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6245 Ikufumi (1990 SO4)
Classification: Main-belt Asteroid          SPK-ID: 2006245
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784367514074196 3.7961e-08  
a 2.301284843471713 7.0648e-09 au
q 1.890651051939488 8.7622e-08 au
i 8.016036923207315 3.3983e-06 deg
node 299.7265083080847 2.5126e-05 deg
peri 52.46548604007575 2.6926e-05 deg
M 198.7162509353219 1.1071e-05 deg
tp 2459571.770899860270
(2021-Dec-23.27089986)
3.9857e-05 TDB
period 1275.128617373745
3.49
5.8719e-06
1.608e-08
d
yr
n .2823244613092098 1.3001e-09 deg/d
Q 2.711918635003937 8.3254e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2437  
   data-arc span      24126 days (66.05 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43341  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:28:57  

Additional Information
 Earth MOID = .896309 au 
 Jupiter MOID = 2.73394 au 
 T_jup = 3.557 
[ 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 13.3   n/a MPO458893  
diameter diameter 8.105 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.9222 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pray, D.; Pravec, P.; Hornoch, K.; et al (2018) CBET 4575.]
geometric albedo albedo 0.129   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6245 Ikufumi           Discovered 1990 Sept. 27 by T. Urata at the Nihondaira Observatory.
Named in honor of Ikufumi Makino (b. 1944), a telecommunications systems engineer and active amateur astronomer. His extensive knowledge of computer technologies has enabled him to contribute to astronomical magazines many articles about systems for making observations. He has played an important role in introducing and spreading the data-reduction tool Astrometrica in Japan. He is a collaborating member of the Nihondaira Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980610/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1990 SO4 = 1978 EE8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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