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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06066471878920662 4.183e-08  
a 2.853110824801397 1.4551e-08 au
q 2.680027658940379 1.1802e-07 au
i 1.144673500098887 3.6708e-06 deg
node 281.5920930279434 0.0002305 deg
peri 48.62703239247472 0.00023315 deg
M 103.525298332392 3.5576e-05 deg
tp 2458494.302053460211
(2019-Jan-10.80205346)
0.00017393 TDB
period 1760.258252714503
4.82
1.3466e-05
3.687e-08
d
yr
n .2045154450745181 1.5645e-09 deg/d
Q 3.026193990662415 1.5434e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      10223 days (27.99 yr)  
   first obs. used      1992-02-01  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53676  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:05:13  

Additional Information
 Earth MOID = 1.66902 au 
 Jupiter MOID = 2.18795 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 14.4   n/a MPO365495  

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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