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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216792046984799 1.7211e-08  
a 3.185259666084394 1.7888e-08 au
q 2.797679803157099 6.0453e-08 au
i 18.3959979705325 4.2759e-07 deg
node 252.4545112106967 1.4503e-06 deg
peri 290.5606716681056 9.7728e-06 deg
M 242.549023110936 1.2624e-05 deg
tp 2460073.938419177996
(2023-May-09.43841918)
7.4862e-05 TDB
period 2076.422328393476
5.68
1.7491e-05
4.789e-08
d
yr
n .1733751342765281 1.4604e-09 deg/d
Q 3.572839529011689 2.0064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3079  
   data-arc span      24053 days (65.85 yr)  
   first obs. used      1955-04-26  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38227  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:20:33  

Additional Information
 Earth MOID = 1.85806 au 
 Jupiter MOID = 1.67952 au 
 T_jup = 3.107 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457475.5 (2016-Mar-28.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1202524729039937 1.7305e-08  
q 2.803547170460878 6.098e-08 au
tp 2458003.858401788724
(2017-Sep-07.35840179)
7.0662e-05 TDB
node 252.4975580084925 1.4541e-06 deg
peri 291.776406374392 9.8647e-06 deg
i 18.37879963291135 4.2828e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3079  
   data-arc span      24053 days (65.85 yr)  
   first obs. used      1955-04-26  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38227  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:20:33  

Additional Information
 Jupiter MOID = 1.67952 au 
 T_jup = 3.107 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.994543130523674E-16 -1.020561439759836E-15 -6.1426223761083E-13 -1.415304348134756E-14 -5.602748702888722E-14 4.331316772598756E-15
q -1.020561439759836E-15 3.71850915487277E-15 2.138937385519141E-12 4.485977049938961E-14 1.86374480997843E-13 -1.335537909621627E-14
tp -6.1426223761083E-13 2.138937385519141E-12 4.993085001049495E-9 1.747995656550064E-11 6.80837108683479E-10 -2.535317939695035E-12
node -1.415304348134756E-14 4.485977049938961E-14 1.747995656550064E-11 2.11446413139421E-12 3.541503596016336E-13 -3.914258459899186E-13
peri -5.602748702888722E-14 1.86374480997843E-13 6.80837108683479E-10 3.541503596016336E-13 9.731197779500677E-11 2.242495315396524E-13
i 4.331316772598756E-15 -1.335537909621627E-14 -2.535317939695035E-12 -3.914258459899186E-13 2.242495315396524E-13 1.834276136220136E-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 1.78738734795675 1.78738657888951 1.78738811704197 5.72401726487687 5.64062021613811 2430195.454825188 1.94387292455855 296.733505900832 9.25066708636185 83.0419352118395 14737011.891999 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22
1952-Sep-03 22:48 00:02 Jupiter 1.76196860333731 1.76196814151477 1.76196906517237 5.01121513819893 4.91434909079319 2434259.450226120 1.68480110633815 251.23768498431 7.60960441221475 -84.3909627380917 27436742.5185972 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22
1963-Aug-28 00:05 00:02 Jupiter 1.94694390466348 1.94694311216415 1.94694469716358 3.29469160111638 3.15988734872765 2438269.503436093 1.9767407272859 81.7164070781525 25.2398300484905 -36.8497576336452 1935290.64471115 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22
2084-Jun-02 21:14 00:01 Jupiter 1.94070790449095 1.94070676260233 1.94070904638343 5.95767991833258 5.8839654525159 2482379.384747576 1.4666946567227 153.207710056456 14.4519669319605 69.0402745715853 10423529.0336989 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22
2095-Jul-18 03:45 00:02 Jupiter 1.72537584881791 1.72537545116315 1.7253762464865 5.54152872307565 5.45221967919191 2486441.656274616 1.65807356854294 271.939987313109 8.12894951709216 86.4663585391531 17393485.9505552 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22
2106-Sep-02 10:38 00:02 Jupiter 1.77145322133739 1.77145231970347 1.77145412299015 4.79912446965707 4.69843519100736 2490504.943317003 2.15747459567847 299.166317705772 8.09480355103398 -80.5903519003624 33636766.7104825 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:35 2021-Apr-12 13:22

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