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3914 Kotogahama (1987 SE)
Classification: Main-belt Asteroid          SPK-ID: 2003914
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07739192609194483 3.2893e-08  
a 3.015411803728241 1.5595e-08 au
q 2.782043276277327 9.706e-08 au
i 9.328347648679609 3.969e-06 deg
node 321.5185680577356 2.292e-05 deg
peri 317.095280007533 3.5763e-05 deg
M 161.3843894304617 2.8423e-05 deg
tp 2458143.112010736703
(2018-Jan-24.61201074)
0.00015036 TDB
period 1912.574550884824
5.24
1.4837e-05
4.062e-08
d
yr
n .1882279568309906 1.4602e-09 deg/d
Q 3.248780331179155 1.6802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2585  
   data-arc span      25377 days (69.48 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:59:03  

Additional Information
 Earth MOID = 1.77429 au 
 Jupiter MOID = 1.96193 au 
 T_jup = 3.223 
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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 11.7   n/a MPO358667  
diameter diameter 14.859 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.716 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.]
geometric albedo albedo 0.201   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3914 Kotogahama (1987 SE)          Discovered 1987-Sep-16 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1987 SE = 1950 PS = 1971 OJ1 = 1979 BM1 = 1984 BJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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