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413995 (2007 EW157)
Classification: Main-belt Asteroid          SPK-ID: 2413995
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1411158440471751 5.9715e-08  
a 2.678483067371323 2.7048e-08 au
q 2.300506668553152 1.5848e-07 au
i 3.888802293196362 6.2209e-06 deg
node 125.5100801861493 0.00010236 deg
peri 290.9710197902832 0.00010831 deg
M 85.33803449297918 3.222e-05 deg
tp 2458620.947444447212
(2019-May-17.44744445)
0.00014097 TDB
period 1601.14913368722
4.38
2.4253e-05
6.64e-08
d
yr
n .2248385190522327 3.4057e-09 deg/d
Q 3.056459466189494 3.0865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6673 days (18.27 yr)  
   first obs. used      2001-12-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 13:22:42  

Additional Information
 Earth MOID = 1.31594 au 
 Jupiter MOID = 2.27762 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457626.5 (2016-Aug-26.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398080276391669 5.9418e-08  
q 2.305465264667701 1.5722e-07 au
tp 2457020.165286678199
(2014-Dec-28.66528668)
0.00013612 TDB
node 125.5484801656002 0.00010235 deg
peri 291.1667612795492 0.00010845 deg
i 3.888106656459161 6.2197e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6673 days (18.27 yr)  
   first obs. used      2001-12-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 13:22:42  

Additional Information
 Jupiter MOID = 2.27762 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.530495200294085E-15 -9.24329399103009E-15 -2.198828348735923E-12 -5.990171287512248E-15 -5.70114311077032E-13 -6.667974690916824E-15
q -9.24329399103009E-15 2.471969167055574E-14 6.479676988693828E-12 5.826316128613969E-15 1.7324781074974E-12 1.807922607746064E-14
tp -2.198828348735923E-12 6.479676988693828E-12 1.852853870632962E-8 -1.298923750142092E-11 4.923531242263377E-9 1.093215862203373E-11
node -5.990171287512248E-15 5.826316128613969E-15 -1.298923750142092E-11 1.047562551041711E-8 -1.045499309524098E-8 5.644311061403909E-11
peri -5.70114311077032E-13 1.7324781074974E-12 4.923531242263377E-9 -1.045499309524098E-8 1.176106612622119E-8 -5.34098102118635E-11
i -6.667974690916824E-15 1.807922607746064E-14 1.093215862203373E-11 5.644311061403909E-11 -5.34098102118635E-11 3.868473640754478E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO455949  

413995 (2007 EW157)          Discovered 2007-Mar-13 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-11-10

Alternate Designations
 2007 EW157 = 2001 XT263 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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