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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056048949040261 5.752e-08  
a 2.247665804820554 1.5006e-08 AU
q 1.785534713241051 1.293e-07 AU
i 6.276814671669268 8.6147e-06 deg
node 170.6631632116014 5.8989e-05 deg
peri 110.1226970758405 6.3519e-05 deg
M 264.9177849369722 2.4032e-05 deg
tp 2457325.581926178332
(2015-Oct-30.08192618)
8.4059e-05 JED
period 1230.824222454467
3.37
1.2326e-05
3.375e-08
d
yr
n .2924869314662173 2.929e-09 deg/d
Q 2.709796896400057 1.8091e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      10814 days (29.61 yr)  
   first obs. used      1985-07-20  
   last obs. used      2015-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58541  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 16:14:21  

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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