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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216208439804426 3.0528e-08  
a 5.264683578023555 7.9766e-08 au
q 4.624388317974354 2.0861e-07 au
i 21.69377347067642 1.8691e-06 deg
node 54.96657507476066 1.2485e-06 deg
peri 356.5745498215541 9.2647e-06 deg
M 336.5045614679689 1.1299e-05 deg
tp 2459488.463797709867
(2021-Sep-30.96379771)
0.00013949 TDB
period 4412.216738760772
12.08
0.00010028
2.746e-07
d
yr
n .08159164005644713 1.8543e-09 deg/d
Q 5.904978838072756 8.9468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1998  
   data-arc span      23658 days (64.77 yr)  
   first obs. used      1956-05-13  
   last obs. used      2021-02-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39628  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 16:05:19  

Additional Information
 Earth MOID = 3.63501 au 
 Jupiter MOID = .381586 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 9.29   n/a E2020-QM5 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. 2020-October); 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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