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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09005983884539444 5.2361e-08  
a 3.383952339381701 2.446e-08 au
q 3.079194137036489 1.8299e-07 au
i 19.15425417639401 5.3845e-06 deg
node 4.0902623801772 1.1487e-05 deg
peri 351.1122883745377 2.5399e-05 deg
M 273.0924082638455 2.5171e-05 deg
tp 2459945.395914304223
(2022-Dec-31.89591430)
0.00016165 TDB
period 2273.708489695906
6.23
2.4652e-05
6.749e-08
d
yr
n .1583316426144618 1.7167e-09 deg/d
Q 3.688710541726912 2.6663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2338  
   data-arc span      24444 days (66.92 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3771  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:35:34  

Additional Information
 Earth MOID = 2.07603 au 
 Jupiter MOID = 1.76756 au 
 T_jup = 3.055 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457296.5 (2015-Oct-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08880283257113848 5.2335e-08  
q 3.086314988499236 1.8278e-07 au
tp 2457674.939757738655
(2016-Oct-13.43975774)
0.00015364 TDB
node 4.114386133050485 1.1489e-05 deg
peri 351.8684499707622 2.5654e-05 deg
i 19.147269577133 5.3824e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2338  
   data-arc span      24444 days (66.92 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3771  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:35:34  

Additional Information
 Jupiter MOID = 1.76756 au 
 T_jup = 3.055 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.73897319845873E-15 -9.49635615485605E-15 6.119483011071803E-13 -3.332256373671475E-15 4.982333855075889E-14 3.382998121378855E-15
q -9.49635615485605E-15 3.341027683687397E-14 -9.410198983174838E-13 8.437464087667017E-15 -8.667516381164583E-15 -1.166131969831432E-14
tp 6.119483011071803E-13 -9.410198983174838E-13 2.36047962908541E-8 -1.351862431588407E-11 3.537044953911292E-9 -1.131980536123185E-11
node -3.332256373671475E-15 8.437464087667017E-15 -1.351862431588407E-11 1.31995769983905E-10 -1.263561501928125E-10 -6.037705454910387E-12
peri 4.982333855075889E-14 -8.667516381164583E-15 3.537044953911292E-9 -1.263561501928125E-10 6.581190856343652E-10 3.960683710342673E-12
i 3.382998121378855E-15 -1.166131969831432E-14 -1.131980536123185E-11 -6.037705454910387E-12 3.960683710342673E-12 2.896996223482141E-11

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 1.83442267187299 1.83442078977591 1.8344245541417 4.58042796385588 4.47848685268298 2426901.087164487 3.17603089235547 1015.63261384714 41.7392608869968 85.0582079957484 2844519.53686595 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
1945-May-02 02:51 00:02 Jupiter 1.68568631075152 1.68568578827981 1.68568683322323 4.95374639122209 4.851251866125 2431577.618707704 2.22059910154726 176.877958939148 25.2150733884378 -89.4131389208702 3507941.11929855 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
1958-Feb-10 02:23 00:02 Jupiter 1.82573604267161 1.82573501078564 1.82573707457201 4.85960726917155 4.76318309356757 2436244.599600568 1.85241753045153 475.151689176423 42.4505773316079 86.341680156437 3352457.03062779 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2010-Jul-05 13:52 < 00:01 Jupiter 1.89466780989694 1.89466727877603 1.89466834101948 6.57587015031023 6.50753074066221 2455383.077760364 0.24770998587843 277.917297150527 24.2962340693778 88.1765303770704 3877949.98518034 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2023-May-29 15:30 < 00:01 Jupiter 1.92687479197069 1.92687423997559 1.92687534396623 6.25822647134895 6.18758688142137 2460094.145833272 0.380685123738391 156.448189201516 25.4730433310189 -86.9509013908957 3572665.70124584 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2063-Jan-04 23:52 00:02 Jupiter 1.82367006880857 1.82366921656981 1.8236709210525 4.66912775081808 4.56857014543336 2474559.494769839 1.63559751673834 464.0562668662 41.1496473430211 88.2296073745252 3009275.01750916 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2075-Oct-23 11:40 00:02 Jupiter 1.68243413976979 1.68243362125069 1.68243465828918 4.96237895805272 4.85986663221369 2479233.986285929 1.94005971058962 149.650773220206 24.0456902429658 87.5461140214736 3269541.35979669 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2088-Aug-03 06:35 00:03 Jupiter 1.83285961033176 1.83285797208229 1.83286124859082 4.79638670844929 4.69904906070829 2483901.774389000 2.68159567892715 362.382533706463 65.3479029059209 81.8581702957456 2796067.08882035 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2141-Jan-07 10:13 00:05 Jupiter 1.8831487533508 1.88314768969092 1.8831498170141 6.59147573554791 6.52288059639571 2503050.925835456 4.62727201823755 341.450744957638 48.8135005455822 86.5288689753699 3502558.9059757 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2153-Dec-03 13:54 00:05 Jupiter 1.96398737834725 1.96398552340741 1.96398923328775 6.20289764725954 6.13297524022119 2507764.079413462 5.30155147350074 155.93440708074 87.1921540763648 72.0958218273072 2931838.92823864 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35
2193-Jul-01 20:23 00:06 Jupiter 1.81159770737772 1.81159466408914 1.81160075172029 4.75621566713096 4.65687410490354 2522219.349554765 6.24539897244009 2367.82813829835 54.4978989205995 -86.4324951647409 3103900.49514474 T 40 CATAB v2.0g-lin.ifort 2021-Aug-25 09:35:45 2021-Aug-25 09:35

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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