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30760 (1981 EY41)
Classification: Main-belt Asteroid          SPK-ID: 2030760
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1487471504492578 5.1222e-08  
a 2.365536052744738 7.7854e-09 au
q 2.013669305613973 1.2065e-07 au
i 1.637102157389569 6.5494e-06 deg
node 191.6914143415665 0.00013513 deg
peri 313.0688008045973 0.00013643 deg
M 358.7219321203204 1.7455e-05 deg
tp 2459205.217850813067
(2020-Dec-21.71785081)
6.4437e-05 TDB
period 1328.901476758916
3.64
6.5605e-06
1.796e-08
d
yr
n .2709004439350999 1.3374e-09 deg/d
Q 2.717402799875503 8.9435e-09 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      14648 days (40.10 yr)  
   first obs. used      1981-02-13  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59195  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:25  

Additional Information
 Earth MOID = 1.02611 au 
 Jupiter MOID = 2.29237 au 
 T_jup = 3.533 
[ 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 16.87   n/a MPCxxxxx  

30760 (1981 EY41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EY41 = 1999 BW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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