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452400 (2002 QY121)
Classification: Inner Main-belt Asteroid          SPK-ID: 2452400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .05067846053523786 1.1592e-07  
a 1.847844475660949 1.6221e-08 au
q 1.754198562325908 2.0663e-07 au
i 22.60290552436568 9.3925e-06 deg
node 156.3891609812641 2.0411e-05 deg
peri 312.2716582221385 8.0279e-05 deg
M 254.9597914484484 7.7715e-05 deg
tp 2459268.200773047622
(2021-Feb-22.70077305)
0.00019747 TDB
period 917.479883428128
2.51
1.2081e-05
3.308e-08
d
yr
n .3923791752848836 5.1666e-09 deg/d
Q 1.94149038899599 1.7043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      54  
   data-arc span      6132 days (16.79 yr)  
   first obs. used      2002-08-16  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59198  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:56:59  

Additional Information
 Earth MOID = .788724 au 
 Jupiter MOID = 3.08592 au 
 T_jup = 3.915 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.4   n/a MPO423585  

452400 (2002 QY121)          Discovered 2002-Aug-16 by NEAT at Palomar
Reference: Last Updated: 2016-01-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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