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61404 Ocenasek (2000 QM9)
Classification: Main-belt Asteroid          SPK-ID: 2061404
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2384551892608751 4.0339e-08  
a 2.721205345731355 1.3419e-08 au
q 2.07231980999728 1.0813e-07 au
i 6.611407072317949 4.9049e-06 deg
node 202.4239771499049 3.6028e-05 deg
peri 137.3911996327523 3.7195e-05 deg
M 208.326943824542 1.1019e-05 deg
tp 2459891.290469296163
(2022-Nov-07.79046930)
5.2801e-05 TDB
period 1639.609402074263
4.49
1.2128e-05
3.32e-08
d
yr
n .2195644886791729 1.6241e-09 deg/d
Q 3.370090881465431 1.6618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1106  
   data-arc span      7990 days (21.88 yr)  
   first obs. used      1999-05-08  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53481  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:50:03  

Additional Information
 Earth MOID = 1.06812 au 
 Jupiter MOID = 2.08445 au 
 T_jup = 3.307 
[ 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 14.73   n/a E2021B10  
diameter diameter 6.475 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

61404 Očenášek           Discovered 2000 Aug. 26 by P. Pravec and P. Kušnirák at Ondřejov.
Czech handyman Ludvík Očenášek (1872-1949) constructed a radial engine for airplanes and his own monoplane in 1905. He began systematic rocket research in 1928, and in 1930 his two-stage rockets reached an altitude of 1.5 km. He considered the launching of rockets from aircraft and the long-distance rocket delivery of mail.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

Alternate Designations
 2000 QM9 = 1999 JQ109 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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