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JPL Small-Body Database Browser
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441091 (2007 RT221)
Classification: Main-belt Asteroid          SPK-ID: 2441091
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2202511769208974 6.9476e-07  
a 2.593127382405642 1.9231e-07 au
q 2.021988024524993 1.9495e-06 au
i 1.168923926204436 6.2732e-06 deg
node 222.482865741637 0.00057982 deg
peri 101.7393566097769 0.00060211 deg
M 313.3929986291305 8.1348e-05 deg
tp 2458797.961696885534
(2019-Nov-10.46169689)
0.00034599 TDB
period 1525.226013000331
4.18
0.00016967
4.645e-07
d
yr
n .2360305927983946 2.6257e-08 deg/d
Q 3.164266740286291 2.3467e-07 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      4341 days (11.89 yr)  
   first obs. used      2003-11-21  
   last obs. used      2015-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .52964  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:41:48  

Additional Information
 Earth MOID = 1.00939 au 
 Jupiter MOID = 2.17441 au 
 T_jup = 3.384 
[ 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 MPO342706  

441091 (2007 RT221)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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