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2104 Toronto (1963 PD)
Classification: Main-belt Asteroid          SPK-ID: 2002104
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216792047189765 1.721e-08  
a 3.18525966605096 1.7868e-08 au
q 2.797679803062446 6.0441e-08 au
i 18.39599797085561 4.2757e-07 deg
node 252.4545112101692 1.4502e-06 deg
peri 290.5606716916471 9.7726e-06 deg
M 242.5490230922408 1.2622e-05 deg
tp 2460073.938419275161
(2023-May-09.43841927)
7.485e-05 TDB
period 2076.422328360783
5.68
1.7472e-05
4.784e-08
d
yr
n .1733751342792578 1.4588e-09 deg/d
Q 3.572839529039474 2.0042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3113  
   data-arc span      24189 days (66.23 yr)  
   first obs. used      1955-04-26  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:21:27  

Additional Information
 Earth MOID = 1.85806 au 
 Jupiter MOID = 1.67952 au 
 T_jup = 3.107 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457482.5 (2016-Apr-04.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1202552760846459 1.7304e-08  
q 2.80352835396641 6.0965e-08 au
tp 2458003.863746551762
(2017-Sep-07.36374655)
7.0659e-05 TDB
node 252.4975734323258 1.454e-06 deg
peri 291.7780548271501 9.8644e-06 deg
i 18.37883794620873 4.2827e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3113  
   data-arc span      24189 days (66.23 yr)  
   first obs. used      1955-04-26  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:21:27  

Additional Information
 Jupiter MOID = 1.67952 au 
 T_jup = 3.107 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.994138788979478E-16 -1.020314103103833E-15 -6.141805441361041E-13 -1.415415257645687E-14 -5.60250502184134E-14 4.331416731300615E-15
q -1.020314103103833E-15 3.716762131828919E-15 2.138250081338766E-12 4.48739700491732E-14 1.863406271855468E-13 -1.335740923595594E-14
tp -6.141805441361041E-13 2.138250081338766E-12 4.992638584120367E-9 1.74885326951351E-11 6.807954395213724E-10 -2.537123378070494E-12
node -1.415415257645687E-14 4.48739700491732E-14 1.74885326951351E-11 2.114182901653963E-12 3.548871377374522E-13 -3.913788841764615E-13
peri -5.60250502184134E-14 1.863406271855468E-13 6.807954395213724E-10 3.548871377374522E-13 9.730676772726238E-11 2.240547131129596E-13
i 4.331416731300615E-15 -1.335740923595594E-14 -2.537123378070494E-12 -3.913788841764615E-13 2.240547131129596E-13 1.834180896012421E-13

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 9.94   n/a MPCxxxxx  
diameter diameter 35.874 km 0.503 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.97 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Oey, J. (2006) Minor Planet Bull. 33, 96-99.]
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.104   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2104 Toronto (1963 PD)          Discovered 1963-Aug-15 by Kamper, K. W. at Tautenburg
on plates taken by S. van den Bergh.
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
1941-Jul-19 22:55 00:02 Jupiter 1.78738734791743 1.78738657966157 1.78738811619127 5.72401732318233 5.64062027530378 2430195.454831611 1.94172150740963 296.407731051489 9.25034507013709 83.0420977597315 14737416.3761775 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23
1952-Sep-03 22:48 00:02 Jupiter 1.76196860316727 1.76196814179984 1.76196906454712 5.01121503809773 4.91434898870946 2434259.450219194 1.68294250072184 250.962652761387 7.60923298099205 -84.3909766155783 27437217.2045473 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23
1963-Aug-28 00:05 00:02 Jupiter 1.94694390431539 1.94694311266923 1.94694469596234 3.29469187539393 3.15988763468157 2438269.503453041 1.97457833140585 81.6292371151836 25.2384642819096 -36.8555447682549 1935892.58239518 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23
2084-Jun-02 21:14 00:01 Jupiter 1.94070790442269 1.94070676381419 1.94070904503506 5.95767989491467 5.883965428802 2482379.384742275 1.46507580536139 153.03977425339 14.4511326256545 69.0422677524512 10424242.1923292 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23
2095-Jul-18 03:45 00:02 Jupiter 1.72537584855371 1.72537545128703 1.72537624583422 5.54152865555937 5.45221961055591 2486441.656267392 1.65624380665813 271.637014748331 8.12858613709004 86.4665769234269 17394125.407869 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23
2106-Sep-02 10:38 00:02 Jupiter 1.77145322133277 1.77145232069392 1.77145412199045 4.79912439958203 4.69843511943033 2490504.943311763 2.15508573742135 298.833488732965 8.0944005998674 -80.5905658063254 33637027.5915312 T 46 CATAB v2.0g-lin.ifort 2021-Aug-25 08:22:57 2021-Aug-25 08:23

Alternate Designations
 1963 PD = 1955 HW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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