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JPL Small-Body Database Browser
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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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09707998946607974 5.6565e-08  
a 5.240058591227579 8.0777e-08 au
q 4.731353758389565 2.8915e-07 au
i 7.958476496701828 5.2803e-06 deg
node 220.1041071079013 3.2293e-05 deg
peri 159.6780122406831 4.1226e-05 deg
M 208.392855199675 2.9316e-05 deg
tp 2460845.599577718886
(2025-Jun-19.09957772)
0.00038327 TDB
period 4381.296467614601
12.00
0.00010131
2.774e-07
d
yr
n .08216745948625616 1.8999e-09 deg/d
Q 5.748763424065593 8.8618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2326  
   data-arc span      24286 days (66.49 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48134  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:06:40  

Additional Information
 Earth MOID = 3.73558 au 
 Jupiter MOID = .214761 au 
 T_jup = 2.971 
[ 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 9.6   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. 2019-August); 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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