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517103 (2013 EM20)
Classification: Apollo [NEO, PHA]          SPK-ID: 2517103
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .318151629542169 1.0919e-07  
a 1.371996523880546 1.1753e-08 au
q .935493594081759 1.5658e-07 au
i 8.358539777443013 4.7193e-06 deg
node 73.95518603199754 7.342e-05 deg
peri 350.0932405989876 8.5656e-05 deg
M 255.1618705693261 2.6518e-05 deg
tp 2459171.440396161300
(2020-Nov-17.94039616)
4.3949e-05 TDB
period 586.9862706655933
1.61
7.5427e-06
2.065e-08
d
yr
n .6133022491169855 7.8808e-09 deg/d
Q 1.808499453679333 1.5493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      8554 days (23.42 yr)  
   first obs. used      1997-04-07  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-13 07:27:06  

Additional Information
 Earth MOID = .0422726 au 
 Jupiter MOID = 3.50938 au 
 T_jup = 4.756 
[ 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 19.9   n/a MPO419450  

517103 (2013 EM20)          Discovered 2008-Jan-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2018-05-06

[ hide close-approach data ]
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
1906-Sep-20 08:14 00:04 Earth 0.33492405127274 0.334882028351351 0.334966075086965 15.4581599711387 15.4576453170195 2417473.842967911 4.26431406857142 2266.04521414937 22.6783686358004 22.3761839747599 689843.45994073 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1914-Oct-08 04:51 00:07 Earth 0.166780181270085 0.166753318434051 0.16680704754854 9.75832815500562 9.75669085247803 2420413.702013830 6.87613241538365 1795.26148607478 24.7707476898496 41.7560158087761 558055.698216355 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1915-Feb-09 12:08 00:24 Earth 0.394003676701942 0.393976662597739 0.394030917414184 3.32074960169276 3.31871251655368 2420538.005784074 23.6624932188638 14967.8266334824 20.9021828850072 84.8636703717031 511002.084913489 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1922-Nov-13 18:09 00:09 Earth 0.0778333575561036 0.07782442315166 0.0778422957743723 7.07549194471139 7.07065202103031 2423372.256024631 9.34738110359238 968.9438799719 20.9635195015924 62.6495371599302 470401.351245843 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1930-Dec-19 08:51 00:04 Earth 0.044114180587204 0.0441111390984885 0.044117225503025 7.42454023357066 7.41640064036024 2426329.868518726 3.83657807637247 636.467954517621 18.5586270263984 -76.3147823590292 346187.162675294 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1938-Aug-21 19:31 00:03 Earth 0.424565767691213 0.424556603168874 0.424574932246688 5.1106020720499 5.10937393310932 2429132.313052567 3.10029254441928 493.833239365033 16.6750142644739 -22.4536025940193 536311.446962356 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1939-Jan-13 14:42 00:02 Earth 0.18044423855928 0.180430531912332 0.180457945445412 11.6060331705058 11.604760812474 2429277.112499576 1.98172362551747 758.066195675928 26.2744797157911 -25.6550612411727 383082.379653959 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1947-Jan-28 07:23 00:01 Earth 0.38323437670445 0.383219902303191 0.383248851126447 17.7642049256683 17.7638135382077 2432213.807573306 1.412750620378 735.367325048599 29.2467978687622 -11.0485830419579 326187.825234394 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1959-Sep-20 08:03 00:01 Earth 0.341812068954143 0.341798703251414 0.341825434741566 15.7069998142464 15.7065035207474 2436831.835195222 1.27070096629712 718.534747436213 23.1152014233057 21.9578541066746 684445.539996482 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1967-Oct-08 23:46 00:02 Earth 0.165533162659703 0.16552386425137 0.165542461491716 9.72360722027223 9.72195169082749 2439772.490610493 2.26290681865551 624.465559535611 25.5270170476774 42.1091111022256 539209.784096092 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1968-Feb-09 13:01 00:08 Earth 0.393600880207554 0.393592007321274 0.393609784978503 3.23851201100148 3.23642102555484 2439896.042277636 8.17425791120137 5611.68661305654 20.5052639825602 85.51967980697 512331.703336975 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1975-Nov-17 15:04 00:04 Earth 0.0722378309381046 0.072234537390642 0.0722411251554272 7.0480974314397 7.04286218554314 2442734.127922866 3.57161752774092 386.688624285497 21.6735099062683 65.0586954745054 429491.897632811 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1983-Dec-24 11:14 00:02 Earth 0.0530238441411587 0.053020677244804 0.0530270117052566 7.73261120527712 7.72610994461615 2445692.968180004 1.86459086383251 338.107391091461 18.7289990086265 -62.3306947909936 377646.147300743 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1991-Aug-16 20:16 00:01 Earth 0.450427635231221 0.450424233351481 0.450431037116287 5.81206355931868 5.81104568301343 2448485.344252866 1.03454528995069 186.690564930196 19.8070041137307 -24.9213657296946 664126.802344337 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
