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283990 Randallrosenfeld (2004 SG2)
Classification: Main-belt Asteroid          SPK-ID: 2283990
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.

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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2052294047428939 1.1337e-07  
a 2.360642819563449 5.2364e-08 AU
q 1.876169498893856 2.8968e-07 AU
i 2.353295831664861 1.3943e-05 deg
node 77.67671533733883 0.00027892 deg
peri 265.9667334696032 0.0002814 deg
M 304.0273124376346 4.648e-05 deg
tp 2457206.476420764306
0.00017601 JED
period 1324.780258095158
n .2717431798973422 9.0418e-09 deg/d
Q 2.845116140233043 6.3111e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      3487 days (9.55 yr)  
   first obs. used      2004-09-16  
   last obs. used      2014-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61015  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 09:52:57  

Additional Information
 Earth MOID = .870649 AU 
 T_jup = 3.522 
[ 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 17.8 mag n/a MPO254505  

283990 Randallrosenfeld           Discovered 2004 Sept. 16 by T. Glinos and W. Levy at Jarnac Observatory.
Randall Rosenfeld (b. 1959) is the national archivist of the Royal Astronomical Society of Canada. He has created a first-class archive that provides an insight on the development of Canadian astronomy in the last century, and has brought old but valuable observing records to light.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

Alternate Designations
 2004 SG2 = 2008 YM111 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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