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JPL Small-Body Database Browser
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21686 Koschny (1999 RB36)
Classification: Main-belt Asteroid          SPK-ID: 2021686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1106512319796431 3.5721e-08  
a 2.283172326312098 8.9883e-09 au
q 2.030536495583836 8.0581e-08 au
i 1.723039637237543 3.9596e-06 deg
node 43.78640644575164 0.00012025 deg
peri 185.5785767032219 0.00012171 deg
M 112.6287519058088 1.6786e-05 deg
tp 2458606.266763538417
(2019-May-02.76676354)
5.9244e-05 TDB
period 1260.104216060749
3.45
7.4411e-06
2.037e-08
d
yr
n .2856906559089273 1.6871e-09 deg/d
Q 2.535808157040359 9.9829e-09 au
  Orbit Determination Parameters
   # obs. used (total)      850  
   data-arc span      23688 days (64.85 yr)  
   first obs. used      1954-08-27  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:29:27  

Additional Information
 Earth MOID = 1.02023 au 
 Jupiter MOID = 2.44577 au 
 T_jup = 3.595 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO474050  

21686 Koschny           Discovered 1999 Sept. 11 by A. Knöfel at Drebach.
Aerospace engineer Detlef Koschny (b. 1962) is a member of the Rosetta Project Scientists' Team of the European Space Research and Technology Center of the European Space Agency. He is also an active amateur astronomer and works on the subject of groundbased observations of meteors with intensified video cameras.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 RB36 = 1981 JR4 = 1998 FQ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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