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227500 (2005 XE78)
Classification: Main-belt Asteroid          SPK-ID: 2227500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555515457180008 6.0835e-08  
a 2.608105865548083 2.4935e-08 au
q 2.202410966765894 1.5832e-07 au
i 18.44463625932895 7.4353e-06 deg
node 54.25490024488838 2.5359e-05 deg
peri 21.40965436053746 4.4323e-05 deg
M 216.9064002372497 3.6756e-05 deg
tp 2459812.010557141031
(2022-Aug-20.51055714)
0.00016172 TDB
period 1538.460147314557
4.21
2.2063e-05
6.041e-08
d
yr
n .2340002115936473 3.3558e-09 deg/d
Q 3.013800764330271 2.8814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      6722 days (18.40 yr)  
   first obs. used      2002-01-25  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:40:01  

Additional Information
 Earth MOID = 1.2235 au 
 Jupiter MOID = 2.35537 au 
 T_jup = 3.322 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457280.5 (2015-Sep-15.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .157136097121084 6.0411e-08  
q 2.196177668765618 1.5655e-07 au
tp 2456739.171165674962
(2014-Mar-22.67116567)
0.00014151 TDB
node 54.28809010996508 2.5342e-05 deg
peri 21.62790509740801 4.3971e-05 deg
i 18.4608082851591 7.4389e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      6722 days (18.40 yr)  
   first obs. used      2002-01-25  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:40:01  

Additional Information
 Jupiter MOID = 2.35537 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.649477439895204E-15 -9.373483005494304E-15 -3.718327335389012E-12 -4.117932231579659E-14 -1.036146033429775E-12 1.247857645033721E-14
q -9.373483005494304E-15 2.450862240371192E-14 1.047197659848106E-11 1.156405484639144E-13 2.912069835460911E-12 -3.640518394904646E-14
tp -3.718327335389012E-12 1.047197659848106E-11 2.002447058374604E-8 1.57029864761912E-10 5.159151778241847E-9 -8.09956700642075E-11
node -4.117932231579659E-14 1.156405484639144E-13 1.57029864761912E-10 6.42216873948205E-10 -5.671881698881326E-10 -8.631796042098462E-11
peri -1.036146033429775E-12 2.912069835460911E-12 5.159151778241847E-9 -5.671881698881326E-10 1.933441817980545E-9 6.105820794529215E-11
i 1.247857645033721E-14 -3.640518394904646E-14 -8.09956700642075E-11 -8.631796042098462E-11 6.105820794529215E-11 5.533778429678999E-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 MPO268235  

227500 (2005 XE78)          Discovered 2005-Dec-02 by CSS at Catalina
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2005 XE78 = 2002 BV20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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