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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03801311657781322 1.2627e-08  
a 3.18749059049565 1.8304e-08 au
q 3.066324139088456 4.1994e-08 au
i 22.82628565359073 4.316e-07 deg
node 98.27208263985287 3.1755e-06 deg
peri 220.7174394305435 3.711e-05 deg
M 44.65228932521774 3.5556e-05 deg
tp 2459138.682125721493
(2020-Oct-16.18212572)
0.00020513 TDB
period 2078.604168853777
5.69
1.7905e-05
4.902e-08
d
yr
n .1731931482647406 1.4919e-09 deg/d
Q 3.308657041902844 1.9e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      14109 days (38.63 yr)  
   first obs. used      1982-12-23  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 18:26:37  

Additional Information
 Earth MOID = 2.06842 au 
 Jupiter MOID = 1.88548 au 
 T_jup = 3.074 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457642.5 (2016-Sep-11.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04024109286233551 1.2608e-08  
q 3.059812633777414 4.2364e-08 au
tp 2457090.433196170565
(2015-Mar-08.93319617)
0.00019421 TDB
node 98.32924643640567 3.1761e-06 deg
peri 226.322575242566 3.5268e-05 deg
i 22.83190332196129 4.3114e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      14109 days (38.63 yr)  
   first obs. used      1982-12-23  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 18:26:37  

Additional Information
 Jupiter MOID = 1.88548 au 
 T_jup = 3.074 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.589706963672224E-16 -4.880307016415935E-16 4.629723392735194E-13 -6.614804860015934E-15 8.328102897621068E-14 2.157279868083361E-16
q -4.880307016415935E-16 1.794734333017226E-15 -1.614712352769136E-12 2.257989967033828E-14 -2.888272134180218E-13 -6.144604613727855E-16
tp 4.629723392735194E-13 -1.614712352769136E-12 3.771888659102833E-8 1.127146675650335E-10 6.824927415802099E-9 -1.082738715870067E-11
node -6.614804860015934E-15 2.257989967033828E-14 1.127146675650335E-10 1.008763558128196E-11 1.149594017644467E-11 5.73301012254718E-14
peri 8.328102897621068E-14 -2.888272134180218E-13 6.824927415802099E-9 1.149594017644467E-11 1.243809656453738E-9 -1.95752211006059E-12
i 2.157279868083361E-16 -6.144604613727855E-16 -1.082738715870067E-11 5.73301012254718E-14 -1.95752211006059E-12 1.858832861228659E-13

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

[ show close-approach data ]
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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