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12926 Brianmason (1999 SO9)
Classification: Main-belt Asteroid          SPK-ID: 2012926
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2179645426850992 9.2758e-08  
a 2.692955464548095 2.3065e-08 AU
q 2.105986658246531 2.4526e-07 AU
i 8.774588000362133 8.3939e-06 deg
node 45.12968065091847 4.3243e-05 deg
peri 308.7275354044712 4.7419e-05 deg
M 94.25386731776945 2.5869e-05 deg
tp 2456377.890883256245
(2013-Mar-26.39088326)
0.00011385 JED
period 1614.143656459487
4.42
2.0738e-05
5.678e-08
d
yr
n .2230284761578379 2.8653e-09 deg/d
Q 3.279924270849659 2.8092e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      824  
   data-arc span      22734 days (62.24 yr)  
   first obs. used      1951-12-01  
   last obs. used      2014-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57103  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:01:00  

Additional Information
 Earth MOID = 1.11362 AU 
 T_jup = 3.320 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO190135  

12926 Brianmason           Discovered 1999 Sept. 27 by J. L. Schiff and C. J. Schiff at Takapuna.
Renowned New Zealand-born meteoriticist Brian Mason (b. 1917) worked at the American Museum of Natural History and the Smithsonian Institution. His research included the classification of Antarctic meteorites. The minerals brianite and stenhuggarite (Swedish for stone mason) are named for him.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1999 SO9 = 1982 VR = 1989 GM8 = 1998 HM40 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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