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55874 Brlka (1997 UL9)
Classification: Main-belt Asteroid          SPK-ID: 2055874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .217321552830928 3.0796e-08  
a 2.605896692643873 1.0639e-08 au
q 2.039579176881527 8.072e-08 au
i 14.29415255689198 7.3539e-06 deg
node 36.75252011839515 1.338e-05 deg
peri 74.0267862980154 2.2641e-05 deg
M 81.80471065625396 1.7085e-05 deg
tp 2458651.351620249834
7.2117e-05 TDB
period 1536.505852801404
n .2342978383997933 1.4349e-09 deg/d
Q 3.172214208406219 1.2951e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1110  
   data-arc span      8251 days (22.59 yr)  
   first obs. used      1997-10-28  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:20:25  

Additional Information
 Earth MOID = 1.10769 au 
 Jupiter MOID = 2.17001 au 
 T_jup = 3.336 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO381663  
diameter diameter 3.994 km 1.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.160   0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

55874 Brlka           Discovered 1997 Oct. 28 by P. Pravec at Ondřejov.
Petr Brlka (1945-1966), a Czech amateur astronomer, was a member since 1959 and from 1963 the chairman of the Meteor Observers Group in Brno. A student of mathematics and physics in Brno University, he died in an avalanche in the Vysoke Tatry Mountains in Slovakia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2126-Mar-09 17:33 00:03 Eunom 0.0380097793194324 0.0379811556171951 0.0380384227424708 7.47414447604324 7.47414442663071 2497633.231514570 3.03167249392747 1976.38907228798 78.3235869162335 43.8027094652376 50277.5521410337 T 21 CATAB v2.0f-lin.ifort 2020-Jun-23 22:20:50 2020-Jun-23 22:20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Aug-07 10:45 UT
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