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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371538714081722 3.2007e-08  
a 3.161191187541346 1.8042e-08 au
q 2.727621577908653 1.0342e-07 au
i 1.499796263866398 4.1102e-06 deg
node 163.3843665483325 0.00014095 deg
peri 92.93648734986702 0.00014179 deg
M 7.3004419979359 1.5707e-05 deg
tp 2458958.868579962183
(2020-Apr-19.36857996)
8.9523e-05 TDB
period 2052.932030396471
5.62
1.7575e-05
4.812e-08
d
yr
n .1753589474321151 1.5012e-09 deg/d
Q 3.594760797174039 2.0516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      12898 days (35.31 yr)  
   first obs. used      1985-02-21  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:58:28  

Additional Information
 Earth MOID = 1.71324 au 
 Jupiter MOID = 1.45708 au 
 T_jup = 3.190 
[ 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 13.2   n/a MPO473895  
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

[ show close-approach data ]
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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