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20512 Rothenberg (1999 RW32)
Classification: Main-belt Asteroid          SPK-ID: 2020512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0854387340919997 3.5408e-08  
a 3.059093858864002 1.5685e-08 au
q 2.797728752094051 1.1355e-07 au
i 8.577165135100017 4.9942e-06 deg
node 308.7358454608615 2.8606e-05 deg
peri 105.1077735321319 4.6024e-05 deg
M 323.6957809828213 3.4369e-05 deg
tp 2459397.579852216676
(2021-Jul-02.07985222)
0.00018652 TDB
period 1954.28379176622
5.35
1.503e-05
4.115e-08
d
yr
n .1842107075322174 1.4168e-09 deg/d
Q 3.320458965633952 1.7025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1598  
   data-arc span      10960 days (30.01 yr)  
   first obs. used      1991-02-10  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47208  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:01  

Additional Information
 Earth MOID = 1.82441 au 
 Jupiter MOID = 1.97412 au 
 T_jup = 3.212 
[ 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 13.63   n/a E2021B10  

20512 Rothenberg           Discovered 1999 Sept. 10 by A. Knöfel at Drebach.
Eckehard Rothenberg (b. 1938) is technical director of the Archenhold Observatory in Berlin-Treptow and in the past leader of a youth study group there. Many of the group's former members (including the discoverer) are today active amateur and professional astronomers and owe him for a considerable share of their knowledge.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

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