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JPL Small-Body Database Browser
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9541 Magri (1983 CH)
Classification: Main-belt Asteroid          SPK-ID: 2009541
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09480580275920221 2.5302e-08  
a 2.20529648373513 6.2357e-09 au
q 1.996221580272575 5.5646e-08 au
i 5.970382899871542 2.9953e-06 deg
node 97.91328160758306 3.9263e-05 deg
peri 343.2267576022381 4.5543e-05 deg
M 69.13996072710486 2.3468e-05 deg
tp 2458370.765863636111
(2018-Sep-09.26586364)
7.7762e-05 TDB
period 1196.186521097886
3.27
5.0735e-06
1.389e-08
d
yr
n .3009564090971231 1.2765e-09 deg/d
Q 2.414371387197686 6.8269e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2315  
   data-arc span      13237 days (36.24 yr)  
   first obs. used      1983-02-11  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46223  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:43:17  

Additional Information
 Earth MOID = 1.0129 au 
 Jupiter MOID = 2.75212 au 
 T_jup = 3.649 
[ 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 13.7   n/a MPO365363  
diameter diameter 4.435 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.392   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9541 Magri           Discovered 1983 Feb. 11 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Christopher Magri (b. 1961) is a scientist at the University of Maine at Farmington. A former galactic radio astronomer, he has used analyses of radar echoes from main-belt minor planets to demonstrate that there is no radar evidence for a difference between the surface bulk densities of the S and C objects.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1983 CH = 1995 VC19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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