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16745 Zappa (1996 PF5)
Classification: Main-belt Asteroid          SPK-ID: 2016745
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419862732084824 4.7478e-08  
a 2.624494300340888 1.7061e-08 au
q 2.251852135578581 1.3016e-07 au
i 10.56163834608517 5.8013e-06 deg
node 292.1578431584934 2.3616e-05 deg
peri 273.3192632012348 3.3294e-05 deg
M 359.3485149232244 2.5706e-05 deg
tp 2459203.310404609025
(2020-Dec-19.81040461)
0.0001109 TDB
period 1552.983629734958
4.25
1.5143e-05
4.146e-08
d
yr
n .2318118447014409 2.2604e-09 deg/d
Q 2.997136465103194 1.9483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      16769 days (45.91 yr)  
   first obs. used      1974-06-20  
   last obs. used      2020-05-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:40:57  

Additional Information
 Earth MOID = 1.27673 au 
 Jupiter MOID = 2.11529 au 
 T_jup = 3.365 
[ 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 14.83   n/a E2021B10  
diameter diameter 6.180 km 1.945 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.048   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

16745 Zappa           Discovered 1996 Aug. 9 at Osservatorio San Vittore.
Italian astronomer Giovanni Zappa (1884-1923) was an assistant at the observatory of the Collegio Romano, adjunct astronomer at Catania, astronomer at Capodimonte and director of the observatory of Collurania and Collegio Romano. Interested in classical astronomy, he calculated orbits of minor planets and comets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

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