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469181 (2016 ER201)
Classification: Main-belt Asteroid          SPK-ID: 2469181
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980353374648717 7.3572e-08  
a 2.56741963154869 3.3546e-08 au
q 2.058979818401009 1.9358e-07 au
i 13.5541558680601 6.6304e-06 deg
node 307.7544449284745 3.1346e-05 deg
peri 198.770701517358 3.6527e-05 deg
M 43.20844977910141 1.8447e-05 deg
tp 2458820.152594989143
(2019-Dec-02.65259499)
7.7407e-05 TDB
period 1502.601137875371
4.11
2.9449e-05
8.063e-08
d
yr
n .2395845383885628 4.6956e-09 deg/d
Q 3.075859444696372 4.0189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 04:46:23  

Additional Information
 Earth MOID = 1.07605 au 
 Jupiter MOID = 1.98391 au 
 T_jup = 3.365 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457840.5 (2017-Mar-28.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1987843079190182 7.359e-08  
q 2.056728284466861 1.9372e-07 au
tp 2457317.710570836868
(2015-Oct-22.21057084)
8.6218e-05 TDB
node 307.7710513266576 3.1344e-05 deg
peri 198.8114738954157 3.6482e-05 deg
i 13.55629762980291 6.6317e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 04:46:23  

Additional Information
 Jupiter MOID = 1.98391 au 
 T_jup = 3.365 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.415450811502428E-15 -1.412005804227679E-14 3.327906083801581E-12 -1.41970539062595E-14 6.475867795945357E-13 -2.184628865877918E-14
q -1.412005804227679E-14 3.752900932355343E-14 -9.624338908507474E-12 3.46863531590512E-14 -1.856239417332314E-12 6.201427390122393E-14
tp 3.327906083801581E-12 -9.624338908507474E-12 7.433594813524806E-9 -1.594650468554415E-12 1.664375126501915E-9 -3.159576770201343E-11
node -1.41970539062595E-14 3.46863531590512E-14 -1.594650468554415E-12 9.824197225446412E-10 -9.550507467725443E-10 7.434798681886033E-11
peri 6.475867795945357E-13 -1.856239417332314E-12 1.664375126501915E-9 -9.550507467725443E-10 1.330953431324398E-9 -7.896494377554874E-11
i -2.184628865877918E-14 6.201427390122393E-14 -3.159576770201343E-11 7.434798681886033E-11 -7.896494377554874E-11 4.397993781654632E-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 16.3   n/a MPO380656  

469181 (2016 ER201)          Discovered 2009-Jul-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-06-21

[ show close-approach data ]
Alternate Designations
 2016 ER201 = 2009 OP17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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