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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
109941 (2001 SJ42)
Classification: Main-belt Asteroid          SPK-ID: 2109941
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0667694240890384 5.1987e-08  
a 3.04144451684236 3.0178e-08 au
q 2.838369018054032 1.5801e-07 au
i 2.976831459878357 5.1982e-06 deg
node 77.93987129404854 0.0001282 deg
peri 222.1749339608858 0.00013697 deg
M 171.0360086678585 5.0446e-05 deg
tp 2457680.043377431235
(2016-Oct-18.54337743)
0.00026801 TDB
period 1937.395445003893
5.30
2.8835e-05
7.895e-08
d
yr
n .1858164789890258 2.7655e-09 deg/d
Q 3.244520015630688 3.2193e-08 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      6328 days (17.33 yr)  
   first obs. used      2001-09-11  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63742  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:32:25  

Additional Information
 Earth MOID = 1.82287 au 
 Jupiter MOID = 1.89499 au 
 T_jup = 3.234 
[ 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 15.0   n/a MPO257515  

109941 (2001 SJ42)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 SJ42 = 2003 AN24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-16 08:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin