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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
283990 Randallrosenfeld (2004 SG2)
Classification: Main-belt Asteroid          SPK-ID: 2283990
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2036532576177839 5.2891e-08  
a 2.361041829254653 2.1181e-08 au
q 1.880207969355092 1.2036e-07 au
i 2.353454946752436 6.4393e-06 deg
node 77.65111256036921 0.00014304 deg
peri 266.0798539934143 0.00014464 deg
M 18.57327208079639 1.8494e-05 deg
tp 2458532.134047515649
(2019-Feb-17.63404752)
6.7745e-05 TDB
period 1325.116155478782
3.63
1.7832e-05
4.882e-08
d
yr
n .2716742970127983 3.6558e-09 deg/d
Q 2.841875689154215 2.5495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      4993 days (13.67 yr)  
   first obs. used      2004-09-16  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52804  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:03:04  

Additional Information
 Earth MOID = .87338 au 
 Jupiter MOID = 2.56273 au 
 T_jup = 3.522 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO450180  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin