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20283 Elizaheller (1998 FG55)
Classification: Main-belt Asteroid          SPK-ID: 2020283
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185052419589041 2.9246e-08  
a 2.567534276566414 1.2904e-08 au
q 2.092405846310001 7.6939e-08 au
i 3.69786138436851 5.1376e-06 deg
node 40.83702695796364 5.1847e-05 deg
peri 279.7582522822697 5.4524e-05 deg
M 19.04225100684021 1.6952e-05 deg
tp 2458921.014376210634
(2020-Mar-12.51437621)
7.0753e-05 TDB
period 1502.701784252982
4.11
1.1328e-05
3.101e-08
d
yr
n .239568491747657 1.806e-09 deg/d
Q 3.042662706822826 1.5291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      13466 days (36.87 yr)  
   first obs. used      1983-11-09  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4799  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:52:57  

Additional Information
 Earth MOID = 1.0836 au 
 Jupiter MOID = 2.27976 au 
 T_jup = 3.404 
[ 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 14.1   n/a MPO435888  
diameter diameter 4.139 km 0.841 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20283 Elizaheller           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Elizabeth Rose Heller (b. 1986) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for her earth and space sciences project. She attends the Nanuet High School, Nanuet, 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

Alternate Designations
 1998 FG55 = 1983 VA6 = 1991 RU5 = 1999 RG52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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