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20298 Gordonsu (1998 FW77)
Classification: Main-belt Asteroid          SPK-ID: 2020298
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09670295049392322 4.1536e-08  
a 2.593192915562115 1.2247e-08 au
q 2.34242350942732 1.0366e-07 au
i 7.881555529603602 4.3993e-06 deg
node 50.58526308941067 2.5905e-05 deg
peri 192.6507192425506 3.4726e-05 deg
M 117.7652510910489 2.1444e-05 deg
tp 2458701.540462832938
(2019-Aug-06.04046283)
9.1617e-05 TDB
period 1525.283831316821
4.18
1.0805e-05
2.958e-08
d
yr
n .2360216456823002 1.672e-09 deg/d
Q 2.843962321696911 1.3432e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      9752 days (26.70 yr)  
   first obs. used      1994-04-15  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:37  

Additional Information
 Earth MOID = 1.32896 au 
 Jupiter MOID = 2.1588 au 
 T_jup = 3.399 
[ 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 14.98   n/a E2021B10  
diameter diameter 4.862 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20298 Gordonsu           Discovered 1998 Mar. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Gordon L. Su (b. 1986) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for his behavioral and social sciences project. He attends the Montgomery Blair High School, Silver Spring, Maryland.
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 ]
Alternate Designations
 1998 FW77 = 1994 GS11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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