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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04556679110049215 8.6828e-08  
a 3.001090886704805 4.0931e-08 AU
q 2.864340805196737 2.7878e-07 AU
i 10.1172141510634 9.5378e-06 deg
node 337.1550938635854 3.8968e-05 deg
peri 261.0075886333589 0.00012521 deg
M 304.892291126735 0.00012273 deg
tp 2457091.187932875835
(2015-Mar-09.68793288)
0.0006477 JED
period 1898.965824835252
5.20
3.8849e-05
1.064e-07
d
yr
n .1895768714169632 3.8784e-09 deg/d
Q 3.137840968212874 4.2796e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      785  
   data-arc span      13651 days (37.37 yr)  
   first obs. used      1977-01-13  
   last obs. used      2014-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52642  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:08:50  

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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