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JPL Small-Body Database Browser
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11709 Eudoxos (1998 HF20)
Classification: Main-belt Asteroid          SPK-ID: 2011709
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097346938731554 3.4804e-08  
a 2.603154106882338 1.1195e-08 au
q 2.317497787858957 9.2219e-08 au
i 2.761181764718798 4.5036e-06 deg
node 193.1843622030316 8.1732e-05 deg
peri 97.92026392265683 8.4241e-05 deg
M 42.68045845987022 2.1617e-05 deg
tp 2458818.624240201788
(2019-Dec-01.12424020)
9.1777e-05 TDB
period 1534.080839101543
4.20
9.8965e-06
2.71e-08
d
yr
n .2346682070619168 1.5139e-09 deg/d
Q 2.888810425905719 1.2424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      14806 days (40.54 yr)  
   first obs. used      1978-10-27  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50069  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:57:06  

Additional Information
 Earth MOID = 1.30331 au 
 Jupiter MOID = 2.25794 au 
 T_jup = 3.403 
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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 14.7   n/a MPO435810  
diameter diameter 4.470 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.64 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2013) Minor Planet Bull. 40, 71-80.]
geometric albedo albedo 0.117   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11709 Eudoxos           Discovered 1998 Apr. 27 by P. G. Comba at Prescott.
Eudoxos of Knidos (c. 408-355 B.C.) was the prime mover behind two major developments in Greek mathematical thought: the theory of proportions that overcame the crisis caused by the discovery of irrational numbers, and the method of exhaustion for the calculation of areas and volumes.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1998 HF20 = 1978 US7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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