1992-Jan-18 01:35 < 00:01 Earth 0.224457468776908 0.224452448217762 0.224462489347882 12.9387706933557 12.9378532047536 2448639.566177363 0.727732378372477 263.325205227845 24.1170101607921 -18.1501983444835 381442.924899396 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2000-Feb-01 14:17 < 00:01 Earth 0.44543353924747 0.445429914721221 0.445437163773795 19.6033395632416 19.6030344206997 2451576.094822417 0.44303927823064 180.971002164172 25.1504061448869 -2.94691103931745 333235.040616155 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2004-Sep-11 08:10 < 00:01 Earth 0.474717533679382 0.474714093319241 0.4747209740416 19.8248266011937 19.8245434810385 2453259.840478262 0.294291905801216 178.637897198964 23.5144318818352 16.335808430749 800668.119046253 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2012-Sep-26 04:48 < 00:01 Earth 0.265478380851972 0.265476734170319 0.265480027535844 13.2396993280391 13.2389412437298 2456196.699960084 0.279239708954326 91.3553816285052 24.1441762163975 27.0364421500323 693286.679323173 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2013-Mar-03 14:34 < 00:01 Earth 0.470610279609473 0.470609520518665 0.47061103870028 5.92061891697593 5.91966256245307 2456355.107042896 0.114305887674406 38.0861512578476 24.0906198018481 8.55560614806745 835317.219076913 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2020-Oct-24 10:19 < 00:01 Earth 0.109934175483355 0.109933357808545 0.109934993158478 7.75206543875543 7.74893828087174 2459146.929712966 0.504148906531751 42.0251520539578 16.8299622750988 15.3695280930317 403770.959978946 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2028-Dec-10 08:42 < 00:01 Earth 0.0440311662333618 0.0440303421820273 0.0440319904526272 7.11084062738571 7.10232549642434 2462115.862829226 0.977926564563552 148.802797218698 12.9929381227388 74.7491984462906 478525.958896492 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2036-Aug-29 16:09 00:02 Earth 0.397060321294181 0.397055973802032 0.397064668789603 4.03127444671749 4.02960948905417 2464935.172637965 2.0030281470363 224.164500520576 14.9833237006212 -15.5671698238432 220425.973859011 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2037-Jan-09 09:33 00:01 Earth 0.138798894802067 0.138791830279951 0.138805959488756 10.3050169495176 10.3031539321757 2465067.897707873 1.05483957444912 425.712378119737 26.3067445782674 -34.2419743757773 399400.931799714 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2045-Jan-25 13:27 < 00:01 Earth 0.336193763150116 0.336182930028258 0.336204596299379 16.3140131556027 16.3135273434634 2468006.060340386 0.880611279336534 561.075329008337 30.2538573256173 -15.707224449887 391662.657070551 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2057-Sep-17 16:20 00:01 Earth 0.384458982186755 0.384446440801686 0.384471523617302 17.0570003587952 17.0565940419208 2472624.180761950 1.40775074890334 659.269799424109 22.4927028265363 18.4654411196208 677698.700980148 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2065-Oct-03 21:59 00:02 Earth 0.198727157647873 0.198715224628024 0.198739090992547 10.9815134991757 10.9802924951926 2475562.416017871 2.41725560958596 717.549910690305 23.4233636109312 34.0067439168208 581076.571789403 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2066-Feb-21 18:20 00:04 Earth 0.425052173831545 0.425041993183785 0.425062354827494 4.64549879040494 4.64414920350849 2475703.263885749 3.90869577708451 791.907825959617 29.5693181837756 50.2620986914124 553158.611536758 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2073-Nov-06 20:47 00:06 Earth 0.0862318997922246 0.0862255396556185 0.0862382612127814 7.20768451199887 7.20339628422712 2478518.365841814 5.84854696910771 614.202712858991 20.5596246503061 58.9682648970652 531283.555422815 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2081-Dec-17 05:21 00:05 Earth 0.0440734127920674 0.0440715671356911 0.0440752646414517 7.31098619731929 7.30271238765746 2481480.723126049 5.15378100825977 844.971166156886 17.6962947566616 -83.8582085499455 370466.183036661 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2089-Aug-24 00:42 00:08 Earth 0.420577198398234 0.42055510711794 0.420599289829478 4.88345054160018 4.8821530709681 2484287.529208174 7.81971046129097 1171.10440928859 16.0494049484748 -20.0747615904152 443208.118905006 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2090-Jan-13 17:10 00:05 Earth 0.173045653395252 0.173010086030371 0.173081222837307 11.3534210859203 11.3520648012368 2484430.215539944 4.94869616607072 2009.96630094981 27.2146861949511 -28.0777911717643 387174.925195462 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2098-Jan-28 