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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169957984288918 3.2973e-08  
a 2.341178195858331 7.8517e-09 au
q 1.943276268829083 7.7232e-08 au
i 5.841043916636078 4.0938e-06 deg
node 224.761297190122 3.3073e-05 deg
peri 105.9949116042306 3.5171e-05 deg
M 220.0602172046908 1.4069e-05 deg
tp 2459109.114605945073
(2020-Sep-16.61460595)
5.247e-05 TDB
period 1308.428914800087
3.58
6.5822e-06
1.802e-08
d
yr
n .275139135132155 1.3841e-09 deg/d
Q 2.739080122887578 9.1862e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1812  
   data-arc span      10220 days (27.98 yr)  
   first obs. used      1991-05-18  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54595  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:02:12  

Additional Information
 Earth MOID = .941809 au 
 Jupiter MOID = 2.63063 au 
 T_jup = 3.538 
[ 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-January); 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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