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 ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3195691077805103 7.151e-08  
a 2.5634668437581 1.8803e-08 au
q 1.744262031673403 1.736e-07 au
i 4.360406695019799 4.9907e-06 deg
node 1.311934078010791 5.8195e-05 deg
peri 12.73863656918607 5.9193e-05 deg
M 183.8058340522384 2.044e-05 deg
tp 2459734.217718850335
(2022-Jun-03.71771885)
9.2599e-05 TDB
period 1499.132376859928
4.10
1.6494e-05
4.516e-08
d
yr
n .2401389000443399 2.6421e-09 deg/d
Q 3.382671655842797 2.4812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      9187 days (25.15 yr)  
   first obs. used      1995-03-02  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60839  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:01:13  

Additional Information
 Earth MOID = .745327 au 
 Jupiter MOID = 2.08707 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-Nov-27 04:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin