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JPL Small-Body Database Browser
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172255 (2002 SQ9)
Classification: Main-belt Asteroid          SPK-ID: 2172255
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 .06314281908364462 7.0474e-08  
a 2.713847335853165 2.77e-08 au
q 2.542487364504757 1.99e-07 au
i 5.18764755918128 7.1169e-06 deg
node 24.61275451586847 6.3335e-05 deg
peri 327.8079449805587 7.527e-05 deg
M 359.579841651449 4.3241e-05 deg
tp 2459002.405842658179
(2020-Jun-01.90584266)
0.00019615 TDB
period 1632.963760712288
4.47
2.5001e-05
6.845e-08
d
yr
n .2204580460762768 3.3753e-09 deg/d
Q 2.885207307201572 2.9449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      5676 days (15.54 yr)  
   first obs. used      2002-09-27  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52249  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 17:01:25  

Additional Information
 Earth MOID = 1.5391 au 
 Jupiter MOID = 2.39176 au 
 T_jup = 3.353 
[ 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 16.1   n/a MPO436856  

172255 (2002 SQ9)          Discovered 2002-Sep-27 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 SQ9 = 2005 GJ170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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