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JPL Small-Body Database Browser
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9823 Annantalova (4271 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2009823
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1323466073121568 3.5592e-08  
a 2.382157250533172 9.3312e-09 au
q 2.066886820341051 8.7527e-08 au
i 6.818164637106881 4.3981e-06 deg
node 38.634635423849 3.3635e-05 deg
peri 259.2190239158257 3.874e-05 deg
M 37.7694741332796 1.8096e-05 deg
tp 2458859.605998289408
6.7557e-05 TDB
period 1342.932137122895
n .2680701355254376 1.5751e-09 deg/d
Q 2.697427680725293 1.0566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1353  
   data-arc span      23621 days (64.67 yr)  
   first obs. used      1954-11-23  
   last obs. used      2019-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51848  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:28:38  

Additional Information
 Earth MOID = 1.06445 au 
 Jupiter MOID = 2.50103 au 
 T_jup = 3.516 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO473900  
diameter diameter 2.667 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.394   0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

9823 Annatalová           Discovered 1971 Mar. 26 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Anna Antalová (b. 1936) has worked at the Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica, since 1958. She made various analyses of solar phenomena and significant contributions to the study of solar flares as well as solar cycle characteristics. The name was suggested by D. Chochol.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 4271 T-1 = 1997 GM23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Apr-03 23:14 UT
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