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9468 Brewer (1998 LT2)
Classification: Main-belt Asteroid          SPK-ID: 2009468
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429963084228059 3.4876e-08  
a 2.32036780174562 7.8436e-09 au
q 1.988563771912855 8.2421e-08 au
i 10.00885245200665 3.8746e-06 deg
node 197.2365146666838 2.0533e-05 deg
peri 159.0010178498308 2.4494e-05 deg
M 1.73014225804765 1.4462e-05 deg
tp 2458994.295411472977
(2020-May-24.79541147)
5.1853e-05 TDB
period 1291.022087541314
3.53
6.5461e-06
1.792e-08
d
yr
n .2788488310727524 1.4139e-09 deg/d
Q 2.652171831578385 8.9652e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1417  
   data-arc span      14190 days (38.85 yr)  
   first obs. used      1981-09-24  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:08:20  

Additional Information
 Earth MOID = .988569 au 
 Jupiter MOID = 2.81696 au 
 T_jup = 3.544 
[ 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 14.5   n/a MPO337338  
diameter diameter 6.061 km 1.544 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.076   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

9468 Brewer           Discovered 1998 June 1 by E. W. Elst at the European Southern Observatory.
Named in honor of James Brewer, ESO astronomer working on stellar populations and carbon stars. Using intermediate band photometry, he has identified C- and M-type stars in M31 and demonstrated that the ratio of these stars tracks the metallicity gradient in the disk. He is currently working on the globular clusters of the Fornax dwarf spheroidal galaxy. During 1998 he was of great help to the discoverer in obtaining observations with the ESO Schmidt.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1998 LT2 = 1981 SA9 = 1981 UP26 = 1988 UU = 1997 EB31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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