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44042 (1998 ES9)
Classification: Main-belt Asteroid          SPK-ID: 2044042
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056049098238143 5.2202e-08  
a 2.247665809691231 1.2707e-08 AU
q 1.785534683575595 1.2008e-07 AU
i 6.276817453336556 8.3804e-06 deg
node 170.6631307580921 5.324e-05 deg
peri 110.1227309093018 5.8216e-05 deg
M 264.9177800343903 2.2631e-05 deg
tp 2457325.581943996721
(2015-Oct-30.08194400)
7.8759e-05 JED
period 1230.82422645525
3.37
1.0437e-05
2.857e-08
d
yr
n .2924869305154914 2.4803e-09 deg/d
Q 2.709796935806867 1.5319e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      10844 days (29.69 yr)  
   first obs. used      1985-07-20  
   last obs. used      2015-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58708  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 18:02:31  

Additional Information
 Earth MOID = .782605 AU 
 T_jup = 3.594 
[ 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 15.7 mag n/a MPO250625  

44042 (1998 ES9)          Discovered 1998-Mar-02 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 ES9 = 1985 OG1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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