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5945 Roachapproach (1984 SQ3)
Classification: Main-belt Asteroid          SPK-ID: 2005945
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.
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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449372162553517 6.35e-08  
a 2.225649471584148 1.1143e-08 AU
q 1.903070032812547 1.4362e-07 AU
i 4.89304361143708 7.4947e-06 deg
node 21.87712004472937 7.2524e-05 deg
peri 297.89323798 7.7383e-05 deg
M 258.9745878887012 2.9146e-05 deg
tp 2456740.838990366564
(2014-Mar-24.33899037)		 9.9028e-05 JED
period 1212.784327937032
3.32		 9.108e-06
2.494e-08		 d
yr
n .2968376088866241 2.2293e-09 deg/d
Q 2.548228910355749 1.2758e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      22421 days (61.39 yr)  
   first obs. used      1951-11-30  
   last obs. used      2013-04-19  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .5369  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:19:19  

Additional Information
 Earth MOID = .896225 AU 
 T_jup = 3.627 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a PDS3 (MPC 28114)  

5945 Roachapproach           Discovered 1984 Sept. 28 by B. A. Skiff at the Anderson Mesa Station of Lowell Observatory.
Named in honor of Steve Roach, musician and composer of `space music'. Among the most progressive performers in the genre, his prolific output includes seminal works such as "Structures from Silence" (1984), "Dreamtime Return" (1988) and "The Magnificent Void" (1996). His mixture of heavily-processed electronic sounds with primitive woodwinds and percussion conveys powerful impressions of spatial immensity. These have inspired the discoverer through endless nights at the telescope. Name suggested by L. Kohanov.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980211/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1984 SQ3 = 1954 QC = 1954 SY = 1983 GL1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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