Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1437 Diomedes (1937 PB)
Classification: Jupiter Trojan          SPK-ID: 2001437
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 73 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04414555369217221 4.7615e-08  
a 5.207374157864838 4.9916e-08 au
q 4.977491742383586 2.7674e-07 au
i 20.4757550743762 3.1346e-06 deg
node 315.7779616719002 1.3558e-05 deg
peri 128.9855928168552 6.1239e-05 deg
M 319.4954660789741 5.6962e-05 deg
tp 2459688.846118935760
(2022-Apr-19.34611894)
0.00068519 TDB
period 4340.368492071789
11.88
6.2407e-05
1.709e-07
d
yr
n .08294226645907689 1.1926e-09 deg/d
Q 5.43725657334609 5.2119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3012  
   data-arc span      30487 days (83.47 yr)  
   first obs. used      1937-08-03  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:55:22  

Additional Information
 Earth MOID = 4.02687 au 
 Jupiter MOID = .279658 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 8.27   n/a E2021B10 IRAS observations used: 17
diameter diameter 117.786 km 1.179 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 24.49 h n/a LCDB (Rev. 2020-October); 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] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-02 09:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin