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187168 (2005 SR8)
Classification: Main-belt Asteroid          SPK-ID: 2187168
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03706723463274245 7.7056e-08  
a 3.150964043081517 4e-08 au
q 3.03416651957728 2.4402e-07 au
i 4.447110276341394 8.3104e-06 deg
node 20.39851389287132 8.2595e-05 deg
peri 175.0942544818202 0.00011924 deg
M 88.57886267657257 8.3856e-05 deg
tp 2458697.820474073686
(2019-Aug-02.32047407)
0.00047807 TDB
period 2042.977566716203
5.59
3.8902e-05
1.065e-07
d
yr
n .176213388666156 3.3554e-09 deg/d
Q 3.267761566585755 4.1483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      6267 days (17.16 yr)  
   first obs. used      2002-02-12  
   last obs. used      2019-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:17  

Additional Information
 Earth MOID = 2.03134 au 
 Jupiter MOID = 1.68675 au 
 T_jup = 3.202 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03583273671937149 7.8123e-08  
q 3.033022200262683 2.475e-07 au
tp 2456632.048828062452
(2013-Dec-05.54882806)
0.00048901 TDB
node 20.50642104459118 8.253e-05 deg
peri 170.1626215427557 0.00011942 deg
i 4.450856077178154 8.3129e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      6267 days (17.16 yr)  
   first obs. used      2002-02-12  
   last obs. used      2019-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:17  

Additional Information
 Jupiter MOID = 1.68675 au 
 T_jup = 3.202 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.103128553785193E-15 -1.908713753092952E-14 -9.581655304292179E-12 2.562515647843131E-14 -1.810930885372545E-12 -5.776577756145254E-16
q -1.908713753092952E-14 6.125403462326491E-14 2.468417734875984E-11 -1.02236178946386E-13 4.758776229142857E-12 4.406720191923933E-15
tp -9.581655304292179E-12 2.468417734875984E-11 2.391317148408732E-7 9.551600951939389E-11 4.22457601110602E-8 -2.180321139778702E-11
node 2.562515647843131E-14 -1.02236178946386E-13 9.551600951939389E-11 6.811266583793536E-9 -6.775095017992887E-9 -2.525241898780716E-10
peri -1.810930885372545E-12 4.758776229142857E-12 4.22457601110602E-8 -6.775095017992887E-9 1.426001025867801E-8 2.480297675236667E-10
i -5.776577756145254E-16 4.406720191923933E-15 -2.180321139778702E-11 -2.525241898780716E-10 2.480297675236667E-10 6.910487844488737E-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 15.7   n/a MPO433232  

187168 (2005 SR8)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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