-08
d
yr
n .2360899206260082 2.7936e-09 deg/d
Q 3.108430138152805 2.4521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      737  
   data-arc span      7188 days (19.68 yr)  
   first obs. used      1996-08-09  
   last obs. used      2016-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51576  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:57:41  

Additional Information
 Earth MOID = 1.112 au 
 Jupiter MOID = 2.49831 au 
 T_jup = 3.360 
[ 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 13.6 mag n/a MPO337518  

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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