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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056048885369962 4.9753e-08  
a 2.247665802450366 1.1591e-08 AU
q 1.785534725669141 1.1591e-07 AU
i 6.276818921495454 7.8558e-06 deg
node 170.6631225292856 4.8909e-05 deg
peri 110.1227347431374 5.4451e-05 deg
M 264.9177888994307 2.192e-05 deg
tp 2457325.581912116657
(2015-Oct-30.08191212)
7.6081e-05 JED
period 1230.824220507591
3.37
9.5211e-06
2.607e-08
d
yr
n .2924869319288633 2.2626e-09 deg/d
Q 2.709796879231591 1.3975e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      10920 days (29.90 yr)  
   first obs. used      1985-07-20  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58157  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 13:08:40  

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 15.8 mag n/a MPO337611  

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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