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JPL Small-Body Database Browser
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12111 Ulm (1998 LU)
Classification: Main-belt Asteroid          SPK-ID: 2012111
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06656428932622151 3.0487e-08  
a 2.560550100948809 9.3282e-09 au
q 2.390108903194966 7.7561e-08 au
i 3.88776012314358 3.0329e-06 deg
node 250.0521775926245 6.2353e-05 deg
peri 341.7054702717187 7.0062e-05 deg
M 148.0967357613806 3.22e-05 deg
tp 2458384.839445517275
(2018-Sep-23.33944552)
0.00013358 TDB
period 1496.57450904855
4.10
8.1782e-06
2.239e-08
d
yr
n .2405493330424762 1.3145e-09 deg/d
Q 2.730991298702651 9.9492e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1794  
   data-arc span      10854 days (29.72 yr)  
   first obs. used      1990-04-29  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:15:05  

Additional Information
 Earth MOID = 1.37933 au 
 Jupiter MOID = 2.25926 au 
 T_jup = 3.429 
[ 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 13.9   n/a MPO279644  
diameter diameter 4.220 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.328   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12111 Ulm           Discovered 1998 June 1 by E. W. Elst at the European Southern Observatory.
Ulm is a city in Germany on the banks of the Donau river. Until World War II it was one of the most beautiful cities remaining from the Middle Ages, with a five-ships cathedral and its 161-m tower. In 1879 the famous physicist Albert Einstein was born there.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1998 LU = 1990 HB7 = 1996 XJ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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