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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097346738913065 3.3565e-08  
a 2.603154115960826 1.0491e-08 au
q 2.317497847957053 8.9912e-08 au
i 2.761178364296831 4.2896e-06 deg
node 193.1844342454764 7.9124e-05 deg
peri 97.9202266039472 8.1574e-05 deg
M 42.68042382361015 2.0296e-05 deg
tp 2458818.624386847083
8.6257e-05 TDB
period 1534.080847126693
n .2346682058343104 1.4186e-09 deg/d
Q 2.8888103839646 1.1642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1238  
   data-arc span      14886 days (40.76 yr)  
   first obs. used      1978-10-27  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:07:49  

Additional Information
 Earth MOID = 1.30331 au 
 Jupiter MOID = 2.25794 au 
 T_jup = 3.403 
[ 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 14.7   n/a MPO435810  
diameter diameter 4.470 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
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] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1984-Dec-18 22:39 < 00:01 Juno 0.0276278537152823 0.0276259620701494 0.0276297456272444 7.04915020922807 7.04915014675943 2446053.443678851 0.2504095312259 175.980034158835 38.8944757494767 59.9613965936397 92707.4049034826 T 18 CATAB v2.0f-lin.ifort 2020-Feb-22 20:08:02 2020-Feb-22 20:08

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