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25628 Kummer (2000 AZ50)
Classification: Main-belt Asteroid          SPK-ID: 2025628
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620066705478074 3.1792e-08  
a 2.29126947466904 5.7736e-09 au
q 1.920068535750086 7.2508e-08 au
i .7328295649226644 2.8277e-06 deg
node 71.95310630045745 0.00028035 deg
peri 261.5173449017969 0.0002805 deg
M 88.19708011442954 8.7627e-06 deg
tp 2458690.140968840439
(2019-Jul-25.64096884)
3.0897e-05 TDB
period 1266.813493966935
3.47
4.7883e-06
1.311e-08
d
yr
n .2841775855044661 1.0741e-09 deg/d
Q 2.662470413587995 6.709e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1644  
   data-arc span      11414 days (31.25 yr)  
   first obs. used      1988-11-03  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:31:18  

Additional Information
 Earth MOID = .909994 au 
 Jupiter MOID = 2.68629 au 
 T_jup = 3.580 
[ 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 15.0   n/a MPO502349  
diameter diameter 2.492 km 0.933 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.312   0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25628 Kummer           Discovered 2000 Jan. 7 by P. G. Comba at Prescott.
Ernst Eduard Kummer (1811-1893) was a professor at the Universities of Breslau and Berlin. He spent many years working on Fermat's last theorem and obtained a partial proof of it. In the process he developed some important concepts in algebra.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011130/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 2000 AZ50 = 1988 VM11 = 1998 QM7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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