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JPL Small-Body Database Browser
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447785 (2007 RQ221)
Classification: Outer Main-belt Asteroid          SPK-ID: 2447785
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2357518220144106 7.7539e-08  
a 3.979379619878925 1.0521e-07 au
q 3.041233624005456 3.024e-07 au
i 2.112975630526456 8.8078e-06 deg
node 213.8506948282837 0.00034856 deg
peri 177.1279108167934 0.00035163 deg
M 157.7369760063269 4.1486e-05 deg
tp 2457330.064871362509
(2015-Nov-03.56487136)
0.00030441 TDB
period 2899.489123534053
7.94
0.00011498
3.148e-07
d
yr
n .1241598035591914 4.9238e-09 deg/d
Q 4.917525615752394 1.3001e-07 au
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      3428 days (9.39 yr)  
   first obs. used      2007-09-14  
   last obs. used      2017-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67598  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 11:36:03  

Additional Information
 Earth MOID = 2.04631 au 
 Jupiter MOID = .535195 au 
 T_jup = 3.006 
[ 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 15.9   n/a MPO402791  

447785 (2007 RQ221)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-28

[ show close-approach data ]
Alternate Designations
 2007 RQ221 = 2007 TM391 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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