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4348 Poulydamas (1988 RU)
Classification: Jupiter Trojan          SPK-ID: 2004348
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09707999008790108 5.273e-08  
a 5.240058591493765 7.8756e-08 au
q 4.731353755371529 2.7443e-07 au
i 7.958476936313538 5.2657e-06 deg
node 220.104090833661 2.9291e-05 deg
peri 159.6780280141596 3.8827e-05 deg
M 208.3928554445885 2.9302e-05 deg
tp 2460845.599574878817
(2025-Jun-19.09957488)
0.00038326 TDB
period 4381.296467948445
12.00
9.8773e-05
2.704e-07
d
yr
n .08216745947999521 1.8524e-09 deg/d
Q 5.748763427616002 8.6401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2588  
   data-arc span      24409 days (66.83 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:52:20  

Additional Information
 Earth MOID = 3.73558 au 
 Jupiter MOID = .214761 au 
 T_jup = 2.971 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457031.5 (2015-Jan-09.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09839901479555133 5.2849e-08  
q 4.724837204223479 2.7573e-07 au
tp 2456475.289684017641
(2013-Jul-01.78968402)
0.00031943 TDB
node 220.1190789366981 2.9298e-05 deg
peri 160.2817191239425 3.8509e-05 deg
i 7.957962355530179 5.2651e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2588  
   data-arc span      24409 days (66.83 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:52:20  

Additional Information
 Jupiter MOID = .214761 au 
 T_jup = 2.971 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.793031385604586E-15 -1.407432547719404E-14 5.615520603450152E-12 3.837181611946886E-15 3.610588642476412E-13 1.308168814909958E-16
q -1.407432547719404E-14 7.602809665379736E-14 -1.852807567216625E-11 -1.033151665237723E-14 -9.918609177717471E-13 -8.962406951226419E-16
tp 5.615520603450152E-12 -1.852807567216625E-11 1.020356979688193E-7 2.477991825100326E-11 8.004140356954902E-9 -6.367675887199193E-12
node 3.837181611946886E-15 -1.033151665237723E-14 2.477991825100326E-11 8.583672745185401E-10 -8.478742696113646E-10 -1.22729113113618E-11
peri 3.610588642476412E-13 -9.918609177717471E-13 8.004140356954902E-9 -8.478742696113646E-10 1.482960042494223E-9 1.163097978589824E-11
i 1.308168814909958E-16 -8.962406951226419E-16 -6.367675887199193E-12 -1.22729113113618E-11 1.163097978589824E-11 2.772153036430849E-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 9.6   n/a MPO452226  
diameter diameter 82.032 km 0.626 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 9.908 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bull. 42, 216-224.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 265-270.]
[Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 252-257.]
[Stephens, R.D.; Warner, B.D. (2018) Minor Planet Bull. 45, 343-347.]
geometric albedo albedo 0.033   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4348 Poulydamas (1988 RU)          Discovered 1988-Sep-11 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 RU = 1977 SP1 = 1977 TV4 = 1983 GJ = 1988 PK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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