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JPL Small-Body Database Browser
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39474 (1978 VC7)
Classification: Jupiter Trojan          SPK-ID: 2039474
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08925037897300367 5.8422e-08  
a 5.267042981319728 1.3801e-07 au
q 4.796957399169843 3.8281e-07 au
i 13.05161103611771 6.2334e-06 deg
node 71.62548874788077 2.8839e-05 deg
peri 219.7936557480198 5.3192e-05 deg
M 297.4406855560916 4.9585e-05 deg
tp 2459767.752302775840
(2022-Jul-07.25230278)
0.0006196 TDB
period 4415.183117886575
12.09
0.00017353
4.751e-07
d
yr
n .08153682200441144 3.2046e-09 deg/d
Q 5.737128563469613 1.5032e-07 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      24306 days (66.55 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:43:42  

Additional Information
 Earth MOID = 3.79277 au 
 Jupiter MOID = .437357 au 
 T_jup = 2.940 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457010.5 (2014-Dec-19.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08749991616031413 5.8326e-08  
q 4.812295901793225 3.8333e-07 au
tp 2455355.920125082196
(2010-Jun-08.42012508)
0.00058372 TDB
node 71.61606825330696 2.8832e-05 deg
peri 220.2258028563164 5.3918e-05 deg
i 13.0484459770279 6.2316e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      24306 days (66.55 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:43:42  

Additional Information
 Jupiter MOID = .437357 au 
 T_jup = 2.940 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.401934842142274E-15 -2.134508372305257E-14 -3.348870091966037E-12 -1.305716049139233E-14 -3.572131897258851E-13 -5.545082545595114E-16
q -2.134508372305257E-14 1.469438655821031E-13 2.73920698017501E-11 9.999283923388063E-14 3.246630596451412E-12 1.05656443365782E-14
tp -3.348870091966037E-12 2.73920698017501E-11 3.407238084763771E-7 7.879117288788941E-11 2.659385819820794E-8 3.136462701484433E-11
node -1.305716049139233E-14 9.999283923388063E-14 7.879117288788941E-11 8.312673957179264E-10 -8.022302048342204E-10 -2.46880871946853E-11
peri -3.572131897258851E-13 3.246630596451412E-12 2.659385819820794E-8 -8.022302048342204E-10 2.907111636063235E-9 2.675419829532358E-11
i -5.545082545595114E-16 1.05656443365782E-14 3.136462701484433E-11 -2.46880871946853E-11 2.675419829532358E-11 3.883285235124339E-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 11.7   n/a MPO319561  
diameter diameter 26.068 km 0.552 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.060   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

39474 (1978 VC7)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1978 VC7 = 1978 WA14 = 2000 SM339 = 2001 WJ25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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