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85144 (1981 EU30)
Classification: Main-belt Asteroid          SPK-ID: 2085144
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331139223110265 4.7192e-08  
a 2.345935804344191 9.2828e-09 au
q 2.033659087938063 1.1225e-07 au
i 6.519918306442968 5.125e-06 deg
node 340.7615014751446 3.4487e-05 deg
peri 3.748227599372012 3.7532e-05 deg
M 274.6316186797291 1.5526e-05 deg
tp 2459707.719756332041
(2022-May-08.21975633)
5.7111e-05 TDB
period 1312.419312007393
3.59
7.7898e-06
2.133e-08
d
yr
n .2743025774661659 1.6281e-09 deg/d
Q 2.658212520750319 1.0519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      14752 days (40.39 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:09:39  

Additional Information
 Earth MOID = 1.02521 au 
 Jupiter MOID = 2.72714 au 
 T_jup = 3.540 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.38   n/a MPO614063  

85144 (1981 EU30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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