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
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 ]  
10830 Desforges (1993 UT6)
Classification: Main-belt Asteroid          SPK-ID: 2010830
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752229748814035 3.0974e-08  
a 2.661718445332725 1.1343e-08 au
q 2.195324221044821 8.5556e-08 au
i 11.15116645284765 3.8267e-06 deg
node 178.7145066042398 1.9646e-05 deg
peri 307.6483540899053 2.3396e-05 deg
M 333.0900098110423 1.3831e-05 deg
tp 2459119.063943800527
6.1278e-05 TDB
period 1586.140294681504
n .2269660516204765 1.4509e-09 deg/d
Q 3.12811266962063 1.3331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      13821 days (37.84 yr)  
   first obs. used      1982-03-27  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:50:48  

Additional Information
 Earth MOID = 1.22897 au 
 Jupiter MOID = 1.98781 au 
 T_jup = 3.337 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO502252  
diameter diameter 9.390 km 0.203 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.804 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.080   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

10830 Desforges           Discovered 1993 Oct. 20 by E. W. Elst at the European Southern Observatory.
Jacques Desforges (1723-1791) was a French priest at Etampes, opposing the clergy by writing the pamphlet Avantages du mariage aux prêtres et évêques... (Brussels, 1758). The eight months he had to spend in the Bastille he used for planning the construction of a flying machine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1993 UT6 = 1982 FS2 = 1984 SS7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Apr-07 13:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin