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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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1932-Jul-12 14:06 00:03 Jupiter 1.83442269071989 1.83442080749724 1.83442457411364 4.58042814306558 4.47848703703118 2426901.087172552 3.17708022518294 1019.1643265828 42.497391234691 85.0938995307127 2775611.13052808 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
1945-May-02 02:51 00:02 Jupiter 1.68568634089498 1.68568579908206 1.68568688270791 4.9537465833439 4.85125206415802 2431577.618718456 2.22144434673957 178.010960190906 26.1685918276366 -89.5543069922518 3401298.98683424 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
1958-Feb-10 02:23 00:02 Jupiter 1.82573607783187 1.82573503473295 1.82573712094532 4.85960740659252 4.76318323564618 2436244.599612625 1.85384328590453 482.532477730957 43.0212665529684 86.3903450702953 3256699.17895496 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2010-Jul-05 13:52 < 00:01 Jupiter 1.89466778313735 1.89466723707229 1.89466832920403 6.57587016040295 6.50753074989065 2455383.077760573 0.249566768965955 283.23598802978 24.9323242842397 88.1360159298085 3769972.34967107 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2023-May-29 15:30 < 00:01 Jupiter 1.92687476975432 1.92687419830458 1.92687534120449 6.25822645224369 6.18758686127889 2460094.145828168 0.385499716000528 157.057146632067 26.4154675699408 -86.9075158838885 3482761.74162907 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2063-Jan-04 23:52 00:02 Jupiter 1.82367010529247 1.82366924001582 1.82367097057399 4.66912785576186 4.5685702547209 2474559.494747711 1.64071588901784 464.502588425431 41.8557971125835 88.2574084327024 2933558.67403414 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2075-Oct-23 11:40 00:02 Jupiter 1.68243417005068 1.6824336326173 1.68243470748435 4.96237913827771 4.85986681810479 2479233.986269476 1.94332715320326 149.882497139498 25.0378442368457 87.6184729497596 3177068.32080706 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2088-Aug-03 06:35 00:03 Jupiter 1.83285962658132 1.83285798666058 1.83286126651143 4.79638689675173 4.6990492537832 2483901.774369170 2.68460527507008 364.680517287824 65.8091553370379 81.9923487909845 2734406.41920632 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2141-Jan-07 10:13 00:05 Jupiter 1.8831487328968 1.88314766458252 1.8831498012146 6.5914757303332 6.52288059037719 2503050.925803775 4.63337387706868 348.889985697211 49.0150435734079 86.5910935109435 3425584.53883498 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2153-Dec-03 13:54 00:05 Jupiter 1.96398733826774 1.96398546860847 1.96398920792757 6.20289775326242 6.13297534599756 2507764.079370346 5.30867554576778 157.221774929246 87.8581860294289 72.1474403768925 2888994.36276416 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55
2193-Jul-01 20:23 00:06 Jupiter 1.8115977623232 1.81159470985172 1.81160081585577 4.756215791658 4.65687423513218 2522219.349512503 6.25345650972303 2379.00366844665 55.0967153787164 -86.4432209406874 3023699.41122566 T 37 CATAB v2.0g-lin.ifort 2021-May-03 20:55:25 2021-May-03 20:55

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 ]
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