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52686 (1998 EN11)
Classification: Main-belt Asteroid          SPK-ID: 2052686
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597753647753178 3.6004e-08  
a 3.156175594417805 2.4035e-08 au
q 2.651896487524745 1.1909e-07 au
i 26.66073715813245 5.9964e-06 deg
node 159.6955493194975 9.0914e-06 deg
peri 77.06267195118359 2.0976e-05 deg
M 298.7006179233911 1.9338e-05 deg
tp 2459349.233572380987
(2021-May-14.73357238)
0.00011159 TDB
period 2048.048149983901
5.61
2.3395e-05
6.405e-08
d
yr
n .1757771173508932 2.0079e-09 deg/d
Q 3.660454701310865 2.7876e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      9387 days (25.70 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:25:26  

Additional Information
 Earth MOID = 1.78261 au 
 Jupiter MOID = 1.68242 au 
 T_jup = 3.023 
[ 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 14.2   n/a MPO337679  
diameter diameter 9.162 km 0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52686 (1998 EN11)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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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
1928-Feb-27 23:01 00:02 Jupiter 1.7795827915136 1.77958099585845 1.77958458720932 6.91876866797926 6.84962963001507 2425304.458926579 2.21832465120553 465.970869948762 32.3317331659987 79.6152950933402 2998566.22161829 T 20 CATAB v2.0f-lin.ifort 2020-May-20 10:25:42 2020-May-20 10:25
1939-Jan-07 10:52 00:02 Jupiter 1.82675134109901 1.82674943432281 1.82675324790596 7.24771516289807 7.18345468103744 2429270.952680903 1.95822118523333 407.0764762462 29.5909202277107 -77.2126649799073 3788935.40703085 T 20 CATAB v2.0f-lin.ifort 2020-May-20 10:25:42 2020-May-20 10:25
2023-Apr-16 12:37 < 00:01 Jupiter 1.92073320720664 1.9207324354962 1.9207339789173 6.757768670512 6.69219389231195 2460051.025530713 0.432541621259504 100.019937088864 34.7448872481713 81.0920393256264 2803571.64853732 T 20 CATAB v2.0f-lin.ifort 2020-May-20 10:25:42 2020-May-20 10:25
2034-Feb-20 23:37 < 00:01 Jupiter 1.7384708684295 1.73847022463025 1.73847151223023 7.1781844476797 7.10998498680948 2464014.484046576 0.595621543988213 147.132247721309 26.2832436955754 -82.928820464146 3668153.74278034 T 20 CATAB v2.0f-lin.ifort 2020-May-20 10:25:42 2020-May-20 10:25
2129-Apr-07 14:22 00:03 Jupiter 1.70440396419094 1.70440336701735 1.70440456138662 7.09290253899526 7.02248846012776 2498758.098699383 2.9576857462782 721.594628916809 26.511400853441 -89.0214484868049 3514967.27711194 T 20 CATAB v2.0f-lin.ifort 2020-May-20 10:25:42 2020-May-20 10:25

Alternate Designations
 1998 EN11 = 1994 PY15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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