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JPL Small-Body Database Browser
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201528 (2003 QL20)
Classification: Main-belt Asteroid          SPK-ID: 2201528
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09830491188522698 5.825e-08  
a 2.682429381865186 2.5795e-08 au
q 2.418733397842585 1.651e-07 au
i 6.261502212840947 5.2671e-06 deg
node 90.97721709932723 5.56e-05 deg
peri 275.9346253565535 6.184e-05 deg
M 185.757909886362 2.8957e-05 deg
tp 2459377.178788149852
(2021-Jun-11.67878815)
0.00013449 TDB
period 1604.688990769067
4.39
2.3147e-05
6.337e-08
d
yr
n .2243425374455056 3.236e-09 deg/d
Q 2.946125365887787 2.8331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      327  
   data-arc span      7141 days (19.55 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59312  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:11:47  

Additional Information
 Earth MOID = 1.4265 au 
 Jupiter MOID = 2.50603 au 
 T_jup = 3.360 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO433320  
rotation period rot_per 4.596 h n/a LCDB (Rev. 2019-January); 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. (2015) Astron. J. 150, A75.]

201528 (2003 QL20)          Discovered 2003-Aug-22 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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