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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .311775378142069 1.8209e-08  
a 2.309348464208217 8.5086e-09 au
q 1.589350473517894 4.2838e-08 au
i 21.49505744534194 4.1419e-07 deg
node 340.4087203072573 1.387e-06 deg
peri 244.1438023005346 3.0208e-06 deg
M 133.2921432466186 5.1008e-06 deg
tp 2458921.892407010052
(2020-Mar-13.39240701)
1.6901e-05 TDB
period 1281.83649324519
3.51
7.0842e-06
1.94e-08
d
yr
n .2808470517862991 1.5521e-09 deg/d
Q 3.02934645489854 1.1161e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2085  
   data-arc span      17338 days (47.47 yr)  
   first obs. used      1974-02-19  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:19:20  

Additional Information
 Earth MOID = .691799 au 
 Jupiter MOID = 2.26445 au 
 T_jup = 3.431 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.87   n/a MPO636093  
rotation period rot_per 4.407 h n/a LCDB (Rev. 2020-October); 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

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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