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4086 Podalirius (1985 VK2)
Classification: Jupiter Trojan          SPK-ID: 2004086
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1213133029157495 6.268e-08  
a 5.263201927007578 1.0963e-07 au
q 4.624705517329751 3.8496e-07 au
i 21.69537180118216 6.3744e-06 deg
node 54.96236285614635 1.4801e-05 deg
peri 356.5701787155815 2.851e-05 deg
M 320.1696447420594 2.8687e-05 deg
tp 2459488.461047259231
(2021-Sep-30.96104726)
0.00035895 TDB
period 4410.354260606357
12.07
0.00013779
3.772e-07
d
yr
n .08162609593872067 2.5503e-09 deg/d
Q 5.901698336685404 1.2293e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1409  
   data-arc span      23261 days (63.69 yr)  
   first obs. used      1956-05-13  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45469  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:03:47  

Additional Information
 Earth MOID = 3.63611 au 
 Jupiter MOID = .382347 au 
 T_jup = 2.844 
[ 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 9.2   n/a MPO458871 IRAS observations used: 17
diameter diameter 85.495 km 0.408 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 10.43 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.050   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4086 Podalirius (1985 VK2)          Discovered 1985-Nov-09 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 VK2 = 1951 XE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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