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 ]  
109138 (2001 QF55)
Classification: Main-belt Asteroid          SPK-ID: 2109138
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3192881943354104 7.5519e-08  
a 2.564237581285961 1.922e-08 au
q 1.745506794110167 1.8359e-07 au
i 4.359256443422741 5.1742e-06 deg
node 1.315496824935278 6.5982e-05 deg
peri 12.77985787308284 6.6878e-05 deg
M 87.71737268978104 1.9481e-05 deg
tp 2458235.057601489684
(2018-Apr-26.55760149)		 7.7494e-05 TDB
period 1499.808526287978
4.11		 1.6863e-05
4.617e-08		 d
yr
n .2400306397050555 2.6987e-09 deg/d
Q 3.382968368461756 2.5357e-08 au
   Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      8740 days (23.93 yr)  
   first obs. used      1995-03-02  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61431  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:12:53  

Additional Information
 Earth MOID = .745779 au 
 Jupiter MOID = 2.08352 au 
 T_jup = 3.356 
[ 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 16.0   n/a MPO459509  

109138 (2001 QF55)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QF55 = 1995 EN9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 11:15 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin