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21664 Konradzuse (1999 RG1)
Classification: Main-belt Asteroid          SPK-ID: 2021664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090542291075524 3.372e-08  
a 2.612945501052383 1.168e-08 au
q 2.06669819362983 8.7803e-08 au
i 9.553255470452669 5.9117e-06 deg
node 29.5538289556195 2.9163e-05 deg
peri 71.103370277617 3.3827e-05 deg
M 324.8521171379358 1.8426e-05 deg
tp 2459547.122767825630
(2021-Nov-28.62276783)
7.9498e-05 TDB
period 1542.744313506066
4.22
1.0345e-05
2.832e-08
d
yr
n .2333503982794518 1.5647e-09 deg/d
Q 3.159192808474936 1.4122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      12077 days (33.07 yr)  
   first obs. used      1988-01-11  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:20  

Additional Information
 Earth MOID = 1.10634 au 
 Jupiter MOID = 2.10336 au 
 T_jup = 3.358 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457249.5 (2015-Aug-15.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078868286914445 3.289e-08  
q 2.071083919969893 8.5295e-08 au
tp 2457997.808184184115
(2017-Sep-01.30818418)
7.5268e-05 TDB
node 29.82474018449544 2.9063e-05 deg
peri 69.93536079701225 3.3965e-05 deg
i 9.572741287543179 5.914e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      12077 days (33.07 yr)  
   first obs. used      1988-01-11  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:20  

Additional Information
 Jupiter MOID = 2.10336 au 
 T_jup = 3.358 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.081746953105546E-15 -2.787795922570514E-15 8.989186367172982E-13 1.366514931493664E-15 2.202765337545656E-13 -7.285687385793677E-16
q -2.787795922570514E-15 7.275308020253872E-15 -1.985149928664241E-12 -4.625038470047357E-15 -5.006277012571578E-13 2.129820669306745E-15
tp 8.989186367172982E-13 -1.985149928664241E-12 5.665228819150701E-9 -2.360727543061095E-12 1.348459353526619E-9 -3.126591392040051E-12
node 1.366514931493664E-15 -4.625038470047357E-15 -2.360727543061095E-12 8.446851857447186E-10 -8.328119164692463E-10 -9.481001192417234E-11
peri 2.202765337545656E-13 -5.006277012571578E-13 1.348459353526619E-9 -8.328119164692463E-10 1.153644701117738E-9 9.270240591036571E-11
i -7.285687385793677E-16 2.129820669306745E-15 -3.126591392040051E-12 -9.481001192417234E-11 9.270240591036571E-11 3.497565751195497E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.44   n/a E2021B10  
diameter diameter 4.156 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.195   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21664 Konradzuse           Discovered 1999 Sept. 4 by L. Šarounová at Ondřejov.
German engineer Konrad Zuse (1910-1995) developed and built the first binary digital computer. Working in complete isolation and secrecy, in 1941 he completed the Z3, the first operational program-controlled computer, before fleeing to Switzerland. Zuse computers were the first to be used by astronomers in Czechoslovakia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 RG1 = 1988 AR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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