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JPL Small-Body Database Browser
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20340 Susanruder (1998 HR91)
Classification: Main-belt Asteroid          SPK-ID: 2020340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475925408993908 4.7578e-08  
a 2.378481970528511 1.0426e-08 au
q 2.027435773014818 1.1469e-07 au
i 2.987203621526611 4.6191e-06 deg
node 137.8752038833378 7.6524e-05 deg
peri 6.335588267950952 7.7814e-05 deg
M 318.6042862732901 1.3295e-05 deg
tp 2458754.563974179862
(2019-Sep-28.06397418)
4.9681e-05 TDB
period 1339.825448376406
3.67
8.8096e-06
2.412e-08
d
yr
n .2686917168473297 1.7667e-09 deg/d
Q 2.729528168042204 1.1965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      9160 days (25.08 yr)  
   first obs. used      1993-12-09  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57851  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:39:54  

Additional Information
 Earth MOID = 1.04026 au 
 Jupiter MOID = 2.2802 au 
 T_jup = 3.523 
[ 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 15.5   n/a MPO358825  

20340 Susanruder           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Susan Ruder mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Carmel High School, Carmel, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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