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120784 (1998 EY20)
Classification: Main-belt Asteroid          SPK-ID: 2120784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301406520007796 3.7038e-08  
a 2.616824765771347 1.2786e-08 au
q 2.014587008004942 9.4685e-08 au
i 6.373482858797513 4.6322e-06 deg
node 154.2260079701539 2.8673e-05 deg
peri 44.25621125382867 3.0097e-05 deg
M 114.4658998191082 9.4144e-06 deg
tp 2458708.874937409291
(2019-Aug-13.37493741)
3.8624e-05 TDB
period 1546.18120167095
4.23
1.1332e-05
3.103e-08
d
yr
n .2328317014920049 1.7064e-09 deg/d
Q 3.219062523537753 1.5728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      10196 days (27.92 yr)  
   first obs. used      1992-11-17  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:07  

Additional Information
 Earth MOID = 1.01824 au 
 Jupiter MOID = 1.7478 au 
 T_jup = 3.360 
[ 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 15.77   n/a E2021B55  

120784 (1998 EY20)          Discovered 1998-Mar-03 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 EY20 = 2002 AE87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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