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3291 Dunlap (1982 VX3)
Classification: Main-belt Asteroid          SPK-ID: 2003291
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103566204506758 3.406e-08  
a 3.150536699631644 1.5262e-08 au
q 2.824247571491547 1.1137e-07 au
i 2.005500226811197 3.9664e-06 deg
node 151.2480473296179 9.0108e-05 deg
peri 162.1371481133674 9.2057e-05 deg
M 347.4418176300326 1.7424e-05 deg
tp 2459071.752404726813
(2020-Aug-10.25240473)
9.8718e-05 TDB
period 2042.561968441883
5.59
1.4842e-05
4.064e-08
d
yr
n .1762492426482497 1.2807e-09 deg/d
Q 3.476825827771742 1.6843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2627  
   data-arc span      24500 days (67.08 yr)  
   first obs. used      1953-10-01  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:31  

Additional Information
 Earth MOID = 1.81032 au 
 Jupiter MOID = 1.77041 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456945.5 (2014-Oct-15.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1035959179712639 3.4209e-08  
q 2.82152968348325 1.1194e-07 au
tp 2457042.613016406982
(2015-Jan-20.11301641)
0.00010353 TDB
node 151.3667398347938 9.029e-05 deg
peri 163.8836843664097 9.2221e-05 deg
i 2.003863954801871 3.9645e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2627  
   data-arc span      24500 days (67.08 yr)  
   first obs. used      1953-10-01  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:31  

Additional Information
 Jupiter MOID = 1.77041 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.17028489608303E-15 -3.80245107346336E-15 1.201261158847212E-12 2.075161725424082E-15 2.11484955709181E-13 -1.517742001131388E-16
q -3.80245107346336E-15 1.25303743616304E-14 -4.413604160018532E-12 -7.273883156427307E-15 -7.796630465621046E-13 5.307715072670733E-16
tp 1.201261158847212E-12 -4.413604160018532E-12 1.071927645366799E-8 5.815468634236604E-12 1.955615619495234E-9 -4.155883416031298E-13
node 2.075161725424082E-15 -7.273883156427307E-15 5.815468634236604E-12 8.152224279120182E-9 -8.14588824564232E-9 5.984347899689782E-11
peri 2.11484955709181E-13 -7.796630465621046E-13 1.955615619495234E-9 -8.14588824564232E-9 8.504682978219503E-9 -5.98834179754869E-11
i -1.517742001131388E-16 5.307715072670733E-16 -4.155883416031298E-13 5.984347899689782E-11 -5.98834179754869E-11 1.571752075617827E-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 12.7   n/a MPO473811  
diameter diameter 22.496 km 2.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.051   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3291 Dunlap (1982 VX3)          Discovered 1982-Nov-14 by Kosai, H. and Hurukawa, K. at Kiso Station
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1982 VX3 = 1974 HE2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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