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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04606162805659939 7.393e-08  
a 3.002611538596811 3.8017e-08 au
q 2.864306362707511 2.3472e-07 au
i 10.11662573926357 8.7023e-06 deg
node 337.1514769613633 3.8489e-05 deg
peri 261.4343877255552 0.00010686 deg
M 96.08812102608086 9.9788e-05 deg
tp 2457093.258999065039
(2015-Mar-11.75899907)
0.0005286 JED
period 1900.409315809408
5.20
3.6093e-05
9.882e-08
d
yr
n .1894328748050109 3.5978e-09 deg/d
Q 3.140916714486111 3.9769e-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 = 1.87577 au 
 Jupiter MOID = 1.92306 au 
 T_jup = 3.227 
[ 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  
rotation period rot_per 5.0768 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

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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