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 ]  
215281 (2001 QF121)
Classification: Main-belt Asteroid          SPK-ID: 2215281
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813872233924906 5.1543e-08  
a 2.635068689650461 1.5207e-08 au
q 2.157100896586275 1.3714e-07 au
i 14.1377456050573 5.6326e-06 deg
node 129.1838318919167 2.0125e-05 deg
peri 162.3508888618686 2.4515e-05 deg
M 162.1769904227019 1.4393e-05 deg
tp 2458296.661411152947
(2018-Jun-27.16141115)
6.0675e-05 TDB
period 1562.378801854188
4.28
1.3525e-05
3.703e-08
d
yr
n .2304178727801234 1.9946e-09 deg/d
Q 3.113036482714647 1.7965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6785 days (18.58 yr)  
   first obs. used      2001-06-28  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:21:23  

Additional Information
 Earth MOID = 1.14516 au 
 Jupiter MOID = 2.13553 au 
 T_jup = 3.332 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457345.5 (2015-Nov-19.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825962284439311 5.1408e-08  
q 2.152373612972719 1.3682e-07 au
tp 2456735.778391429508
(2014-Mar-19.27839143)
5.8466e-05 TDB
node 129.2594882202715 2.0116e-05 deg
peri 162.3429711557394 2.4464e-05 deg
i 14.14497012988883 5.6358e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6785 days (18.58 yr)  
   first obs. used      2001-06-28  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:21:23  

Additional Information
 Jupiter MOID = 2.13553 au 
 T_jup = 3.332 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.642824024591276E-15 -7.00488715596165E-15 5.090842965367849E-13 6.481271974788821E-15 1.996715840426435E-14 1.449754692653841E-15
q -7.00488715596165E-15 1.871950806389702E-14 -1.329420250786133E-12 -1.894165850690611E-14 -3.317503816064843E-14 -3.050167505165751E-15
tp 5.090842965367849E-13 -1.329420250786133E-12 3.418302594868838E-9 1.409135636337417E-13 8.250778435229736E-10 -6.890916329527427E-12
node 6.481271974788821E-15 -1.894165850690611E-14 1.409135636337417E-13 4.046722074922374E-10 -3.923497588955341E-10 1.368058998181853E-11
peri 1.996715840426435E-14 -3.317503816064843E-14 8.250778435229736E-10 -3.923497588955341E-10 5.98483174115573E-10 -1.483301837217086E-11
i 1.449754692653841E-15 -3.050167505165751E-15 -6.890916329527427E-12 1.368058998181853E-11 -1.483301837217086E-11 3.176275333983749E-11

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 16.3   n/a MPO454546  

215281 (2001 QF121)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-27 05:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin