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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07725497660875748 1.0526e-08  
a 3.015810067710114 1.364e-08 au
q 2.782823731472714 3.7567e-08 au
i 9.32873101127713 3.1486e-07 deg
node 321.5160625308434 2.2327e-06 deg
peri 317.1949232617861 1.6688e-05 deg
M 198.9130803619767 1.9034e-05 deg
tp 2460056.477172650716
(2023-Apr-21.97717265)
0.00010241 TDB
period 1912.9534716208
5.24
1.2978e-05
3.553e-08
d
yr
n .1881906723507397 1.2768e-09 deg/d
Q 3.248796403947514 1.4694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3121  
   data-arc span      25787 days (70.60 yr)  
   first obs. used      1950-08-14  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41076  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:18:00  

Additional Information
 Earth MOID = 1.77313 au 
 Jupiter MOID = 1.96119 au 
 T_jup = 3.223 
[ 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 11.80   n/a E2021B10  
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. 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:
[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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