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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0380131166413582 1.2627e-08  
a 3.187490589463387 1.8402e-08 au
q 3.066324137892884 4.2046e-08 au
i 22.82628565995461 4.3165e-07 deg
node 98.27208263558191 3.1756e-06 deg
peri 220.7174399885167 3.712e-05 deg
M 44.65228897777907 3.556e-05 deg
tp 2459138.682127852810
(2020-Oct-16.18212785)
0.00020515 TDB
period 2078.604167844048
5.69
1.8e-05
4.928e-08
d
yr
n .173193148348873 1.4998e-09 deg/d
Q 3.30865704103389 1.9101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2155  
   data-arc span      13869 days (37.97 yr)  
   first obs. used      1982-12-23  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40108  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:00:12  

Additional Information
 Earth MOID = 2.06842 au 
 Jupiter MOID = 1.88548 au 
 T_jup = 3.074 
[ 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 12.16   n/a MPCxxxxx  
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. 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 0.094   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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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
1954-Sep-06 08:25 00:01 Jupiter 1.98398560944544 1.98398512062817 1.98398609826971 6.49889415433067 6.43286605628147 2434991.850836236 1.30888558939274 197.581346015731 7.24185047724616 -83.2322226811799 17535866.0644682 T 31 CATAB v2.0f-lin.ifort 2021-Apr-12 18:01:11 2021-Apr-12 18:01
1965-Oct-10 18:45 00:01 Jupiter 1.96766205635548 1.96766172481481 1.96766238789716 6.34281049649245 6.27457583578024 2439044.281015668 1.0931750587206 122.192132804611 13.2373123606477 85.2266846739386 14468745.7418468 T 31 CATAB v2.0f-lin.ifort 2021-Apr-12 18:01:11 2021-Apr-12 18:01
2108-Mar-29 18:57 00:02 Jupiter 1.94351107808806 1.94351069297771 1.94351146320669 6.43008418835996 6.36194475866782 2491079.289366321 2.12641997665914 260.775891407961 11.9454783636549 86.6205806637119 14149052.0955581 T 31 CATAB v2.0f-lin.ifort 2021-Apr-12 18:01:11 2021-Apr-12 18:01

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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