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 ]  
100026 (1990 ST9)
Classification: Main-belt Asteroid          SPK-ID: 2100026
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1852031714491182 4.1112e-08  
a 2.423541869249866 8.0181e-09 au
q 1.974694228925066 1.0104e-07 au
i 3.077975009133495 3.1561e-06 deg
node 49.40116623422372 8.3565e-05 deg
peri 268.0941013457495 8.421e-05 deg
M 33.19066339889674 8.6906e-06 deg
tp 2459073.446202668135
(2020-Aug-11.94620267)		 3.3452e-05 TDB
period 1378.07932579593
3.77		 6.8389e-06
1.872e-08		 d
yr
n .2612331476579381 1.2964e-09 deg/d
Q 2.872389509574665 9.5031e-09 au
   Orbit Determination Parameters
   # obs. used (total)      951  
   data-arc span      11078 days (30.33 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:24:06  

Additional Information
 Earth MOID = .962349 au 
 Jupiter MOID = 2.42712 au 
 T_jup = 3.486 
[ 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 15.77   n/a E2021B55  

100026 (1990 ST9)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1990 ST9 = 2004 EN32 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-02 21:36 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin