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JPL Small-Body Database Browser
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39303 (2001 QR56)
Classification: Main-belt Asteroid          SPK-ID: 2039303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05030259087134748 4.3084e-08  
a 2.782097949739451 1.8924e-08 au
q 2.642151214809693 1.2063e-07 au
i 7.082356151799445 4.4542e-06 deg
node 126.523402765489 4.0118e-05 deg
peri 288.4763848271869 6.4657e-05 deg
M 296.3816288009221 5.3596e-05 deg
tp 2459300.027772098037
(2021-Mar-26.52777210)
0.00025347 TDB
period 1694.950623898653
4.64
1.7294e-05
4.735e-08
d
yr
n .21239556770801 2.1671e-09 deg/d
Q 2.922044684669209 1.9876e-08 au
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      7526 days (20.61 yr)  
   first obs. used      1997-10-29  
   last obs. used      2018-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5984  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:06:02  

Additional Information
 Earth MOID = 1.66466 au 
 Jupiter MOID = 2.25535 au 
 T_jup = 3.320 
[ 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 14.8   n/a MPO436045  

39303 (2001 QR56)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 QR56 = 1999 CU93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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