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3801 Thrasymedes (1985 VS)
Classification: Jupiter Trojan          SPK-ID: 2003801
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02378576879989247 5.924e-08  
a 5.324547886636302 9.6871e-08 au
q 5.197899421640815 3.7445e-07 au
i 28.49467838614672 5.2968e-06 deg
node 209.4671626460604 9.3506e-06 deg
peri 204.5638351880215 0.000118 deg
M 311.4992613449729 0.00011929 deg
tp 2459805.100336872608
(2022-Aug-13.60033687)
0.0014877 TDB
period 4487.686730345881
12.29
0.00012247
3.353e-07
d
yr
n .08021950319430018 2.1892e-09 deg/d
Q 5.451196351631789 9.9175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      24387 days (66.77 yr)  
   first obs. used      1954-04-03  
   last obs. used      2021-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:13:20  

Additional Information
 Earth MOID = 4.21157 au 
 Jupiter MOID = .00759843 au 
 T_jup = 2.755 
[ 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 11.14   n/a E2021B10  
diameter diameter 34.285 km 0.417 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 20.270 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:
[Ryan, E.L.; Sharkey, B.N.L.; Woodward, C.E. (2017) Astron. J. 153, A116.]
[Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.]
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

3801 Thrasymedes (1985 VS)          Discovered 1985-Nov-06 by SPACEWATCH at Kitt Peak
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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