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117543 (2005 EM1)
Classification: Main-belt Asteroid          SPK-ID: 2117543
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1500857371084046 3.8424e-08  
a 2.382934273818119 9.1034e-09 au
q 2.025289826851246 9.2186e-08 au
i 2.36783228456959 3.7349e-06 deg
node 91.66573106348153 0.00012025 deg
peri 156.1242075042331 0.00012141 deg
M 347.4739234449713 1.5504e-05 deg
tp 2459047.249727463251
(2020-Jul-16.74972746)
5.7824e-05 TDB
period 1343.589256606741
3.68
7.6993e-06
2.108e-08
d
yr
n .2679390284119914 1.5354e-09 deg/d
Q 2.740578720784991 1.047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      16058 days (43.96 yr)  
   first obs. used      1976-06-29  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5289  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:50:31  

Additional Information
 Earth MOID = 1.01175 au 
 Jupiter MOID = 2.28305 au 
 T_jup = 3.521 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO320349  

117543 (2005 EM1)          Discovered 2005-Mar-03 by Lowe, A. at New Mexico Skies
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2005 EM1 = 1991 PN22 = 2003 WY131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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