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JPL Small-Body Database Browser
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441526 (2008 SQ221)
Classification: Main-belt Asteroid          SPK-ID: 2441526
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1835888101200952 9.7801e-08  
a 2.337739722571719 2.0508e-08 au
q 1.908556868534296 2.3542e-07 au
i 2.274623033500729 1.3759e-05 deg
node 345.2198844228271 0.00017191 deg
peri 45.7376751211403 0.00017709 deg
M 324.3299614281599 4.2593e-05 deg
tp 2458729.858133231471
(2019-Sep-03.35813323)
0.00015546 TDB
period 1305.547451807178
3.57
1.718e-05
4.704e-08
d
yr
n .2757463924437807 3.6286e-09 deg/d
Q 2.766922576609143 2.4273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      107  
   data-arc span      6589 days (18.04 yr)  
   first obs. used      2001-10-14  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:57:17  

Additional Information
 Earth MOID = .914167 au 
 Jupiter MOID = 2.67554 au 
 T_jup = 3.543 
[ 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 18.3   n/a MPO353526  

441526 (2008 SQ221)          Discovered 2008-Sep-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2008 SQ221 = 2005 YY240 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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