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3569 Kumon (1938 DN1)
Classification: Main-belt Asteroid          SPK-ID: 2003569
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230599299218062 1.7022e-08  
a 2.592214376570939 1.0013e-08 au
q 2.273216657047821 4.6531e-08 au
i 14.02349384147358 9.7901e-07 deg
node 161.8134552273093 3.657e-06 deg
peri 314.9610384938269 8.7785e-06 deg
M 343.6732303099682 9.2162e-06 deg
tp 2459269.635731924712
(2021-Feb-24.13573192)
3.9126e-05 TDB
period 1524.420566065319
4.17
8.8329e-06
2.418e-08
d
yr
n .2361553025548558 1.3683e-09 deg/d
Q 2.911212096094057 1.1246e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2622  
   data-arc span      30327 days (83.03 yr)  
   first obs. used      1938-02-20  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 15:24:51  

Additional Information
 Earth MOID = 1.30867 au 
 Jupiter MOID = 2.18138 au 
 T_jup = 3.366 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457338.5 (2015-Nov-12.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1213847613256047 1.7025e-08  
q 2.27797108121044 4.6527e-08 au
tp 2457745.288983504402
(2016-Dec-22.78898350)
3.8414e-05 TDB
node 161.9047726467523 3.652e-06 deg
peri 314.8991546324967 8.8936e-06 deg
i 14.02846521787493 9.7997e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2622  
   data-arc span      30327 days (83.03 yr)  
   first obs. used      1938-02-20  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 15:24:51  

Additional Information
 Jupiter MOID = 2.18138 au 
 T_jup = 3.366 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.898563892982067E-16 -7.78188203474897E-16 -5.818312655109787E-14 1.744165871032503E-14 -4.841042542037446E-15 5.966938679298124E-15
q -7.78188203474897E-16 2.164750898575732E-15 1.592325618258412E-13 -4.525992524065421E-14 6.948022055462785E-15 -1.536492115946418E-14
tp -5.818312655109787E-14 1.592325618258412E-13 1.475624349582807E-9 6.004810019400294E-12 3.116630568698403E-10 8.45891523586126E-12
node 1.744165871032503E-14 -4.525992524065421E-14 6.004810019400294E-12 1.333703195260559E-11 -1.040379756212029E-11 3.095084766611853E-12
peri -4.841042542037446E-15 6.948022055462785E-15 3.116630568698403E-10 -1.040379756212029E-11 7.909559163497231E-11 -8.399336974987856E-13
i 5.966938679298124E-15 -1.536492115946418E-14 8.45891523586126E-12 3.095084766611853E-12 -8.399336974987856E-13 9.60338773003555E-13

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 12.5   n/a MPO502187  
diameter diameter 7.700 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.49 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Clark, M. (2019) Minor Planet Bull. 46, 346-349.]
geometric albedo albedo 0.248   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3569 Kumon (1938 DN1)          Discovered 1938-Feb-20 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 DN1 = 1955 GB = 1984 DJ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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