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12400 Katumaru (1995 OA1)
Classification: Main-belt Asteroid          SPK-ID: 2012400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699110704476688 3.0728e-08  
a 2.34231773247566 5.6225e-09 au
q 1.944332019222164 7.3469e-08 au
i 5.838951818769243 2.7037e-06 deg
node 224.7486233624198 3.1785e-05 deg
peri 105.8111652521719 3.2964e-05 deg
M 330.269368030283 7.7683e-06 deg
tp 2459108.635620427624
(2020-Sep-16.13562043)
2.8214e-05 TDB
period 1309.384320979006
3.58
4.7146e-06
1.291e-08
d
yr
n .2749383769395021 9.8995e-10 deg/d
Q 2.740303445729156 6.5779e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2297  
   data-arc span      10758 days (29.45 yr)  
   first obs. used      1991-05-18  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:53:12  

Additional Information
 Earth MOID = .943721 au 
 Jupiter MOID = 2.631 au 
 T_jup = 3.537 
[ 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 14.4   n/a MPO337363  
rotation period rot_per 2.610 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

12400 Katumaru           Discovered 1995 July 28 by T. Okuni at Nanyo.
Katumaru Okuni (b. 1932) is the younger brother of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1995 OA1 = 1991 KR2 = 1998 KL15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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