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 ]  
120901 (1998 SD26)
Classification: Main-belt Asteroid          SPK-ID: 2120901
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1666975149531669 3.937e-08  
a 2.232097565599103 8.5555e-09 au
q 1.860012448280719 8.6881e-08 au
i 4.920016077079546 4.0351e-06 deg
node 106.8490418867727 5.2816e-05 deg
peri 248.2894148133221 5.4211e-05 deg
M 250.941464162743 1.3608e-05 deg
tp 2459569.499136277779
(2021-Dec-20.99913628)
4.6768e-05 TDB
period 1218.058614487828
3.33
7.0032e-06
1.917e-08
d
yr
n .2955522794372041 1.6993e-09 deg/d
Q 2.604182682917486 9.9817e-09 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      7911 days (21.66 yr)  
   first obs. used      1998-09-22  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54083  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:54  

Additional Information
 Earth MOID = .860034 au 
 Jupiter MOID = 2.83425 au 
 T_jup = 3.618 
[ 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 16.26   n/a E2021B55  

120901 (1998 SD26)          Discovered 1998-Sep-22 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 SD26 = 2001 OW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-07 06:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin