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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056048909913372 6.1458e-08  
a 2.247665803575385 1.641e-08 AU
q 1.785534721046311 1.3638e-07 AU
i 6.276814319868236 8.6285e-06 deg
node 170.6631791693078 6.2022e-05 deg
peri 110.1226807699758 6.6417e-05 deg
M 264.9177862526158 2.4671e-05 deg
tp 2457325.581921410070
(2015-Oct-30.08192141)
8.6525e-05 JED
period 1230.824221431683
3.37
1.3479e-05
3.69e-08
d
yr
n .2924869317092666 3.2032e-09 deg/d
Q 2.709796886104459 1.9784e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      452  
   data-arc span      10469 days (28.66 yr)  
   first obs. used      1985-07-20  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59234  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 06:10:31  

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 (327)
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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