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4921 Volonte (1980 SJ)
Classification: Main-belt Asteroid          SPK-ID: 2004921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .1429788449661296 4.325e-08  
a 2.411737881196346 8.1896e-09 au
q 2.066910384581832 1.0321e-07 au
i 5.208286946797456 4.1328e-06 deg
node 233.1338175907576 3.3467e-05 deg
peri 145.6202024282875 3.5231e-05 deg
M 199.3139643834452 1.3418e-05 deg
tp 2459611.117461742355
(2022-Jan-31.61746174)
5.2748e-05 TDB
period 1368.023583280191
3.75
6.9682e-06
1.908e-08
d
yr
n .2631533581729686 1.3404e-09 deg/d
Q 2.75656537781086 9.3606e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2361  
   data-arc span      31003 days (84.88 yr)  
   first obs. used      1935-08-31  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46562  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:47:35  

Additional Information
 Earth MOID = 1.07185 au 
 Jupiter MOID = 2.70917 au 
 T_jup = 3.500 
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Orbital Elements at Epoch 2456979.5 (2014-Nov-18.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414585088727933 4.3025e-08  
q 2.071077741172294 1.0249e-07 au
tp 2456872.675232075655
(2014-Aug-03.17523208)
4.6676e-05 TDB
node 233.2684908009221 3.3525e-05 deg
peri 145.1946221032523 3.5342e-05 deg
i 5.202487237436151 4.1283e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2361  
   data-arc span      31003 days (84.88 yr)  
   first obs. used      1935-08-31  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46562  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:47:35  

Additional Information
 Jupiter MOID = 2.70917 au 
 T_jup = 3.500 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.851165024385576E-15 -4.399407529821728E-15 8.076539118003365E-13 1.22799191012638E-14 1.515481818806207E-13 6.16952412846701E-16
q -4.399407529821728E-15 1.050356744367723E-14 -1.822058148258358E-12 -2.931193584665973E-14 -3.365377285181228E-13 -1.423409128056E-15
tp 8.076539118003365E-13 -1.822058148258358E-12 2.178662719855923E-9 2.922981524215434E-12 5.284911393986558E-10 1.089657450564493E-13
node 1.22799191012638E-14 -2.931193584665973E-14 2.922981524215434E-12 1.123941327392142E-9 -1.118359794724942E-9 -3.663137026614087E-11
peri 1.515481818806207E-13 -3.365377285181228E-13 5.284911393986558E-10 -1.118359794724942E-9 1.249042084873582E-9 3.646993179736086E-11
i 6.16952412846701E-16 -1.423409128056E-15 1.089657450564493E-13 -3.663137026614087E-11 3.646993179736086E-11 1.704300089119176E-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 13.5   n/a MPO431554  
diameter diameter 5.084 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.280   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4921 Volonte (1980 SJ)          Discovered 1980-Sep-29 by Vavrova, Z. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1980 SJ = 1935 QM = 1954 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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