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 ]  
5450 Sokrates (2780 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2005450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120609254417255 1.2167e-08  
a 2.817717984811678 1.136e-08 au
q 2.477875119505451 3.6199e-08 au
i 5.237429811156401 3.6224e-07 deg
node 145.11827210562 6.8311e-06 deg
peri 319.4649685016578 1.0887e-05 deg
M 195.2043597195371 1.1006e-05 deg
tp 2459991.338730354893
(2023-Feb-15.83873035)
5.5379e-05 TDB
period 1727.60603644145
4.73
1.0447e-05
2.86e-08
d
yr
n .2083808417001909 1.2601e-09 deg/d
Q 3.157560850117904 1.273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2401  
   data-arc span      25618 days (70.14 yr)  
   first obs. used      1950-08-12  
   last obs. used      2020-10-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42949  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:33:58  

Additional Information
 Earth MOID = 1.49734 au 
 Jupiter MOID = 1.96602 au 
 T_jup = 3.302 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.43   n/a E2021B10  
diameter diameter 20.526 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.9822 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:
[Clark, M. (2014) Minor Planet Bull. 41, 178-183.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5450 Sokrates (2780 P-L)          Discovered 1960-Sep-24 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 2780 P-L = 1950 PH = 1953 FJ1 = 1962 BC = 1967 EP = 1974 SG3 = 1977 JW = 1978 PX = 1988 RW11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 12:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin