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5815 Shinsengumi (1989 AH)
Classification: Main-belt Asteroid          SPK-ID: 2005815
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03979195013590524 4.5174e-08  
a 3.19332220459746 2.6163e-08 au
q 3.066253686664238 1.5698e-07 au
i 22.83875881562417 4.8352e-06 deg
node 98.30630933514405 1.3643e-05 deg
peri 221.811743016172 8.9202e-05 deg
M 335.0910127065717 9.1096e-05 deg
tp 2459144.716884219309
(2020-Oct-22.21688422)
0.0005277 TDB
period 2084.311084483497
5.71
2.5615e-05
7.013e-08
d
yr
n .172718939451982 2.1226e-09 deg/d
Q 3.320390722530681 2.7204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1769  
   data-arc span      13418 days (36.74 yr)  
   first obs. used      1982-12-23  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42071  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:51:56  

Additional Information
 Earth MOID = 2.07034 au 
 Jupiter MOID = 1.87967 au 
 T_jup = 3.072 
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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 12.1   n/a MPO448972  
diameter diameter 18.081 km 3.552 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 37.923 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 0.094   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5815 Shinsengumi (1989 AH)          Discovered 1989-Jan-03 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1989 AH = 1982 YB4 = 1990 FE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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