Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
9995 Alouette (4805 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2009995
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603766181724965 4.9829e-08  
a 2.390734752752491 1.1769e-08 au
q 2.007316798158587 1.1794e-07 au
i 2.313073892595238 5.9572e-06 deg
node 20.87794995398072 0.00012493 deg
peri 198.1723836517977 0.00012619 deg
M 122.4391705723816 1.993e-05 deg
tp 2456941.287821659675
(2014-Oct-10.78782166)
7.3493e-05 JED
period 1350.191964137718
3.70
9.97e-06
2.73e-08
d
yr
n .2666287532157763 1.9688e-09 deg/d
Q 2.774152707346396 1.3656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      23709 days (64.91 yr)  
   first obs. used      1950-12-09  
   last obs. used      2015-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55654  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:04:22  

Additional Information
 Earth MOID = .999228 au 
 Jupiter MOID = 2.19848 au 
 T_jup = 3.514 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO302127  

9995 Alouette           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
The first Canadian satellite Alouette-1 was launched on 1962 Sept. 29. It was engaged in research and exploration of the upper atmosphere, especially the ionosphere. During its six-year lifespan it returned the first useful data on the ionosphere. The citation was prepared by W. Fröger.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 4805 P-L = 1981 EP22 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-07 17:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin