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31231 Uthmann (1998 CA)
Classification: Main-belt Asteroid          SPK-ID: 2031231
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2336517562552818 6.56e-08  
a 2.577472830499281 2.7885e-08 AU
q 1.975241776952852 1.7877e-07 AU
i 9.397833916756687 8.442e-06 deg
node 95.72407821271094 4.7891e-05 deg
peri 21.09379215131016 5.7457e-05 deg
M 31.7775385701769 3.5167e-05 deg
tp 2456867.084181585443
(2014-Jul-28.58418159)
0.00014583 JED
period 1511.435334211699
4.14
2.4528e-05
6.715e-08
d
yr
n .2381841894597236 3.8653e-09 deg/d
Q 3.17970388404571 3.44e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      22479 days (61.54 yr)  
   first obs. used      1953-06-14  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56181  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:23:35  

Additional Information
 Earth MOID = .994713 AU 
 T_jup = 3.369 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6 mag n/a MPO279840  

31231 Uthmann           Discovered 1998 Feb. 1 by J. Kandler and G. Lehmann at Volkssternwarte Drebach.
Barbara Uthmann (1514-1575) is said to have introduced the art of making lace into the Erzgebirge mountains in Saxony. After her husband's death in 1553, she successfully continued to manage his businesses and established a braid production, thus helping poor miner families to a new way of earning money.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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