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305493 (2008 EQ40)
Classification: Main-belt Asteroid          SPK-ID: 2305493
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1591855597402561 4.9566e-08  
a 3.13115563252618 3.472e-08 au
q 2.632720870528644 1.5603e-07 au
i 8.382694401000466 7.6536e-06 deg
node 211.9779210017393 3.716e-05 deg
peri 277.3814911292054 4.7671e-05 deg
M 114.9706823840533 2.6619e-05 deg
tp 2458354.191277791581
(2018-Aug-23.69127779)
0.00014766 TDB
period 2023.743228885131
5.54
3.3661e-05
9.216e-08
d
yr
n .1778881801118228 2.9588e-09 deg/d
Q 3.629590394523715 4.0247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      7228 days (19.79 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:47  

Additional Information
 Earth MOID = 1.66392 au 
 Jupiter MOID = 1.55719 au 
 T_jup = 3.177 
[ 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 15.9   n/a MPO433969  

305493 (2008 EQ40)          Discovered 2008-Mar-04 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1939-Jun-23 14:40 00:04 Jupiter 1.60885285402924 1.60885143994717 1.60885426812867 2.34816672954481 2.11209253221641 2429438.110838525 4.14230813487361 369.156667108349 43.2053685884614 -84.4421113767069 959773.616038141 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
1949-Jun-28 09:39 00:04 Jupiter 1.67248545283061 1.67248398106786 1.67248692464156 1.36547227284243 0.922834647004699 2433095.902133284 3.74353901987741 1141.99793624852 123.830200956166 36.3296188736722 2390296.74248957 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2011-Nov-04 08:08 < 00:01 Jupiter 1.89732181780218 1.89732078451673 1.89732285108752 3.97751649139339 3.86364804829633 2455869.839111947 0.453868167715091 60.9909471744313 37.5093562350476 58.5918184207885 1643329.9508813 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2022-Jan-01 18:44 < 00:01 Jupiter 1.54718548645652 1.54718469827468 1.54718627463695 1.69738166353448 1.33648197146557 2459581.280233122 0.781815774496801 173.974984975653 151.601699874755 -0.911098758299384 843491.472508818 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2032-Jan-02 11:01 00:01 Jupiter 1.80815466072643 1.80815336793475 1.80815595351646 2.10724404209555 1.8717867900539 2463233.958762049 1.33047109851529 124.120167271017 40.9603193864627 87.0769170500126 802802.569115163 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2094-May-29 17:21 00:04 Jupiter 1.72517912750439 1.72517647896963 1.72518177606249 3.26285288319861 3.10873862114708 2486027.222780956 4.3490862819448 368.707534272399 32.5150582884292 75.2099816004798 1360426.39249464 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2104-Jul-08 15:12 00:06 Jupiter 1.57332358626779 1.57332206008729 1.57332511247663 1.21247949680825 0.627197195951588 2489719.133148426 5.59205704837321 2988.50026060483 267.346235556233 11.3258102853834 1084269.18130243 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2114-Jul-20 00:33 00:06 Jupiter 1.974422588476 1.97441915095964 1.97442602599832 2.95247122731539 2.80340706723531 2493382.522967609 5.58420463432395 275.504836145102 43.2623680794789 70.7073669811049 788139.66133674 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2176-Dec-16 19:43 00:09 Jupiter 1.58487986150562 1.58487675549273 1.58488296766942 2.63033642763944 2.41863403129997 2516178.321688449 8.86661800925049 854.240354955438 32.1229606858772 87.8398777414168 1111752.4437388 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
2187-Jan-07 00:27 00:11 Jupiter 1.66342269875966 1.66341820594213 1.66342719153786 1.18007546198848 0.611693440294472 2519851.518820862 10.7460405916858 4712.07423482783 310.284451665114 10.3716622302489 650693.8871337 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:11:47 2020-Nov-11 19:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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