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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04564384111987015 8.6746e-08  
a 3.001122420369968 4.0743e-08 AU
q 2.864139665433321 2.7846e-07 AU
i 10.1171239581423 9.5378e-06 deg
node 337.1543393443494 3.8948e-05 deg
peri 261.1162098245284 0.00012516 deg
M 342.7121216129981 0.00012273 deg
tp 2457091.693354624454
(2015-Mar-10.19335462)
0.00064751 JED
period 1898.995754706774
5.20
3.8671e-05
1.059e-07
d
yr
n .1895738835159155 3.8604e-09 deg/d
Q 3.138105175306615 4.2602e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      791  
   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      .52459  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:35:27  

Additional Information
 Earth MOID = 1.87736 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 13.0 mag n/a MPO302194  

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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