Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
305507 (2008 EK117)
Classification: Main-belt Asteroid          SPK-ID: 2305507
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1072772658441813 5.4106e-08  
a 3.071390544171105 3.4035e-08 au
q 2.741900164252757 1.6023e-07 au
i 11.77838747541488 8.0508e-06 deg
node 14.99054482910544 3.1772e-05 deg
peri 134.1009093629477 5.7505e-05 deg
M 131.1071097654285 4.458e-05 deg
tp 2458284.480691295679
(2018-Jun-14.98069130)
0.00024441 TDB
period 1966.079121069345
5.38
3.268e-05
8.947e-08
d
yr
n .1831055506068327 3.0436e-09 deg/d
Q 3.400880924089452 3.7687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65114  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Earth MOID = 1.76618 au 
 Jupiter MOID = 1.61659 au 
 T_jup = 3.190 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457302.5 (2015-Oct-07.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069225453582097 5.3384e-08  
q 2.739322115971893 1.5713e-07 au
tp 2458277.213949358822
(2018-Jun-07.71394936)
0.00024683 TDB
node 15.18979350830862 3.1705e-05 deg
peri 132.4026812112719 5.7989e-05 deg
i 11.79356711329859 8.0638e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65114  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Jupiter MOID = 1.61659 au 
 T_jup = 3.190 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.849893511381278E-15 -8.252526577752031E-15 2.276343183663792E-12 -1.33580431858449E-14 4.024162934579157E-13 -9.998682283794128E-15
q -8.252526577752031E-15 2.468982649129449E-14 -7.16963793518874E-12 2.392781207500034E-14 -1.352957395625742E-12 2.869859265229112E-14
tp 2.276343183663792E-12 -7.16963793518874E-12 6.092665155857799E-8 1.380566733011013E-10 1.201492425979827E-8 1.102886320174717E-11
node -1.33580431858449E-14 2.392781207500034E-14 1.380566733011013E-10 1.005222701506754E-9 -9.549245539495557E-10 8.821909285416795E-11
peri 4.024162934579157E-13 -1.352957395625742E-12 1.201492425979827E-8 -9.549245539495557E-10 3.362683867704477E-9 -8.398480650103035E-11
i -9.998682283794128E-15 2.869859265229112E-14 1.102886320174717E-11 8.821909285416795E-11 -8.398480650103035E-11 6.50246275487877E-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 16.3   n/a MPO476361  

305507 (2008 EK117)          Discovered 2008-Mar-08 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 EK117 = 2005 SE197 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-18 12:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin