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21041 (1990 QO1)
Classification: Main-belt Asteroid          SPK-ID: 2021041
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04556674296736152 8.842e-08  
a 3.001090871338848 4.0853e-08 AU
q 2.864340934982856 2.8343e-07 AU
i 10.1172280246137 9.9488e-06 deg
node 337.1551444713883 4.0223e-05 deg
peri 261.0075454173128 0.00012771 deg
M 304.8922921743666 0.00012472 deg
tp 2457091.187925117141
(2015-Mar-09.68792512)
0.00065818 JED
period 1898.965810250842
5.20
3.8775e-05
1.062e-07
d
yr
n .1895768728729487 3.871e-09 deg/d
Q 3.13784080769484 4.2714e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      774  
   data-arc span      13599 days (37.23 yr)  
   first obs. used      1977-01-13  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54441  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:16:08  

Additional Information
 Earth MOID = 1.87611 AU 
 T_jup = 3.228 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO257017  

21041 (1990 QO1)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QO1 = 1977 AD2 = 2000 PZ22 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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