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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07739192558670943 3.2629e-08  
a 3.015411802768155 1.5182e-08 au
q 2.782043276915037 9.6508e-08 au
i 9.328348485560973 3.8522e-06 deg
node 321.5185724884379 2.2119e-05 deg
peri 317.0952771229705 3.4553e-05 deg
M 161.3843881584235 2.7826e-05 deg
tp 2458143.112017904149
(2018-Jan-24.61201790)
0.00014685 TDB
period 1912.574549971398
5.24
1.4444e-05
3.955e-08
d
yr
n .1882279569208863 1.4215e-09 deg/d
Q 3.248780328621273 1.6357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2794  
   data-arc span      25660 days (70.25 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41583  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:14:50  

Additional Information
 Earth MOID = 1.77429 au 
 Jupiter MOID = 1.96193 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 11.7   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. 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

[ show close-approach data ]
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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