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JPL Small-Body Database Browser
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35044 (1981 ET40)
Classification: Main-belt Asteroid          SPK-ID: 2035044
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02822162751098708 3.5304e-08  
a 2.636596467331903 1.5388e-08 au
q 2.562187423934077 9.5266e-08 au
i 2.94702193917028 5.2773e-06 deg
node 313.4455014230737 7.4592e-05 deg
peri 297.111004380122 0.00014165 deg
M 255.7322108290484 0.0001236 deg
tp 2459053.409666531086
(2020-Jul-22.90966653)
0.00053817 TDB
period 1563.73776837128
4.28
1.3689e-05
3.748e-08
d
yr
n .2302176280969156 2.0154e-09 deg/d
Q 2.711005510729728 1.5822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      925  
   data-arc span      13930 days (38.14 yr)  
   first obs. used      1981-02-12  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55703  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:45:04  

Additional Information
 Earth MOID = 1.54892 au 
 Jupiter MOID = 2.28767 au 
 T_jup = 3.395 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO436010  

35044 (1981 ET40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ET40 = 1998 FN128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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