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JPL Small-Body Database Browser
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2055 Dvorak (1974 DB)
Classification: Mars-crossing Asteroid          SPK-ID: 2002055
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3113328615611902 4.045e-08  
a 2.310329439315668 1.0307e-08 au
q 1.591047963824461 9.5398e-08 au
i 21.48475375764441 5.4467e-06 deg
node 340.4214047361602 1.1025e-05 deg
peri 244.1983187085973 1.6115e-05 deg
M 269.7959908544105 1.5889e-05 deg
tp 2458921.890203504363
(2020-Mar-13.39020350)
5.7682e-05 TDB
period 1282.65333611536
3.51
8.5834e-06
2.35e-08
d
yr
n .2806681976053599 1.8782e-09 deg/d
Q 3.029610914806875 1.3516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      16717 days (45.77 yr)  
   first obs. used      1974-02-19  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:30:30  

Additional Information
 Earth MOID = .693118 au 
 Jupiter MOID = 2.26737 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456788.5 (2014-May-11.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3113859528068634 4.0377e-08  
q 1.590656536718547 9.5204e-08 au
tp 2456356.960760046517
(2013-Mar-05.46076005)
5.1163e-05 TDB
node 340.4438990261352 1.1022e-05 deg
peri 244.194714902476 1.613e-05 deg
i 21.48997858116712 5.4479e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      16717 days (45.77 yr)  
   first obs. used      1974-02-19  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:30:30  

Additional Information
 Jupiter MOID = 2.26737 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.630286406665281E-15 -3.83404421321886E-15 -1.001136724321379E-12 -6.30254069152853E-15 -1.852469691674205E-13 -3.340622143273706E-16
q -3.83404421321886E-15 9.063882300239534E-15 2.398338122316529E-12 1.409674029479412E-14 4.505923573792078E-13 2.553361084168955E-15
tp -1.001136724321379E-12 2.398338122316529E-12 2.617649363864356E-9 1.208089947982126E-11 6.116874266484454E-10 7.983557700643443E-12
node -6.30254069152853E-15 1.409674029479412E-14 1.208089947982126E-11 1.214827371782569E-10 -1.099202146683916E-10 -1.227342741593529E-11
peri -1.852469691674205E-13 4.505923573792078E-13 6.116874266484454E-10 -1.099202146683916E-10 2.601912634556174E-10 1.367180214359055E-11
i -3.340622143273706E-16 2.553361084168955E-15 7.983557700643443E-12 -1.227342741593529E-11 1.367180214359055E-11 2.967942862256173E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO365269  
rotation period rot_per 4.405 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Mazzone, F.; Colazo, C.; Mina, F.; Meilia, R.; Spagnotto, J.; Bernal, A. (2014) Minor Planet Bull. 41, 17-19.]
[Oey, J. (2014) Minor Planet Bull. 41, 276-281.]

2055 Dvorak (1974 DB)          Discovered 1974-Feb-19 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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