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JPL Small-Body Database Browser
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21754 Tvaruzkova (1999 RZ183)
Classification: Main-belt Asteroid          SPK-ID: 2021754
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 .1077633023380823 3.3957e-08  
a 2.342418347413115 8.385e-09 au
q 2.089991610838564 8.0622e-08 au
i 7.458078272288823 4.386e-06 deg
node 149.4538168510456 2.8955e-05 deg
peri 268.1613028320189 3.5733e-05 deg
M 228.1869039207714 2.064e-05 deg
tp 2459479.958672675916
(2021-Sep-22.45867268)
7.5694e-05 TDB
period 1309.468689359838
3.59
7.0311e-06
1.925e-08
d
yr
n .2749206628040827 1.4762e-09 deg/d
Q 2.594845083987665 9.2886e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1264  
   data-arc span      9170 days (25.11 yr)  
   first obs. used      1994-03-05  
   last obs. used      2019-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:00:13  

Additional Information
 Earth MOID = 1.11757 au 
 Jupiter MOID = 2.69036 au 
 T_jup = 3.544 
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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 15.1   n/a MPO435902  
diameter diameter 1.944 km 0.517 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.355   0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21754 Tvaruzkova           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Zuzana Tvaruzkova (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for her botany project. She attends the Gymnazium Kromeriz, Kromeriz, Czech Republic.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

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