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
JPL Small-Body Database Browser
Search: [ help ]  
3368 Duncombe (1985 QT)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003368
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08989989614270277 5.427e-08  
a 3.383903846178944 2.4738e-08 au
q 3.079691241850564 1.8846e-07 au
i 19.15411013596781 5.5129e-06 deg
node 4.089971447687117 1.1523e-05 deg
peri 351.1439816345672 2.5478e-05 deg
M 242.0080631732013 2.5195e-05 deg
tp 2459945.704171383085
(2023-Jan-01.20417138)
0.00016282 TDB
period 2273.659615332117
6.22
2.4933e-05
6.826e-08
d
yr
n .1583350460959013 1.7363e-09 deg/d
Q 3.688116450507323 2.6962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2279  
   data-arc span      24302 days (66.54 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:55:15  

Additional Information
 Earth MOID = 2.0757 au 
 Jupiter MOID = 1.7676 au 
 T_jup = 3.055 
[ 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 11.11   n/a E2021B10  
diameter diameter 33.331 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.087   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3368 Duncombe (1985 QT)          Discovered 1985-Aug-22 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 QT = 1954 RG = 1954 RN = 1970 GH1 = 1973 SP5 = 1976 GJ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 17:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin