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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09005983826221781 5.2921e-08  
a 3.383952339231334 2.4499e-08 au
q 3.079194138873106 1.8466e-07 au
i 19.15425431023647 5.426e-06 deg
node 4.090262288706162 1.1493e-05 deg
peri 351.112288352664 2.5414e-05 deg
M 273.0924084281969 2.5216e-05 deg
tp 2459945.395913229618
(2022-Dec-31.89591323)
0.00016195 TDB
period 2273.708489544357
6.23
2.4692e-05
6.76e-08
d
yr
n .1583316426250151 1.7194e-09 deg/d
Q 3.688710539589561 2.6705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2315  
   data-arc span      24402 days (66.81 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37841  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:24:36  

Additional Information
 Earth MOID = 2.07603 au 
 Jupiter MOID = 1.76756 au 
 T_jup = 3.055 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457285.5 (2015-Sep-20.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08880312333748226 5.2896e-08  
q 3.086299447905684 1.8445e-07 au
tp 2457674.957116747566
(2016-Oct-13.45711675)
0.00015385 TDB
node 4.114657050364277 1.1495e-05 deg
peri 351.8716358214671 2.5667e-05 deg
i 19.14725106959945 5.4238e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2315  
   data-arc span      24402 days (66.81 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37841  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:24:36  

Additional Information
 Jupiter MOID = 1.76756 au 
 T_jup = 3.055 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.798024733172586E-15 -9.686237812540228E-15 6.723801820725538E-13 -3.499481066089652E-15 5.585082700365146E-14 3.350853007828051E-15
q -9.686237812540228E-15 3.402083729250741E-14 -1.135213427139446E-12 9.014944363495107E-15 -2.806250870693141E-14 -1.161828806978614E-14
tp 6.723801820725538E-13 -1.135213427139446E-12 2.36685054843331E-8 -1.323132400778006E-11 3.54307813634218E-9 -1.218938011712092E-11
node -3.499481066089652E-15 9.014944363495107E-15 -1.323132400778006E-11 1.32133333435402E-10 -1.264352562674603E-10 -6.282312954792963E-12
peri 5.585082700365146E-14 -2.806250870693141E-14 3.54307813634218E-9 -1.264352562674603E-10 6.587762587244411E-10 4.064823984824315E-12
i 3.350853007828051E-15 -1.161828806978614E-14 -1.218938011712092E-11 -6.282312954792963E-12 4.064823984824315E-12 2.941775482804934E-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 1.83442267469744 1.8344207922159 1.83442455735052 4.58042805502589 4.47848694608698 2426901.087172062 3.17633016069961 1016.61082404289 41.9663322468094 85.0683993214 2822162.98169843 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
1945-May-02 02:51 00:02 Jupiter 1.68568631292631 1.68568578477889 1.68568684107374 4.95374643665759 4.85125191265407 2431577.618713849 2.22081611162017 177.150619167245 25.4941318796528 -89.4520159531245 3473520.8593654 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
1958-Feb-10 02:23 00:02 Jupiter 1.82573604631904 1.82573501120827 1.82573708144423 4.85960730486206 4.76318313017517 2436244.599599660 1.85278418436704 477.21871760277 42.6121002446835 86.3550810391952 3321849.85273343 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2010-Jul-05 13:52 < 00:01 Jupiter 1.89466780817137 1.89466727269272 1.89466834365164 6.57587019477383 6.50753078553018 2455383.077769555 0.248257903441994 279.41272548285 24.4808321979865 88.1636489067213 3845117.70731745 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2023-May-29 15:30 < 00:01 Jupiter 1.92687479134086 1.92687423374175 1.9268753489404 6.25822643291174 6.18758684252213 2460094.145838923 0.382112983195326 156.567964399425 25.7485778101669 -86.9415952536829 3544696.1246881 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2063-Jan-04 23:52 00:02 Jupiter 1.82367007250227 1.82366921643998 1.82367092856963 4.66912770746312 4.56857010133003 2474559.494757944 1.63701711184651 464.25846635575 41.3504598569891 88.2367907455536 2985246.33135012 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2075-Oct-23 11:40 00:02 Jupiter 1.68243414186928 1.6824336178019 1.68243466593696 4.96237899280208 4.85986666782531 2479233.986285694 1.94095690268791 149.689409201093 24.335699391691 87.5657923436275 3240238.86548595 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2088-Aug-03 06:35 00:03 Jupiter 1.83285961270221 1.83285797398484 1.83286125142906 4.79638672875005 4.69904908155677 2483901.774389705 2.68242902905122 362.991105585155 65.4653513043713 81.8926233833632 2776275.93708202 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2141-Jan-07 10:13 00:05 Jupiter 1.88314875201338 1.88314768698097 1.8831498170491 6.59147575979078 6.52288062084454 2503050.925835476 4.62893400194055 343.612811487468 48.872704363223 86.5470718131752 3479241.39191872 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2153-Dec-03 13:54 00:05 Jupiter 1.9639873774963 1.96398551844645 1.96398923654682 6.20289767946051 6.13297527275882 2507764.079410654 5.30351056012637 156.276996465332 87.3613200254385 72.0919517073984 2918465.05791407 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24
2193-Jul-01 20:23 00:06 Jupiter 1.81159771120208 1.81159466533926 1.81160075812063 4.75621571994524 4.65687415905642 2522219.349556572 6.24757704830656 2371.04904767021 54.7182184620037 -86.4361412116067 3077875.56674619 T 38 CATAB v2.0g-lin.ifort 2021-Jul-07 22:24:53 2021-Jul-07 22:24

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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