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JPL Small-Body Database Browser
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46641 (1995 EY)
Classification: Main-belt Asteroid          SPK-ID: 2046641
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2728266933657296 3.8307e-08  
a 2.637041325599335 1.1472e-08 au
q 1.917586060467288 1.0477e-07 au
i 4.457299584851317 4.2842e-06 deg
node 324.7011128106674 4.6038e-05 deg
peri 143.4977845082364 4.6886e-05 deg
M 263.215208365972 7.533e-06 deg
tp 2459021.012053778940
(2020-Jun-20.51205378)
3.3909e-05 TDB
period 1564.133546237795
4.28
1.0206e-05
2.794e-08
d
yr
n .2301593753716917 1.5019e-09 deg/d
Q 3.356496590731382 1.4601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1096  
   data-arc span      23418 days (64.11 yr)  
   first obs. used      1955-10-24  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:56:22  

Additional Information
 Earth MOID = .936667 au 
 Jupiter MOID = 1.79317 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2716976591793305 3.8585e-08  
q 1.922075429782486 1.0563e-07 au
tp 2455890.890407766643
(2011-Nov-25.39040777)
3.0961e-05 TDB
node 324.7916403220842 4.5992e-05 deg
peri 143.5075058865925 4.6846e-05 deg
i 4.458162833906648 4.2847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1096  
   data-arc span      23418 days (64.11 yr)  
   first obs. used      1955-10-24  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:56:22  

Additional Information
 Jupiter MOID = 1.79317 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.488812779651373E-15 -4.065103086129247E-15 4.002328395925633E-13 -9.225986112328185E-15 1.604131275326178E-13 -1.309853746305007E-15
q -4.065103086129247E-15 1.115801649677203E-14 -1.102183287648079E-12 2.504227539976885E-14 -4.319683420066243E-13 3.895181046820436E-15
tp 4.002328395925633E-13 -1.102183287648079E-12 9.586013918449384E-10 -6.845313110859695E-12 2.812886199166856E-10 1.241282803492911E-12
node -9.225986112328185E-15 2.504227539976885E-14 -6.845313110859695E-12 2.115220575862829E-9 -2.110596760556476E-9 2.541377453965351E-11
peri 1.604131275326178E-13 -4.319683420066243E-13 2.812886199166856E-10 -2.110596760556476E-9 2.194580302886307E-9 -2.499552867376956E-11
i -1.309853746305007E-15 3.895181046820436E-15 1.241282803492911E-12 2.541377453965351E-11 -2.499552867376956E-11 1.835847736987877E-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 15.0   n/a MPO502466  

46641 (1995 EY)          Discovered 1995-Mar-05 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1995 EY = 1991 GH14 = 1998 XS46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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