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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 ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04564389764323517 7.4065e-08  
a 3.00112240364316 3.7924e-08 AU
q 2.864139479836452 2.3488e-07 AU
i 10.11712151580407 8.7024e-06 deg
node 337.1543361658556 3.8495e-05 deg
peri 261.1161367710794 0.00010758 deg
M 342.7122051632468 0.00010095 deg
tp 2457091.692913135480
(2015-Mar-10.19291314)
0.00053216 JED
period 1898.995738830645
5.20
3.5995e-05
9.855e-08
d
yr
n .1895738851008055 3.5933e-09 deg/d
Q 3.138105327449868 3.9655e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      14037 days (38.43 yr)  
   first obs. used      1977-01-13  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51998  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:28:21  

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
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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