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100540 (1997 EK20)
Classification: Main-belt Asteroid          SPK-ID: 2100540
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654155060181028 4.3955e-08  
a 2.277448379042951 8.1918e-09 au
q 1.900723102993453 9.8165e-08 au
i 5.572970644869816 4.1425e-06 deg
node 254.3063902134055 4.7985e-05 deg
peri 69.31653471043317 5.0272e-05 deg
M 170.7327074843278 1.5951e-05 deg
tp 2458605.132029958570
(2019-May-01.63202996)
5.4024e-05 TDB
period 1255.368537013268
3.44
6.7732e-06
1.854e-08
d
yr
n .2867683786758749 1.5472e-09 deg/d
Q 2.654173655092449 9.5469e-09 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      15476 days (42.37 yr)  
   first obs. used      1978-11-05  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47747  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:31:46  

Additional Information
 Earth MOID = .895018 au 
 Jupiter MOID = 2.66065 au 
 T_jup = 3.583 
[ 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 16.10   n/a MPCxxxxx  

100540 (1997 EK20)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1997 EK20 = 1978 VA4 = 2002 VK105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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