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JPL Small-Body Database Browser
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9446 Cicero (1997 JT11)
Classification: Main-belt Asteroid          SPK-ID: 2009446
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363262400435616 3.2719e-08  
a 3.158291030948636 1.9245e-08 au
q 2.727733089736105 1.0555e-07 au
i 1.499898334092212 4.1804e-06 deg
node 163.4126496099331 0.00014362 deg
peri 92.98202937298466 0.00014448 deg
M 297.0072514502478 1.6181e-05 deg
tp 2458959.227528019869
(2020-Apr-19.72752802)
9.2759e-05 TDB
period 2050.107560954506
5.61
1.8739e-05
5.13e-08
d
yr
n .1756005425551371 1.6051e-09 deg/d
Q 3.588848972161167 2.1869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1822  
   data-arc span      12497 days (34.21 yr)  
   first obs. used      1985-02-21  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51555  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:42:32  

Additional Information
 Earth MOID = 1.71304 au 
 Jupiter MOID = 1.46279 au 
 T_jup = 3.191 
[ show covariance matrix ]

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 13.1   n/a MPO431609  
diameter diameter 13.247 km 0.256 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9446 Cicero (1997 JT11)          Discovered 1997-May-03 by Elst, E. W. at La Silla
Reference: 19981005/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 JT11 = 1985 DB1 = 1996 CF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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