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117688 (2005 EX268)
Classification: Main-belt Asteroid          SPK-ID: 2117688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02448063181342124 4.568e-08  
a 2.851391731069862 2.1821e-08 au
q 2.781587859945707 1.3019e-07 au
i 2.803853583047502 5.7311e-06 deg
node 52.67653555148399 0.00010125 deg
peri 221.8925817636976 0.00015309 deg
M 343.7645473286408 0.00011445 deg
tp 2459079.813233674729
(2020-Aug-18.31323367)
0.00055912 TDB
period 1758.667571571464
4.81
2.0188e-05
5.527e-08
d
yr
n .2047004253784703 2.3498e-09 deg/d
Q 2.921195602194016 2.2355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      9685 days (26.52 yr)  
   first obs. used      1992-09-27  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:06:08  

Additional Information
 Earth MOID = 1.7661 au 
 Jupiter MOID = 2.08479 au 
 T_jup = 3.303 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456275.5 (2012-Dec-14.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02156237256218946 4.6466e-08  
q 2.792255886059068 1.3142e-07 au
tp 2455535.827855486068
(2010-Dec-05.32785549)
0.00063072 TDB
node 52.79437686873075 0.00010084 deg
peri 216.4799667767846 0.00016384 deg
i 2.80964264633044 5.7403e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      9685 days (26.52 yr)  
   first obs. used      1992-09-27  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:06:08  

Additional Information
 Jupiter MOID = 2.08479 au 
 T_jup = 3.303 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.159082405947622E-15 -6.021128018601452E-15 -5.482885288293621E-12 -1.94757727917712E-15 -1.133504804306326E-12 -3.598566054566844E-16
q -6.021128018601452E-15 1.727158830612324E-14 1.515919653174954E-11 9.184473839255665E-15 3.169583977886651E-12 1.136113373657532E-15
tp -5.482885288293621E-12 1.515919653174954E-11 3.978115638549128E-7 8.462795643922551E-12 8.146943166499798E-8 -1.134559603590414E-11
node -1.94757727917712E-15 9.184473839255665E-15 8.462795643922551E-12 1.016851750996184E-8 -1.01538638672231E-8 -5.612891663869774E-11
peri -1.133504804306326E-12 3.169583977886651E-12 8.146943166499798E-8 -1.01538638672231E-8 2.684436643633632E-8 5.376425451125586E-11
i -3.598566054566844E-16 1.136113373657532E-15 -1.134559603590414E-11 -5.612891663869774E-11 5.376425451125586E-11 3.295057920151992E-11

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 15.9   n/a MPO432680  

117688 (2005 EX268)          Discovered 2005-Mar-14 by Mt. Lemmon Survey at Mt. Lemmon
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2005 EX268 = 1995 FM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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