Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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 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

[ hide close-approach data ]
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 1.98398560071803 1.98398511423907 1.98398608720387 6.49889415039826 6.43286605201675 2434991.850824712 1.30196919717483 196.532193163896 7.24183093859952 -83.2319137406149 17536036.5970277 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 18:27:38 2021-Aug-24 18:27
1965-Oct-10 18:45 00:01 Jupiter 1.96766205997281 1.96766172914081 1.96766239080581 6.34281043209418 6.27457577080777 2439044.280995206 1.08742361484144 121.545310669524 13.2370547210308 85.2304373545492 14468956.5255375 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 18:27:38 2021-Aug-24 18:27
2108-Mar-29 18:57 00:02 Jupiter 1.94351107208295 1.94351068838957 1.94351145578462 6.43008420576163 6.36194477604421 2491079.289392810 2.11503076113939 259.397289652539 11.9449161030132 86.6231378909679 14150019.9324228 T 32 CATAB v2.0g-lin.ifort 2021-Aug-24 18:27:38 2021-Aug-24 18:27

Alternate Designations
 1989 AH = 1982 YB4 = 1990 FE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-24 19:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin