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18462 Ricco (1995 QS2)
Classification: Main-belt Asteroid          SPK-ID: 2018462
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08606110343994432 5.4e-08  
a 2.902305535343007 1.2252e-08 au
q 2.65252991845153 1.5601e-07 au
i 2.310148085245802 5.5857e-06 deg
node 162.4915754791336 8.1922e-05 deg
peri 202.4723713383809 8.4811e-05 deg
M 333.1855625324013 1.9906e-05 deg
tp 2459135.017662418806
(2020-Oct-12.51766242)
9.9744e-05 TDB
period 1805.98077171249
4.94
1.1435e-05
3.131e-08
d
yr
n .1993376704994684 1.2622e-09 deg/d
Q 3.152081152234485 1.3306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1349  
   data-arc span      12412 days (33.98 yr)  
   first obs. used      1986-10-31  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51594  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:50  

Additional Information
 Earth MOID = 1.65051 au 
 Jupiter MOID = 2.28052 au 
 T_jup = 3.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO435870  
diameter diameter 3.906 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18462 Riccò           Discovered 1995 Aug. 26 at Osservatorio San Vittore.
Italian astronomer Annibale Riccò (1844-1919) was an assistant at the observatory of Modena and later astronomer and successively director of the observatories of Palermo and Catania. He was interested in solar spectroscopy, meteorology and seismology.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1995 QS2 = 1999 JV13 = 2000 QK46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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