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21687 Filopanti (1999 RB37)
Classification: Main-belt Asteroid          SPK-ID: 2021687
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07697419659559815 4.2277e-08  
a 2.776924263755576 1.31e-08 au
q 2.563172749546168 1.1687e-07 au
i 5.725494453299742 4.3321e-06 deg
node 346.3775130706566 3.7033e-05 deg
peri 19.33110026130306 4.4775e-05 deg
M 199.4910634197055 2.5682e-05 deg
tp 2459954.100531950569
(2023-Jan-09.60053195)
0.00012163 TDB
period 1690.22483907922
4.63
1.196e-05
3.274e-08
d
yr
n .2129894151810693 1.5071e-09 deg/d
Q 2.990675777964984 1.4108e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1720  
   data-arc span      11129 days (30.47 yr)  
   first obs. used      1990-09-16  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:41  

Additional Information
 Earth MOID = 1.55998 au 
 Jupiter MOID = 2.40046 au 
 T_jup = 3.323 
[ 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 13.96   n/a E2021B10  
diameter diameter 3.964 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.372   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21687 Filopanti           Discovered 1999 Sept. 11 at Osservatorio San Vittore.
Quirico Filopanti was the pseudonym of Italian patriot Giuseppe Barilli (1812-1894), professor of mathematics at Bologna University. He was author of the books L´Universo and Lezioni di Astronomia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1999 RB37 = 1990 TJ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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