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120784 (1998 EY20)
Classification: Main-belt Asteroid          SPK-ID: 2120784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301406512973899 3.7331e-08  
a 2.616824764012241 1.2858e-08 au
q 2.014587008491326 9.5342e-08 au
i 6.373483013783775 4.6391e-06 deg
node 154.2260092451723 2.8745e-05 deg
peri 44.25620944468247 3.0166e-05 deg
M 114.4659007318917 9.4247e-06 deg
tp 2458708.874933984660
(2019-Aug-13.37493398)
3.8653e-05 TDB
period 1546.181200111868
4.23
1.1396e-05
3.12e-08
d
yr
n .2328317017267793 1.7161e-09 deg/d
Q 3.219062519533157 1.5817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      10196 days (27.92 yr)  
   first obs. used      1992-11-17  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58362  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:47  

Additional Information
 Earth MOID = 1.01824 au 
 Jupiter MOID = 1.7478 au 
 T_jup = 3.360 
[ 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 15.77   n/a E2021B55  

120784 (1998 EY20)          Discovered 1998-Mar-03 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ 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
1915-Sep-13 05:47 00:02 Jupiter 1.81702377657118 1.817022736958 1.81702481618487 1.80960297312127 1.53047193306419 2420753.740863342 2.08511916571476 129.179552481683 66.7291152739826 -89.5214571587874 1291782.69840911 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
1929-Jan-14 04:29 00:02 Jupiter 1.88786829763419 1.88786697590883 1.88786961936428 1.45194812631583 1.10037318740418 2425625.686962145 1.86867856773995 255.857137202241 83.1944417508973 -58.1245880708392 2868912.6758744 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
1974-Oct-13 06:01 < 00:01 Jupiter 1.89422690773475 1.89422624168571 1.89422757378347 2.007583177982 1.77089531144953 2442333.750370865 0.897739943887585 63.4881659857039 38.8751014199919 -83.5606425154876 1597758.35184601 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
1988-Feb-12 16:56 < 00:01 Jupiter 1.81429503573687 1.81429452258913 1.8142955488875 1.34550085582418 0.936296823834757 2447204.205485597 0.619117496697776 262.007079904098 96.3857476213558 -35.1212572152922 3179780.76298694 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
2033-Nov-11 23:22 < 00:01 Jupiter 1.98844030118872 1.98843980124827 1.98844080112906 2.285022197688 2.09030615098417 2463913.473534406 0.379772018189741 38.9761144145555 21.4281388828615 82.9461628438149 1936317.22433131 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
2047-Mar-15 08:02 < 00:01 Jupiter 1.76451386988847 1.764513580476 1.76451415930355 1.33541372374758 0.907340344442751 2468784.834716292 0.65685994991457 323.642435949429 88.4121514432709 -30.330436951637 3097947.167384 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
2106-Apr-18 14:13 00:02 Jupiter 1.74143137214794 1.74143107128722 1.74143167301132 1.38320171422311 0.96977220347331 2490368.092222882 1.85958918629701 303.752912605479 172.139852901947 -21.1552211702097 1398511.43771103 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54
2165-May-23 16:15 00:03 Jupiter 1.74480830442722 1.74480772037126 1.74480888848218 1.46770519599261 1.08777407543133 2511953.176882096 3.08685992164728 276.20275115288 185.257353684865 16.1719623906532 933364.657856867 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:49 2020-Nov-12 17:54

Alternate Designations
 1998 EY20 = 2002 AE87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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