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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2055353882884577 6.1476e-08  
a 2.248590643076181 1.6329e-08 AU
q 1.786425692149725 1.3648e-07 AU
i 6.272577252215624 8.6235e-06 deg
node 170.690766911885 6.2086e-05 deg
peri 109.9452660313127 6.6466e-05 deg
M 206.6316006921479 2.428e-05 deg
tp 2457325.183503355235
(2015-Oct-29.68350336)
8.6573e-05 JED
period 1231.583964234634
3.37
1.3415e-05
3.673e-08
d
yr
n .2923065015901872 3.184e-09 deg/d
Q 2.710755594002636 1.9685e-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 = .78165 AU 
 T_jup = 3.593 
[ 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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