17:37 00:05 Earth 0.377219306365468 0.377166402883663 0.377272210261133 17.5276106366723 17.5272076406865 2487367.234360931 4.52711651892168 2710.68472355106 31.1408869450398 -13.2978013371962 355836.146756182 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2110-Sep-22 04:41 00:07 Earth 0.343375395316316 0.343308185173614 0.343442607401474 15.7615560902205 15.7610637663703 2491985.694894143 7.1407671008149 3590.47958728078 22.4452363021545 21.0270998850336 680782.274560861 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2118-Oct-10 23:47 00:16 Earth 0.162736777603452 0.162677999684528 0.162795571256392 9.72674782168527 9.72506438583308 2494926.490912726 15.7235751775101 3868.03218217774 23.9958115799815 40.7397616215373 560237.161832658 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2119-Feb-12 04:57 00:49 Earth 0.393380210370482 0.393319302132444 0.393441791940413 3.30229942550873 3.30024770436412 2495050.706068928 48.6096066362267 25853.7297721848 22.072661152214 83.2763777224738 488753.625307185 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2126-Nov-19 22:57 00:31 Earth 0.0692287532149812 0.0691997176774541 0.0692578386075408 7.03756871854048 7.03209765141854 2497888.456552406 30.9951708221117 3269.53274014272 14.7429715519249 63.693788156028 601113.566277952 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2134-Dec-26 18:41 00:23 Earth 0.0574335744989827 0.0573919942153963 0.0574752700882122 7.79641582931043 7.79046308341176 2500847.278389266 22.7621127986702 4559.93199504329 22.3575049872095 -62.9251155859494 339532.237811415 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2142-Aug-17 18:03 00:16 Earth 0.456367412844647 0.456313903914349 0.45642092286703 5.91840940598061 5.91742283366219 2503638.252275242 15.6432216670069 2891.26333859787 19.2308841926882 -22.7374141333701 636231.634709104 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2143-Jan-20 14:07 00:11 Earth 0.233984979225951 0.233886264334743 0.23408370064409 13.1935189779425 13.1926558445111 2503794.088428799 11.1583595724208 5294.40045047618 28.293747854934 -21.6086025911381 385149.184769754 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2151-Feb-04 05:48 00:09 Earth 0.457936208213574 0.457828841171535 0.45804357613066 19.9507688523487 19.950477209783 2506730.741860303 8.68112595083142 5446.24575581908 32.4432987821343 -10.5676734253116 335513.198306508 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2155-Sep-14 22:08 00:10 Earth 0.462132042504126 0.462029022295643 0.46223506459369 19.4701210959945 19.4698249670048 2508414.422183993 9.5320697347687 5343.50190152399 22.5790650865707 15.975573970322 719351.357788899 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2163-Sep-30 06:04 00:14 Earth 0.253554418894459 0.253456854073219 0.253651993898945 12.8874933802717 12.8866779506993 2511351.752803092 13.5118579128455 5485.73470042295 22.9619462109962 27.5205026244769 621875.022537294 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2164-Mar-04 01:23 00:19 Earth 0.463388870044865 0.463326658381741 0.463451086996366 5.75890194646463 5.75790340816525 2511507.557889912 19.0444081979645 3964.83575951477 27.8437523897884 38.565391254166 695052.461306575 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2171-Oct-30 01:12 00:35 Earth 0.101377788530272 0.101329611172634 0.101426021133778 7.58630310247938 7.58283782071482 2514303.549725336 35.4201288951504 4439.90006038756 23.7839455444952 57.2347609519348 521565.266872633 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2179-Dec-15 22:38 00:32 Earth 0.0444818618355891 0.0444813940709824 0.0444824623756473 7.19997112265937 7.19164678332516 2517272.443014339 32.1081813871839 4722.06460281465 15.078410590922 -89.7449130909237 436694.552191805 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2187-Aug-27 20:25 00:45 Earth 0.415337201139766 0.415215574721714 0.415458831470852 4.66787505927645 4.66650052286409 2520084.350716298 44.71168061008 6389.69772085807 15.7679542566757 -18.6470706226835 381617.298801712 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2188-Jan-15 01:23 00:27 Earth 0.166466679796818 0.166282197719028 0.166651227181138 11.0953819318426 11.0939392484966 2520224.557528856 27.3958783764739 10568.5898381712 27.0194165499494 -29.4837786136573 394017.74281344 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27
2196-Jan-30 23:54 00:24 Earth 0.377631366892492 0.377359612396225 0.377903132182201 17.5377042557555 17.5373019312043 2523162.496032112 23.9707452922615 13920.5087952898 31.1030812796946 -13.227977226973 354154.211371276 T 39 CATAB v2.0f-lin.ifort 2020-Sep-13 07:27:14 2020-Sep-13 07:27

Alternate Designations
 2013 EM20 = 2008 AO112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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