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21804 Vaclavneumann (1999 TC8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2021804
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2670848823943264 4.2093e-08  
a 3.934106302334254 3.9981e-08 au
q 2.883365983248531 1.7162e-07 au
i 3.836240592118011 4.7323e-06 deg
node 97.96309983427746 7.6731e-05 deg
peri 261.2718974247986 7.7331e-05 deg
M 268.4547085282549 1.141e-05 deg
tp 2459925.271444165530
(2022-Dec-11.77144417)
9.8559e-05 TDB
period 2850.148988603322
7.80
4.3448e-05
1.19e-07
d
yr
n .1263091864458683 1.9255e-09 deg/d
Q 4.984846621419976 5.0659e-08 au
  Orbit Determination Parameters
   # obs. used (total)      588  
   data-arc span      10490 days (28.72 yr)  
   first obs. used      1991-10-03  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56485  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:53:38  

Additional Information
 Earth MOID = 1.8817 au 
 Jupiter MOID = .521777 au 
 T_jup = 2.995 
[ show covariance matrix ]

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 14.38   n/a E2021B10  
diameter diameter 9.586 km 1.069 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.040   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

21804 Václavneumann           Discovered 1999 Oct. 4 by L. Šarounová at Ondřejov.
Václav Neumann (1920-1995) was the head conductor of the Czech Philharmonic Orchestra during 1968-1990. He became famous especially for his interpretation of the work of Martin{u°}, Mahler, Janáček and Dvořák.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
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