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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04508537064980416 4.7233e-08  
a 5.189474128044951 7.2684e-08 AU
q 4.955504763504476 2.4924e-07 AU
i 20.49028750877151 7.0887e-06 deg
node 315.8018456616873 1.6062e-05 deg
peri 131.2574263151639 7.6456e-05 deg
M 134.1498614820938 7.4305e-05 deg
tp 2455391.443917550649
(2010-Jul-13.94391755)
0.00089279 JED
period 4318.008108857312
11.82
9.0717e-05
2.484e-07
d
yr
n .08337177488424585 1.7516e-09 deg/d
Q 5.423443492585427 7.5961e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1267  
   data-arc span      28101 days (76.94 yr)  
   first obs. used      1937-08-03  
   last obs. used      2014-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48325  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:51:30  

Additional Information
 Earth MOID = 4.00244 AU 
 T_jup = 2.872 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.30 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
diameter diameter 164.31 km 4.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 24.49 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Sato, I.; Sarounova, L.; Fukushima, H. (2000) Icarus 145, 25-32.]
[Stephens, R.D. (2009) Minor Planet Bul. 36, 59-62.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.0313   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV .700 mag .014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=3.49, mean=4.62, max.=5.75) deg.
U-B UB .250 mag .040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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