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109479 (2001 QR221)
Classification: Main-belt Asteroid          SPK-ID: 2109479
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1595596511892676 4.1874e-08  
a 2.585892115273906 1.6677e-08 au
q 2.173288071347725 1.0621e-07 au
i 13.34371689743094 6.0188e-06 deg
node 181.4570754647032 1.4852e-05 deg
peri 236.1959822551212 2.4818e-05 deg
M 105.018492579469 1.7967e-05 deg
tp 2458557.424935676263
(2019-Mar-14.92493568)
7.5237e-05 TDB
period 1518.847007214887
4.16
1.4693e-05
4.023e-08
d
yr
n .2370218977223603 2.2929e-09 deg/d
Q 2.998496159200088 1.9337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      11159 days (30.55 yr)  
   first obs. used      1989-10-07  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:05:05  

Additional Information
 Earth MOID = 1.21279 au 
 Jupiter MOID = 2.48722 au 
 T_jup = 3.366 
[ 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 15.5   n/a MPO469119  

109479 (2001 QR221)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 QR221 = 1989 TL5 = 1993 RJ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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