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216145 (2006 SY261)
Classification: Main-belt Asteroid          SPK-ID: 2216145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07950336732382948 5.8884e-08  
a 2.861741694744317 2.4229e-08 au
q 2.634223593601141 1.7617e-07 au
i 2.841452017592749 4.3082e-06 deg
node 51.81209201234259 0.00011523 deg
peri 298.9732466629164 0.00011918 deg
M 48.31458147631013 2.8445e-05 deg
tp 2459159.187948023184
(2020-Nov-05.68794802)
0.00013977 TDB
period 1768.25165614947
4.84
2.2456e-05
6.148e-08
d
yr
n .2035909304809774 2.5856e-09 deg/d
Q 3.089259795887492 2.6155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      6935 days (18.99 yr)  
   first obs. used      2001-10-25  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:53:37  

Additional Information
 Earth MOID = 1.62893 au 
 Jupiter MOID = 2.25679 au 
 T_jup = 3.295 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457925.5 (2017-Jun-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08230661926715541 5.871e-08  
q 2.625948860922385 1.7649e-07 au
tp 2457393.321884770309
(2016-Jan-05.82188477)
0.00013714 TDB
node 51.89298852405098 0.00011491 deg
peri 299.5936121365348 0.0001186 deg
i 2.846394126152122 4.3149e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      6935 days (18.99 yr)  
   first obs. used      2001-10-25  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:53:37  

Additional Information
 Jupiter MOID = 2.25679 au 
 T_jup = 3.295 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.446825290588688E-15 -1.02853677555335E-14 4.271684818571204E-13 5.539706440283753E-15 1.722707646673468E-13 -3.574969418232635E-15
q -1.02853677555335E-14 3.114805357553701E-14 -1.813789515176605E-12 -1.691209088940814E-14 -5.999403636962812E-13 1.084339080567208E-14
tp 4.271684818571204E-13 -1.813789515176605E-12 1.880604035929272E-8 -1.127091364997859E-11 4.06342091117003E-9 2.069583536410785E-12
node 5.539706440283753E-15 -1.691209088940814E-14 -1.127091364997859E-11 1.32044373099746E-8 -1.319024967656386E-8 -9.280548035175641E-11
peri 1.722707646673468E-13 -5.999403636962812E-13 4.06342091117003E-9 -1.319024967656386E-8 1.406523838687757E-8 9.305968393287299E-11
i -3.574969418232635E-15 1.084339080567208E-14 2.069583536410785E-12 -9.280548035175641E-11 9.305968393287299E-11 1.86187028108496E-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 16.78   n/a E2021B55  

216145 (2006 SY261)          Discovered 2006-Sep-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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