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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3117753780418073 1.8212e-08  
a 2.309348464297111 8.5216e-09 au
q 1.589350473810612 4.2853e-08 au
i 21.49505744383971 4.1422e-07 deg
node 340.4087203134213 1.3871e-06 deg
peri 244.1438022872207 3.0214e-06 deg
M 133.2921432151025 5.1034e-06 deg
tp 2458921.892407094867
(2020-Mar-13.39240710)
1.6907e-05 TDB
period 1281.836493319203
3.51
7.095e-06
1.943e-08
d
yr
n .2808470517700832 1.5545e-09 deg/d
Q 3.02934645478361 1.1178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2044  
   data-arc span      17290 days (47.34 yr)  
   first obs. used      1974-02-19  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3684  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:29:43  

Additional Information
 Earth MOID = .691799 au 
 Jupiter MOID = 2.26445 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3115232512506331 1.8198e-08  
q 1.590130797899201 4.2797e-08 au
tp 2457639.029184618372
(2016-Sep-07.52918462)
1.5375e-05 TDB
node 340.4464521451236 1.3874e-06 deg
peri 244.1707392915525 3.0241e-06 deg
i 21.490774644589 4.1414e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2044  
   data-arc span      17290 days (47.34 yr)  
   first obs. used      1974-02-19  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3684  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:29:43  

Additional Information
 Jupiter MOID = 2.26445 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.311779314851036E-16 -7.715411565227218E-16 -2.336513676296592E-13 -1.028685629112474E-14 -2.3628404903256E-14 -1.140236202788517E-16
q -7.715411565227218E-16 1.831549212475544E-15 5.39327651931843E-13 2.354419659778378E-14 5.144234938663716E-14 3.032782330864356E-16
tp -2.336513676296592E-13 5.39327651931843E-13 2.363931905565948E-10 3.858391360595085E-12 3.722733466948803E-11 7.32638949377616E-13
node -1.028685629112474E-14 2.354419659778378E-14 3.858391360595085E-12 1.924981138513135E-12 -1.400140322717517E-12 1.757284087711634E-13
peri -2.3628404903256E-14 5.144234938663716E-14 3.722733466948803E-11 -1.400140322717517E-12 9.145415861356358E-12 1.270162950132687E-13
i -1.140236202788517E-16 3.032782330864356E-16 7.32638949377616E-13 1.757284087711634E-13 1.270162950132687E-13 1.715119366768565E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.86   n/a E2021B10  
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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