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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08925037440556231 5.9922e-08  
a 5.26704296249437 1.5387e-07 au
q 4.796957406081566 3.829e-07 au
i 13.05161021716698 6.4094e-06 deg
node 71.62548215211557 3.0704e-05 deg
peri 219.7936550479588 5.9842e-05 deg
M 297.4406945561322 5.8959e-05 deg
tp 2459767.752188282318
(2022-Jul-07.25218828)
0.00074081 TDB
period 4415.183094215589
12.09
0.00019347
5.297e-07
d
yr
n .08153682244155229 3.5729e-09 deg/d
Q 5.737128518907175 1.676e-07 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      24212 days (66.29 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:27:34  

Additional Information
 Earth MOID = 3.79277 au 
 Jupiter MOID = .437357 au 
 T_jup = 2.940 
[ show covariance matrix ]

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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