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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230599596009245 3.4927e-08  
a 2.592214375473761 1.0141e-08 au
q 2.273216579151024 9.2219e-08 au
i 14.0234941473337 4.1152e-06 deg
node 161.8134643653984 1.2569e-05 deg
peri 314.9610316684827 1.8672e-05 deg
M 343.6732271084915 1.3787e-05 deg
tp 2459269.635745437477
(2021-Feb-24.13574544)		 5.8461e-05 TDB
period 1524.420565097482
4.17		 8.9456e-06
2.449e-08		 d
yr
n .2361553027047881 1.3858e-09 deg/d
Q 2.911212171796497 1.1389e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2567  
   data-arc span      30286 days (82.92 yr)  
   first obs. used      1938-02-20  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40631  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:11:37  

Additional Information
 Earth MOID = 1.30867 au 
 Jupiter MOID = 2.18138 au 
 T_jup = 3.366 
[ 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 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

[ show close-approach data ]
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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