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23472 Rolfriekher (1990 TZ10)
Classification: Main-belt Asteroid          SPK-ID: 2023472
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1570729703901027 5.6795e-08  
a 2.608458415208796 1.4268e-08 au
q 2.198740103792891 1.55e-07 au
i 13.99008474105587 5.1987e-06 deg
node 211.0713139323273 1.6977e-05 deg
peri 139.1584760767795 2.2681e-05 deg
M 35.11644554835256 1.3079e-05 deg
tp 2458850.399426043887
(2020-Jan-01.89942604)
5.5738e-05 TDB
period 1538.772098952811
4.21
1.2625e-05
3.457e-08
d
yr
n .2339527732826667 1.9195e-09 deg/d
Q 3.018176726624702 1.6509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      12793 days (35.03 yr)  
   first obs. used      1985-07-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:00:43  

Additional Information
 Earth MOID = 1.21417 au 
 Jupiter MOID = 2.51575 au 
 T_jup = 3.352 
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Orbital Elements at Epoch 2456715.5 (2014-Feb-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592594321213048 5.7045e-08  
q 2.192107956548293 1.5603e-07 au
tp 2457312.025431521162
(2015-Oct-16.52543152)
5.4374e-05 TDB
node 211.1175536257252 1.6958e-05 deg
peri 139.3027584728178 2.2481e-05 deg
i 14.00182210393754 5.2046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      12793 days (35.03 yr)  
   first obs. used      1985-07-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:00:43  

Additional Information
 Jupiter MOID = 2.51575 au 
 T_jup = 3.352 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.254163107983024E-15 -8.882052219534143E-15 6.946702913458276E-13 -2.04336955629842E-15 2.999731772875665E-13 -1.279591294028504E-14
q -8.882052219534143E-15 2.434503035739465E-14 -1.886391003855104E-12 5.300765562300486E-15 -8.292238757537968E-13 3.529490126242966E-14
tp 6.946702913458276E-13 -1.886391003855104E-12 2.956560970434141E-9 -4.026106673823627E-12 8.049259260318783E-10 1.852094608336017E-12
node -2.04336955629842E-15 5.300765562300486E-15 -4.026106673823627E-12 2.875604020226292E-10 -2.798177910086502E-10 -1.960841994926176E-11
peri 2.999731772875665E-13 -8.292238757537968E-13 8.049259260318783E-10 -2.798177910086502E-10 5.054117924073247E-10 1.914415221555066E-11
i -1.279591294028504E-14 3.529490126242966E-14 1.852094608336017E-12 -1.960841994926176E-11 1.914415221555066E-11 2.708837834142745E-11

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 14.4   n/a MPO449127  
diameter diameter 4.128 km 1.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.164   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23472 Rolfriekher           Discovered 1990 Oct. 10 by L. D. Schmadel and F. Börngen at Tautenburg.
Rolf Riekher (b. 1922) is a German optician who specialized in the history of optics and astronomy and related instruments. He discussed telescopes from ancient times to the present in Fernrohre und ihre Meister. He has also studied Fraunhofer's life and Kepler's work on optics. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070106/MPCPages.arcLast Updated: 2007-01-09

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Alternate Designations
 1990 TZ10 = 2000 AU165 
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