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JPL Small-Body Database Browser
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65646 (1981 EE17)
Classification: Inner Main-belt Asteroid          SPK-ID: 2065646
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1348997864890403 5.2639e-08  
a 1.932400232914508 7.5985e-09 au
q 1.67171985408297 1.0273e-07 au
i 27.915576852811 5.9589e-06 deg
node 175.387704694288 7.8641e-06 deg
peri 21.54897198110774 1.4347e-05 deg
M 197.3027402013383 1.2124e-05 deg
tp 2459443.926645498761
(2021-Aug-17.42664550)
3.3743e-05 TDB
period 981.1695204768724
2.69
5.7871e-06
1.584e-08
d
yr
n .3669090738010606 2.1641e-09 deg/d
Q 2.193080611746047 8.6235e-09 au
  Orbit Determination Parameters
   # obs. used (total)      698  
   data-arc span      15201 days (41.62 yr)  
   first obs. used      1978-01-06  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:33:44  

Additional Information
 Earth MOID = .685383 au 
 Jupiter MOID = 2.77767 au 
 T_jup = 3.760 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456904.5 (2014-Sep-04.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1347864964039681 5.2645e-08  
q 1.672123637229572 1.0275e-07 au
tp 2456500.276825027974
(2013-Jul-26.77682503)
3.2999e-05 TDB
node 175.4109056414834 7.8629e-06 deg
peri 21.59497581949613 1.4356e-05 deg
i 27.91456081212023 5.9589e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      698  
   data-arc span      15201 days (41.62 yr)  
   first obs. used      1978-01-06  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:33:44  

Additional Information
 Jupiter MOID = 2.77767 au 
 T_jup = 3.760 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.771449388163304E-15 -5.398186071987437E-15 1.05878682358925E-13 -5.197860467806548E-15 5.775350836329022E-14 -1.209187618240901E-14
q -5.398186071987437E-15 1.055735082888729E-14 -2.525921695680633E-13 9.822932256116514E-15 -1.237343196049861E-13 2.461582417418485E-14
tp 1.05878682358925E-13 -2.525921695680633E-13 1.088947973984277E-9 1.756222753711429E-12 4.033346469473244E-10 2.327656091786593E-12
node -5.197860467806548E-15 9.822932256116514E-15 1.756222753711429E-12 6.182446545300157E-11 -5.339730641963488E-11 1.741105899896693E-11
peri 5.775350836329022E-14 -1.237343196049861E-13 4.033346469473244E-10 -5.339730641963488E-11 2.060904546999974E-10 -1.459574151193782E-11
i -1.209187618240901E-14 2.461582417418485E-14 2.327656091786593E-12 1.741105899896693E-11 -1.459574151193782E-11 3.550883171873827E-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 16.0   n/a MPO432208  

65646 (1981 EE17)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EE17 = 2000 GG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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