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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3113969048810695 3.6907e-08  
a 2.310344221111656 9.2855e-09 au
q 1.590910181447621 8.6038e-08 au
i 21.4864526435056 5.3125e-06 deg
node 340.4152991612217 1.0865e-05 deg
peri 244.2386613062624 1.4645e-05 deg
M 22.04436284517489 1.265e-05 deg
tp 2458921.956814139408
(2020-Mar-13.45681414)
4.4909e-05 TDB
period 1282.665646015807
3.51
7.7327e-06
2.117e-08
d
yr
n .2806655039980416 1.692e-09 deg/d
Q 3.029778260775691 1.2177e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1822  
   data-arc span      16919 days (46.32 yr)  
   first obs. used      1974-02-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:40:27  

Additional Information
 Earth MOID = .692828 au 
 Jupiter MOID = 2.26654 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456862.5 (2014-Jul-24.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3114131377897076 3.6843e-08  
q 1.590533819760312 8.5918e-08 au
tp 2456356.956009763838
(2013-Mar-05.45600976)
4.198e-05 TDB
node 340.4446439055426 1.0863e-05 deg
peri 244.1872973239352 1.4655e-05 deg
i 21.49033370395909 5.3133e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1822  
   data-arc span      16919 days (46.32 yr)  
   first obs. used      1974-02-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:40:27  

Additional Information
 Jupiter MOID = 2.26654 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.357379539186749E-15 -3.156608969341708E-15 -5.440608462478143E-13 -5.103115228482337E-15 -8.537758960445944E-14 2.466632333271363E-15
q -3.156608969341708E-15 7.381930145498475E-15 1.258379100824381E-12 1.106283019862264E-14 2.013497130191418E-13 -4.516955575772533E-15
tp -5.440608462478143E-13 1.258379100824381E-12 1.762337395371627E-9 9.003375226588682E-12 4.216374262198934E-10 1.825032601598383E-12
node -5.103115228482337E-15 1.106283019862264E-14 9.003375226588682E-12 1.180091526370076E-10 -1.073698224036155E-10 -1.064301604478136E-11
peri -8.537758960445944E-14 2.013497130191418E-13 4.216374262198934E-10 -1.073698224036155E-10 2.14766576039543E-10 1.071527182215428E-11
i 2.466632333271363E-15 -4.516955575772533E-15 1.825032601598383E-12 -1.064301604478136E-11 1.071527182215428E-11 2.823091587831819E-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-August); 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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