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20339 Eileenreed (1998 HM88)
Classification: Main-belt Asteroid          SPK-ID: 2020339
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06068485395834711 4.1243e-08  
a 2.853500937673254 1.3333e-08 au
q 2.680336650000546 1.1531e-07 au
i 1.144542242990582 3.596e-06 deg
node 281.5926015110055 0.00019454 deg
peri 48.79324897393101 0.00019705 deg
M 144.242936646066 3.2891e-05 deg
tp 2458495.064175126892
(2019-Jan-11.56417513)
0.00015994 TDB
period 1760.619291726305
4.82
1.2339e-05
3.378e-08
d
yr
n .2044735063916154 1.4331e-09 deg/d
Q 3.026665225345961 1.4142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      10634 days (29.11 yr)  
   first obs. used      1992-02-01  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52438  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:02:06  

Additional Information
 Earth MOID = 1.66742 au 
 Jupiter MOID = 2.18705 au 
 T_jup = 3.302 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.48   n/a MPCxxxxx  

20339 Eileenreed           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Eileen Reed mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the New Milford High School, New Milford, Connecticut.
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

Alternate Designations
 1998 HM88 = 1999 RW213 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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