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181769 (1997 CR25)
Classification: Main-belt Asteroid          SPK-ID: 2181769
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1024000499330181 5.8087e-08  
a 3.135830178060701 2.8598e-08 au
q 2.81472101124582 1.8339e-07 au
i 3.302989546684877 7.7388e-06 deg
node 25.10769524086406 9.6749e-05 deg
peri 38.04022393138557 0.00010302 deg
M 168.0527698165469 3.4851e-05 deg
tp 2458253.673501527722
(2018-May-15.17350153)
0.00019306 TDB
period 2028.276831272188
5.55
2.7746e-05
7.596e-08
d
yr
n .1774905646258349 2.428e-09 deg/d
Q 3.456939344875582 3.1527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      8919 days (24.42 yr)  
   first obs. used      1995-11-21  
   last obs. used      2020-04-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56792  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:57  

Additional Information
 Earth MOID = 1.82807 au 
 Jupiter MOID = 1.83821 au 
 T_jup = 3.201 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457257.5 (2015-Aug-23.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1029279796925115 5.7795e-08  
q 2.813580559412357 1.8248e-07 au
tp 2458257.207282982715
(2018-May-18.70728298)
0.00019286 TDB
node 25.13151371708921 9.6749e-05 deg
peri 38.85848270475175 0.000103 deg
i 3.303107584048894 7.7381e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      8919 days (24.42 yr)  
   first obs. used      1995-11-21  
   last obs. used      2020-04-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56792  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:57  

Additional Information
 Jupiter MOID = 1.83821 au 
 T_jup = 3.201 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.340257874133336E-15 -1.044136337662524E-14 -3.457290820733565E-12 -1.294628084325532E-14 -6.239271787878144E-13 -4.218211275673232E-16
q -1.044136337662524E-14 3.329754969654084E-14 1.189689100102165E-11 4.466724137674464E-14 2.084456240635801E-12 1.865435540052902E-15
tp -3.457290820733565E-12 1.189689100102165E-11 3.719551448063723E-8 5.36173305010598E-11 6.825153690287134E-9 -5.326800235987789E-12
node -1.294628084325532E-14 4.466724137674464E-14 5.36173305010598E-11 9.360351741759388E-9 -9.334607272903086E-9 -4.191457332139176E-11
peri -6.239271787878144E-13 2.084456240635801E-12 6.825153690287134E-9 -9.334607272903086E-9 1.060842941782735E-8 4.080728802466157E-11
i -4.218211275673232E-16 1.865435540052902E-15 -5.326800235987789E-12 -4.191457332139176E-11 4.080728802466157E-11 5.987864518494443E-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 16.33   n/a E2021B55  

181769 (1997 CR25)          Discovered 1997-Feb-13 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1997 CR25 = 2006 SM99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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