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

The website will be upgraded in the next few minutes. You can expect short interruptions in service during that time. Details on the upgrade are available here.

JPL Small-Body Database Browser
Search: [ help ]  
916 America (A915 PE)
Classification: Main-belt Asteroid          SPK-ID: 2000916
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365934014642286 1.283e-08  
a 2.364378577411167 5.9158e-09 au
q 1.804982207432305 3.0734e-08 au
i 11.09665870568189 9.7196e-07 deg
node 329.7548544524496 4.366e-06 deg
peri 41.53405154965026 5.1525e-06 deg
M 12.75939852574001 6.2819e-06 deg
tp 2459349.434611048871
(2021-May-14.93461105)
2.3069e-05 TDB
period 1327.926233217466
3.64
4.9838e-06
1.364e-08
d
yr
n .271099396182382 1.0175e-09 deg/d
Q 2.923774947390029 7.3154e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2926  
   data-arc span      35610 days (97.49 yr)  
   first obs. used      1924-01-29  
   last obs. used      2021-07-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38683  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:08:22  

Additional Information
 Earth MOID = .818054 au 
 Jupiter MOID = 2.59394 au 
 T_jup = 3.486 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456431.5 (2013-May-19.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356153578981411 1.2773e-08  
q 1.808004490931198 3.0588e-08 au
tp 2456693.085756828355
(2014-Feb-04.58575683)
1.9382e-05 TDB
node 329.8151351751364 4.3681e-06 deg
peri 41.54505718781954 5.1768e-06 deg
i 11.09301772494429 9.7134e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2926  
   data-arc span      35610 days (97.49 yr)  
   first obs. used      1924-01-29  
   last obs. used      2021-07-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38683  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:08:22  

Additional Information
 Jupiter MOID = 2.59394 au 
 T_jup = 3.486 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.631420764104991E-16 -3.864136508244661E-16 1.132627329463814E-13 8.823063967924095E-15 8.563031581212699E-15 -1.17581213355392E-15
q -3.864136508244661E-16 9.356367335269933E-16 -2.523481873344558E-13 -2.027045465899603E-14 -1.606139339484896E-14 2.870865686995021E-15
tp 1.132627329463814E-13 -2.523481873344558E-13 3.756561071431441E-10 1.682062872097485E-11 5.924852291358883E-11 1.393899016619322E-12
node 8.823063967924095E-15 -2.027045465899603E-14 1.682062872097485E-11 1.908022775037294E-11 -1.477637163576428E-11 1.523114258163475E-13
peri 8.563031581212699E-15 -1.606139339484896E-14 5.924852291358883E-11 -1.477637163576428E-11 2.679950507227696E-11 1.378806235554193E-13
i -1.17581213355392E-15 2.870865686995021E-15 1.393899016619322E-12 1.523114258163475E-13 1.378806235554193E-13 9.435038138363993E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.52   n/a E2021B10  
diameter diameter 33.23 km 1.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16
rotation period rot_per 37.294 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Di Martino, M. (1986) in Asteroids, Comets, Meteors II. C.-I. Lagerkvist, B.A. Lindblad, M. Lundstedt, H. Rickman, eds. Uppsala, pp. 81-84.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Polakis, T. (2018) Minor Planet Bull. 45, 112-115.]
geometric albedo albedo 0.0530   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 16

916 America (A915 PE)          Discovered 1915-Aug-07 by Neujmin, G. at Simeis
Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-27 14:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin