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
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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457621.5 (2016-Aug-21.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04023507223013006 1.2611e-08  
q 3.059885883382822 4.2434e-08 au
tp 2457090.558953708602
(2015-Mar-09.05895371)
0.00019429 TDB
node 98.32967172199325 3.1762e-06 deg
peri 226.3468999701077 3.5281e-05 deg
i 22.83167084873646 4.3118e-07 deg
  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
 Jupiter MOID = 1.88548 au 
 T_jup = 3.074 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.590438485088621E-16 -4.885584096967791E-16 4.652998632105266E-13 -6.61159223856295E-15 8.370452273864278E-14 2.15577681626719E-16
q -4.885584096967791E-16 1.800610577682267E-15 -1.629782732279195E-12 2.261059165408937E-14 -2.915781119315964E-13 -6.179332593168793E-16
tp 4.652998632105266E-13 -1.629782732279195E-12 3.774873168097437E-8 1.126582489787031E-10 6.830152457202394E-9 -1.081883951956583E-11
node -6.61159223856295E-15 2.261059165408937E-14 1.126582489787031E-10 1.008839689068139E-11 1.148438137595478E-11 5.737009901635803E-14
peri 8.370452273864278E-14 -2.915781119315964E-13 6.830152457202394E-9 1.148438137595478E-11 1.24472367238161E-9 -1.955954076880925E-12
i 2.15577681626719E-16 -6.179332593168793E-16 -1.081883951956583E-11 5.737009901635803E-14 -1.955954076880925E-12 1.859190430577339E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-01 05:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin