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1437 Diomedes (1937 PB)
Classification: Jupiter Trojan          SPK-ID: 2001437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04349286319615434 4.9358e-08  
a 5.201523465725562 5.9295e-08 au
q 4.975294317219173 2.7958e-07 au
i 20.47918013141843 7.1438e-06 deg
node 315.791295516553 1.3865e-05 deg
peri 130.1293939331129 8.2557e-05 deg
M 268.4982160505983 8.1791e-05 deg
tp 2459701.839791250592
0.00098922 TDB
period 4333.055681946686
n .08308224643867604 1.4206e-09 deg/d
Q 5.427752614231951 6.1873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2189  
   data-arc span      30073 days (82.34 yr)  
   first obs. used      1937-08-03  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38962  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:59:52  

Additional Information
 Earth MOID = 4.02349 au 
 Jupiter MOID = .277517 au 
 T_jup = 2.872 
[ 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 8.2   n/a MPO502167 IRAS observations used: 17
diameter diameter 117.786 km 1.179 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
rotation period rot_per 24.49 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Sato, I.; Sarounova, L.; Fukushima, H. (2000) Icarus 145, 25-32.]
[Stephens, R.D. (2009) Minor Planet Bull. 36, 59-62.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.061   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
B-V BV 0.700   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.49, mean=4.62, max.=5.75) deg.
U-B UB 0.250   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.49, mean=4.62, max.=5.75) deg.
Tholen spectral type spec_T DP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1437 Diomedes (1937 PB)          Discovered 1937-Aug-03 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1937 PB = 1931 DN = 1936 PQ = 1971 RD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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