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215281 (2001 QF121)
Classification: Main-belt Asteroid          SPK-ID: 2215281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813426244164421 5.0337e-08  
a 2.635155091131999 1.5104e-08 au
q 2.157289151161773 1.3434e-07 au
i 14.13820122096759 5.6325e-06 deg
node 129.1831022775377 1.9219e-05 deg
peri 162.3924131484872 2.3468e-05 deg
M 208.200991454888 1.4376e-05 deg
tp 2459859.331160967389
(2022-Oct-06.83116097)
6.4802e-05 TDB
period 1562.455645932461
4.28
1.3434e-05
3.678e-08
d
yr
n .2304065404590444 1.981e-09 deg/d
Q 3.113021031102224 1.7843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      2001-06-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:57:34  

Additional Information
 Earth MOID = 1.14337 au 
 Jupiter MOID = 2.13516 au 
 T_jup = 3.332 
[ 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 16.3   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 ]
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