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JPL Small-Body Database Browser
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74983 (1999 TP242)
Classification: Main-belt Asteroid          SPK-ID: 2074983
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06826171095928214 3.2744e-08  
a 2.222155305543925 8.2019e-09 au
q 2.07046718237025 7.3706e-08 au
i 7.014007593864768 4.4846e-06 deg
node 91.22738204522918 2.7162e-05 deg
peri 309.9853066293865 4.7172e-05 deg
M 76.30246467664539 3.5739e-05 deg
tp 2458744.053896251458
(2019-Sep-17.55389625)
0.00012047 TDB
period 1209.929426797828
3.31
6.6987e-06
1.834e-08
d
yr
n .2975380150499917 1.6473e-09 deg/d
Q 2.3738434287176 8.7617e-09 au
  Orbit Determination Parameters
   # obs. used (total)      872  
   data-arc span      7418 days (20.31 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:52:59  

Additional Information
 Earth MOID = 1.08747 au 
 Jupiter MOID = 2.86414 au 
 T_jup = 3.636 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457045.5 (2015-Jan-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0683178984837737 3.2525e-08  
q 2.070082560428276 7.3115e-08 au
tp 2457531.814661162257
(2016-May-23.31466116)
0.00012245 TDB
node 91.26946796905885 2.7185e-05 deg
peri 309.313325982096 4.722e-05 deg
i 7.011690228715546 4.4826e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      872  
   data-arc span      7418 days (20.31 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:52:59  

Additional Information
 Jupiter MOID = 2.86414 au 
 T_jup = 3.636 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.057867739820157E-15 -2.365254465335735E-15 1.361325915676868E-12 -1.582331573293089E-14 4.43938931337928E-13 -9.595063183308677E-16
q -2.365254465335735E-15 5.345852198776214E-15 -3.298737717546192E-12 3.581656632779367E-14 -1.076939272104158E-12 2.241611367356783E-15
tp 1.361325915676868E-12 -3.298737717546192E-12 1.499291658905862E-8 -7.096206686380682E-11 4.734607100005169E-9 -2.622409845774006E-12
node -1.582331573293089E-14 3.581656632779367E-14 -7.096206686380682E-11 7.390373726365758E-10 -7.550684482300419E-10 1.111317855749903E-11
peri 4.43938931337928E-13 -1.076939272104158E-12 4.734607100005169E-9 -7.550684482300419E-10 2.229756867584636E-9 -1.185481475200332E-11
i -9.595063183308677E-16 2.241611367356783E-15 -2.622409845774006E-12 1.111317855749903E-11 -1.185481475200332E-11 2.00937550961547E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO453162  

74983 (1999 TP242)          Discovered 1999-Oct-04 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TP242 = 2001 FQ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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