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3821 Sonet (1985 RC3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003821
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927705012470459 3.3626e-08  
a 3.2305061789245 1.7309e-08 au
q 2.607759883531545 1.1195e-07 au
i .5503006424987915 4.2097e-06 deg
node 113.9373381856445 0.00042727 deg
peri 341.4857142901806 0.00042737 deg
M 235.6970262937271 1.048e-05 deg
tp 2459732.790345730390
(2022-Jun-02.29034573)
6.2606e-05 TDB
period 2120.82234722625
5.81
1.7045e-05
4.667e-08
d
yr
n .1697454765463177 1.3643e-09 deg/d
Q 3.853252474317455 2.0646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1975  
   data-arc span      25104 days (68.73 yr)  
   first obs. used      1951-11-08  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:08:15  

Additional Information
 Earth MOID = 1.62456 au 
 Jupiter MOID = 1.33891 au 
 T_jup = 3.157 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456521.5 (2013-Aug-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1858268865207179 3.1888e-08  
q 2.637361147703814 1.043e-07 au
tp 2455459.168164582603
(2010-Sep-19.66816458)
6.9591e-05 TDB
node 113.2783013707476 0.00043088 deg
peri 339.8353098394333 0.00043102 deg
i .5534051415197896 4.1376e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1975  
   data-arc span      25104 days (68.73 yr)  
   first obs. used      1951-11-08  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:08:15  

Additional Information
 Jupiter MOID = 1.33891 au 
 T_jup = 3.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.016847944099321E-15 -3.299146633769158E-15 5.639385641360005E-13 1.322199388547049E-14 7.832847958807578E-14 3.628042291698534E-17
q -3.299146633769158E-15 1.087942888163032E-14 -2.016297842085841E-12 -2.248208723291785E-14 -2.913950769262833E-13 -5.181189695659054E-17
tp 5.639385641360005E-13 -2.016297842085841E-12 4.842934695574206E-9 4.129537824536144E-11 7.986691255122928E-10 2.983679033400167E-13
node 1.322199388547049E-14 -2.248208723291785E-14 4.129537824536144E-11 1.856610216170557E-7 -1.856412027316246E-7 5.219738266544527E-10
peri 7.832847958807578E-14 -2.913950769262833E-13 7.986691255122928E-10 -1.856412027316246E-7 1.85776475084201E-7 -5.218843470127409E-10
i 3.628042291698534E-17 -5.181189695659054E-17 2.983679033400167E-13 5.219738266544527E-10 -5.218843470127409E-10 1.712006259837549E-11

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 12.6   n/a MPO435734  
diameter diameter 15.115 km 5.374 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.559 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.077   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3821 Sonet           Discovered 1985 Sept. 6 by H. Debehogne at the European Southern Observatory.
Jean Sonet (1908-1987), a Belgian Jesuit, was a specialist in Romance languages, professor and later rector (1953-1958) of the University of Namur. From 1958 to his death he was Vice-Rector of the Catholic University of Cordoba (Argentina), where the discoverer met him. The name was suggested by A. Sonet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1985 RC3 = 1951 YV = 1979 QQ5 = 1982 DH5 = 1986 WH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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