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8353 Megryan (1989 GC4)
Classification: Main-belt Asteroid          SPK-ID: 2008353
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06698631096894735 3.7395e-08  
a 2.94695976534712 1.5099e-08 au
q 2.749553802092602 1.1158e-07 au
i 1.08912653990226 3.5687e-06 deg
node 272.9792068959184 0.00030006 deg
peri 329.3332491940092 0.00030346 deg
M 54.40204294042498 4.5677e-05 deg
tp 2458921.263333528738
(2020-Mar-12.76333353)
0.00023452 TDB
period 1847.820311449303
5.06
1.4201e-05
3.888e-08
d
yr
n .1948241383479765 1.4973e-09 deg/d
Q 3.144365728601639 1.6111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      25127 days (68.79 yr)  
   first obs. used      1951-11-28  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52475  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:32:18  

Additional Information
 Earth MOID = 1.73517 au 
 Jupiter MOID = 1.85596 au 
 T_jup = 3.267 
[ 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 13.49   n/a MPCxxxxx  
diameter diameter 6.507 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.200   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8353 Megryan           Discovered 1989 Apr. 3 by E. W. Elst at the European Southern Observatory.
Margaret Mary Emily Anne Hyra (Meg Ryan, b. 1961) majored in journalism and later became an actress. She showed her talent in You've got Mail (1999).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1989 GC4 = 1976 US19 = 1981 UX29 = 1991 TH12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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