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2055 Dvorak (1974 DB)
Classification: Mars-crossing Asteroid          SPK-ID: 2002055
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3113900801373244 7.1007e-08  
a 2.309926335177475 1.2897e-08 AU
q 1.590638188555245 1.6234e-07 AU
i 21.49003173770574 1.0736e-05 deg
node 340.4439598091116 2.3238e-05 deg
peri 244.1937418958144 2.9657e-05 deg
M 124.519970701639 2.2674e-05 deg
tp 2456356.960674947143
(2013-Mar-05.46067495)
7.9267e-05 JED
period 1282.317656511678
3.51
1.074e-05
2.94e-08
d
yr
n .2807416697195899 2.3513e-09 deg/d
Q 3.029214481799705 1.6914e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      14404 days (39.44 yr)  
   first obs. used      1974-02-19  
   last obs. used      2013-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44399  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 18:15:02  

Additional Information
 Earth MOID = .692792 AU 
 T_jup = 3.431 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO267715  
rotation period rot_per 4.405 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Mazzone, F. (2013) Posting on CALL web site. http://www.minorplanet.info/call.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 | Physical Parameters | Discovery Circumstances ]
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