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4393 Dawe (1978 VP8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004393
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1195776689783827 1.3449e-08  
a 3.222726737960695 1.5281e-08 au
q 2.837360586881048 4.1427e-08 au
i 2.21113626780382 7.5184e-07 deg
node 125.1110154354676 1.8906e-05 deg
peri 87.00269798380255 2.3629e-05 deg
M 342.0051308931648 8.2545e-06 deg
tp 2459306.128190865397
(2021-Apr-01.62819087)
4.8606e-05 TDB
period 2113.166174523548
5.79
1.503e-05
4.115e-08
d
yr
n .1703604781962633 1.2117e-09 deg/d
Q 3.608092889040342 1.7108e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2511  
   data-arc span      26047 days (71.31 yr)  
   first obs. used      1949-11-21  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:17:55  

Additional Information
 Earth MOID = 1.83163 au 
 Jupiter MOID = 1.35598 au 
 T_jup = 3.176 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456902.5 (2014-Sep-02.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208327066001932 1.3576e-08  
q 2.834788181889615 4.1863e-08 au
tp 2457186.904830429831
(2015-Jun-13.40483043)
4.6807e-05 TDB
node 125.1247956563047 1.8912e-05 deg
peri 86.11186026278808 2.3568e-05 deg
i 2.210769203968722 7.5147e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2511  
   data-arc span      26047 days (71.31 yr)  
   first obs. used      1949-11-21  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:17:55  

Additional Information
 Jupiter MOID = 1.35598 au 
 T_jup = 3.176 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.842956451139901E-16 -5.413888404256562E-16 -2.505675060674272E-13 -5.5404356038345E-14 5.659194872429751E-15 -1.954393163631875E-15
q -5.413888404256562E-16 1.752549816252151E-15 7.547003203963786E-13 1.933218914591074E-13 -4.398636355004682E-14 6.87643085842125E-15
tp -2.505675060674272E-13 7.547003203963786E-13 2.190895682501203E-9 -2.3987993147481E-10 6.941481798334659E-10 -9.867013629961431E-12
node -5.5404356038345E-14 1.933218914591074E-13 -2.3987993147481E-10 3.57680591421177E-10 -4.09228123088068E-10 1.212662291878132E-11
peri 5.659194872429751E-15 -4.398636355004682E-14 6.941481798334659E-10 -4.09228123088068E-10 5.554365328991227E-10 -1.42253891965906E-11
i -1.954393163631875E-15 6.87643085842125E-15 -9.867013629961431E-12 1.212662291878132E-11 -1.42253891965906E-11 5.647093050760975E-13

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 12.75   n/a E2021B10  
diameter diameter 14.716 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4393 Dawe (1978 VP8)          Discovered 1978-Nov-07 by Helin and Bus at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 VP8 = 1969 FA = 1978 WU12 = 1983 UL = 1986 EC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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