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JPL Small-Body Database Browser
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44530 Horakova (1998 YC8)
Classification: Main-belt Asteroid          SPK-ID: 2044530
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2258841437826873 3.5096e-08  
a 2.581160831152667 1.1751e-08 au
q 1.998117526842337 9.2743e-08 au
i 11.67809629380064 5.0478e-06 deg
node 280.5082006246756 1.9279e-05 deg
peri 89.02183196192874 2.319e-05 deg
M 104.3276056171042 1.4048e-05 deg
tp 2458561.547258839708
5.7419e-05 TDB
period 1514.680471031513
n .2376738902263896 1.6231e-09 deg/d
Q 3.164204135462997 1.4406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1831  
   data-arc span      12586 days (34.46 yr)  
   first obs. used      1985-07-21  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46341  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 06:52:59  

Additional Information
 Earth MOID = 1.03807 au 
 Jupiter MOID = 2.48141 au 
 T_jup = 3.360 
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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 13.1   n/a MPO417124  
diameter diameter 7.051 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 160. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2010) Observatoire de Geneve web site,]
geometric albedo albedo 0.249   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

44530 Horáková           Discovered 1998 Dec. 25 by J. Tichá and M. Tichý at Kleť.
Czech lawyer Milada Horáková (1901-1950) was a human and women's rights activist in the interwar and postwar periods and founder of the Czech women's journal Vlasta. She joined the Czech anti-Nazi resistance, survived Nazi imprisonment (1940-1945) and later was unjustly executed in communist Czechoslovakia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

Alternate Designations
 1998 YC8 = 1985 ON 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Feb-18 01:09 UT
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