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19948 (1981 EP40)
Classification: Main-belt Asteroid          SPK-ID: 2019948
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2160015101709287 3.4066e-08  
a 2.288648898811438 5.2885e-09 au
q 1.794297280417134 7.6571e-08 au
i 7.101661342760306 3.2899e-06 deg
node 192.6224262834589 2.0757e-05 deg
peri 130.3403354997882 2.1841e-05 deg
M 101.3913890879975 5.9149e-06 deg
tp 2459040.323092964806
(2020-Jul-09.82309296)
2.0547e-05 TDB
period 1264.64079135344
3.46
4.3834e-06
1.2e-08
d
yr
n .2846658137720845 9.8669e-10 deg/d
Q 2.783000517205741 6.4308e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1916  
   data-arc span      14629 days (40.05 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46933  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:17:31  

Additional Information
 Earth MOID = .791648 au 
 Jupiter MOID = 2.58551 au 
 T_jup = 3.559 
[ 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 15.1   n/a MPO337426  

19948 (1981 EP40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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