Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
1686 De Sitter (1935 SR1)
Classification: Main-belt Asteroid          SPK-ID: 2001686
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631900978356027 4.2416e-08  
a 3.159491711302021 1.7417e-08 au
q 2.643893949823869 1.3356e-07 au
i .6221083150461546 4.8242e-06 deg
node 6.508010002424185 0.00042572 deg
peri 294.82325969 0.00042574 deg
M 152.6129663487251 1.5486e-05 deg
tp 2456530.912695845867
(2013-Aug-26.41269585)
8.5115e-05 JED
period 2051.276749186279
5.62
1.6961e-05
4.644e-08
d
yr
n .1755004536286039 1.4512e-09 deg/d
Q 3.675089472780174 2.0259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2044  
   data-arc span      30200 days (82.68 yr)  
   first obs. used      1933-04-14  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50781  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:40:07  

Additional Information
 Earth MOID = 1.62662 au 
 Jupiter MOID = 1.54516 au 
 T_jup = 3.184 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1 mag n/a MPO332831  

1686 De Sitter (1935 SR1)          Discovered 1935-Sep-28 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 SR1 = 1929 RK1 = 1933 GF = 1951 NG = 1952 UO1 = 1956 GG = 1958 VA = 1963 RD = 1967 GK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-12 03:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin