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243159 (2007 TD74)
Classification: Jupiter Trojan          SPK-ID: 2243159
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1051117423396293 7.7846e-08  
a 5.231230249828497 1.7117e-07 au
q 4.68136652368925 4.9611e-07 au
i 35.88461958517479 7.3724e-06 deg
node 139.4968622795163 1.0294e-05 deg
peri 245.534597931211 3.9524e-05 deg
M 327.1114390431901 4.0933e-05 deg
tp 2459399.751494901335
(2021-Jul-04.25149490)
0.00049835 TDB
period 4370.228857177161
11.97
0.00021449
5.872e-07
d
yr
n .08237554868751952 4.0431e-09 deg/d
Q 5.781093975967745 1.8916e-07 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      9158 days (25.07 yr)  
   first obs. used      1995-07-03  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:44:01  

Additional Information
 Earth MOID = 3.81153 au 
 Jupiter MOID = .0649643 au 
 T_jup = 2.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457426.5 (2016-Feb-08.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039416225149773 7.7843e-08  
q 4.688536136599057 4.962e-07 au
tp 2459402.303720772757
(2021-Jul-06.80372077)
0.00050347 TDB
node 139.512334335194 1.0293e-05 deg
peri 245.5086452071675 3.9943e-05 deg
i 35.86714632888608 7.3741e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      9158 days (25.07 yr)  
   first obs. used      1995-07-03  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:44:01  

Additional Information
 Jupiter MOID = .0649643 au 
 T_jup = 2.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.059597543822011E-15 -3.711665809720373E-14 -1.870743880264574E-11 -6.653075056160919E-15 -1.007809302648504E-12 1.50049376703415E-14
q -3.711665809720373E-14 2.462155740884329E-13 1.046253631166054E-10 5.179445506857602E-14 4.487694679786809E-12 -7.105505416962484E-14
tp -1.870743880264574E-11 1.046253631166054E-10 2.534813994958785E-7 6.595567305308656E-12 1.903354644916859E-8 -2.827761747709133E-11
node -6.653075056160919E-15 5.179445506857602E-14 6.595567305308656E-12 1.059406743659068E-10 -8.612310651165953E-11 8.198295366531303E-12
peri -1.007809302648504E-12 4.487694679786809E-12 1.903354644916859E-8 -8.612310651165953E-11 1.595481786117493E-9 -8.700852191928791E-12
i 1.50049376703415E-14 -7.105505416962484E-14 -2.827761747709133E-11 8.198295366531303E-12 -8.700852191928791E-12 5.437772929241541E-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 12.6   n/a MPO418299  
diameter diameter 18.125 km 0.649 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.041   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243159 (2007 TD74)          Discovered 2007-Oct-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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