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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07739192610669357 3.2842e-08  
a 3.015411803342138 1.5572e-08 au
q 2.782043275876632 9.6847e-08 au
i 9.328348124111997 3.9378e-06 deg
node 321.5185699707511 2.2894e-05 deg
peri 317.0952784712457 3.5669e-05 deg
M 161.3843891133423 2.8353e-05 deg
tp 2458143.112012586140
(2018-Jan-24.61201259)
0.00014996 TDB
period 1912.574550517486
5.24
1.4815e-05
4.056e-08
d
yr
n .1882279568671426 1.4581e-09 deg/d
Q 3.248780330807645 1.6777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2644  
   data-arc span      25447 days (69.67 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:00:58  

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. 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1941-Sep-18 09:11 00:02 Jupiter 1.95727880175911 1.95727840585565 1.95727919766257 2.7972901658866 2.63805267897627 2430255.882307244 1.83399181443089 61.6230686470185 13.1143207630116 -78.1560798160831 3549841.41360836 T 42 CATAB v2.0f-lin.ifort 2020-May-20 02:01:11 2020-May-20 02:01
1988-Jun-16 04:16 < 00:01 Jupiter 1.98065307429959 1.9806526687471 1.98065347985209 2.84490341318531 2.69038644781889 2447328.677917473 0.690498689596773 37.6811492859638 12.0467443149541 -73.1437044427586 3866386.34824869 T 42 CATAB v2.0f-lin.ifort 2020-May-20 02:01:11 2020-May-20 02:01
2072-Dec-09 13:16 00:01 Jupiter 1.96056657283199 1.96056622101482 1.96056692464928 3.33760648950084 3.20555114773462 2478186.052648897 1.3928122754822 75.9320462846261 12.7505388803003 -82.5361109347363 3931913.65520764 T 42 CATAB v2.0f-lin.ifort 2020-May-20 02:01:11 2020-May-20 02:01
2119-Sep-18 17:13 00:03 Jupiter 1.95675340626526 1.95675295530127 1.95675385722981 2.90821529235189 2.75535359960311 2495269.217332114 2.61811268663193 88.7643579668135 11.8920727150882 -74.9545185742007 3840595.42687025 T 42 CATAB v2.0f-lin.ifort 2020-May-20 02:01:11 2020-May-20 02:01
2166-Jun-18 21:27 00:04 Jupiter 1.99139062048794 1.99138999062489 1.99139125035212 2.88418574657906 2.73273543767593 2512344.394005441 3.83672671811917 97.5438614144222 13.1454965343237 -81.5728509311161 3466129.89092615 T 42 CATAB v2.0f-lin.ifort 2020-May-20 02:01:11 2020-May-20 02:01

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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