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46534 (1981 EU27)
Classification: Main-belt Asteroid          SPK-ID: 2046534
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2566114425983191 3.6989e-08  
a 2.264396823845942 7.4026e-09 au
q 1.683326688263783 8.1114e-08 au
i 6.166382632255727 5.7813e-06 deg
node 171.1737489917052 3.3361e-05 deg
peri 95.13376715621082 3.5872e-05 deg
M 125.1468058190083 1.2184e-05 deg
tp 2458567.842236429457
(2019-Mar-25.34223643)
4.1168e-05 TDB
period 1244.592651534841
3.41
6.1031e-06
1.671e-08
d
yr
n .2892512659110154 1.4184e-09 deg/d
Q 2.845466959428101 9.3021e-09 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      14143 days (38.72 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53507  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Earth MOID = .681909 au 
 Jupiter MOID = 2.27911 au 
 T_jup = 3.566 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457105.5 (2015-Mar-24.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2562200985237357 3.6972e-08  
q 1.684503825518717 8.1e-08 au
tp 2457323.272784284080
(2015-Oct-27.77278428)
3.9107e-05 TDB
node 171.1966409607396 3.335e-05 deg
peri 95.11919077116075 3.5869e-05 deg
i 6.166531257773574 5.7817e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      14143 days (38.72 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53507  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Jupiter MOID = 2.27911 au 
 T_jup = 3.566 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.366925338543734E-15 -2.989518221084491E-15 5.339727609706431E-13 -7.241805432661185E-15 1.260788430927021E-13 -7.104723531935086E-15
q -2.989518221084491E-15 6.560949734362888E-15 -1.145492387845206E-12 1.491515065189176E-14 -2.694023046549489E-13 1.525734742313869E-14
tp 5.339727609706431E-13 -1.145492387845206E-12 1.52935959007618E-9 -1.808450469734577E-11 5.209875675892155E-10 -6.843790206521971E-12
node -7.241805432661185E-15 1.491515065189176E-14 -1.808450469734577E-11 1.112231251918721E-9 -1.110643567819444E-9 -5.189536205758981E-11
peri 1.260788430927021E-13 -2.694023046549489E-13 5.209875675892155E-10 -1.110643567819444E-9 1.28659473888029E-9 4.96602165675659E-11
i -7.104723531935086E-15 1.525734742313869E-14 -6.843790206521971E-12 -5.189536205758981E-11 4.96602165675659E-11 3.342755168230912E-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 MPO337630  

46534 (1981 EU27)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EU27 = 1998 FV11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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