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7886 Redman (1993 PE)
Classification: Main-belt Asteroid          SPK-ID: 2007886
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004752421144501 5.9433e-08  
a 2.380967516460888 1.1571e-08 au
q 2.141739228777839 1.4491e-07 au
i 3.925749537937895 5.0678e-06 deg
node 266.9178453367507 8.4771e-05 deg
peri 77.31715218157937 8.8308e-05 deg
M 70.48548820854344 2.4689e-05 deg
tp 2457337.760212802832
9.1756e-05 JED
period 1341.9262006263
n .268271086615629 1.9556e-09 deg/d
Q 2.620195804143937 1.2733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1191  
   data-arc span      23694 days (64.87 yr)  
   first obs. used      1951-02-04  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55666  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:05:23  

Additional Information
 Earth MOID = 1.13715 au 
 Jupiter MOID = 2.70326 au 
 T_jup = 3.528 
[ 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 14.1 mag n/a MPO347589  

7886 Redman           Discovered 1993 Aug. 12 by D. D. Balam at Climenhaga Observatory, University of Victoria.
Named in memory of Roderick Oliver Redman (1905-1975), professor of astronomy and longtime director of the University of Cambridge Observatories, and in honor of Russell Ormond Redman (b. 1951), a radio astronomer on the staff of the Dominion Astrophysical Observatory. The senior Redman established a lifelong association with the DAO when he obtained the observational material for his doctoral thesis there; he became renowned for his superlative observational techniques and designs for astronomical instrumentation. The junior Redman, whose association with the DAO began as a summer student assistant in 1970, has pioneered the study of minor planets at submillimeter wavelengths and is an authority in using the thermal emission spectra to study their surfaces. Citation prepared by P. A. Feldman at the request of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980610/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-06 20:39 UT
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