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2073 Janacek (1974 DK)
Classification: Main-belt Asteroid          SPK-ID: 2002073
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1133501237806988 5.4753e-08  
a 2.715067500659113 1.9626e-08 AU
q 2.40731426338645 1.4692e-07 AU
i 2.964079393216422 5.6236e-06 deg
node 85.03679975118122 0.00012719 deg
peri .1401418685780565 0.00013125 deg
M 98.46713113259207 3.0862e-05 deg
tp 2456553.550806628653
(2013-Sep-18.05080663)
0.00014036 JED
period 1634.065172438312
4.47
1.7718e-05
4.851e-08
d
yr
n .2203094503647103 2.3887e-09 deg/d
Q 3.022820737931776 2.185e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1264  
   data-arc span      15456 days (42.32 yr)  
   first obs. used      1972-10-06  
   last obs. used      2015-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48436  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:00:59  

Additional Information
 Earth MOID = 1.42318 AU 
 T_jup = 3.350 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO296147  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2073 Janacek (1974 DK)          Discovered 1974-Feb-19 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1974 DK = 1972 TQ1 = 1972 TU6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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