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 ]

[ 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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08969711362268723 5.553e-08  
a 3.384405990927992 2.4972e-08 au
q 3.08083454221442 1.9264e-07 au
i 19.15276562415636 5.654e-06 deg
node 4.087958073292764 1.1684e-05 deg
peri 351.1312971593418 2.5715e-05 deg
M 210.345107898628 2.5182e-05 deg
tp 2459945.888961216214
(2023-Jan-01.38896122)
0.00016365 TDB
period 2274.165723946401
6.23
2.517e-05
6.891e-08
d
yr
n .158299809116499 1.752e-09 deg/d
Q 3.687977439641563 2.7212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2178  
   data-arc span      24027 days (65.78 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38261  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:56:41  

Additional Information
 Earth MOID = 2.07849 au 
 Jupiter MOID = 1.76679 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 11.0   n/a MPO395028  
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 2020-Aug-10 03:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin