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JPL Small-Body Database Browser
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5643 Roques (1990 QC2)
Classification: Main-belt Asteroid          SPK-ID: 2005643
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718724709072484 3.2781e-08  
a 2.190954007460134 5.3892e-09 au
q 1.814389328553823 7.1473e-08 au
i 5.005856719058136 4.1661e-06 deg
node 163.5426018172784 3.3779e-05 deg
peri 114.6328058410406 3.5552e-05 deg
M 351.0438246310742 1.0592e-05 deg
tp 2458629.969204078495
(2019-May-26.46920408)
3.4847e-05 TDB
period 1184.53614754651
3.24
4.3705e-06
1.197e-08
d
yr
n .3039164323905656 1.1213e-09 deg/d
Q 2.567518686366446 6.3154e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1953  
   data-arc span      24957 days (68.33 yr)  
   first obs. used      1951-08-08  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48419  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:02:22  

Additional Information
 Earth MOID = .804522 au 
 Jupiter MOID = 2.56491 au 
 T_jup = 3.649 
[ 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 14.5   n/a MPO337301  
rotation period rot_per 7.78 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]

5643 Roques (1990 QC2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 QC2 = 1977 RR8 = 1986 EM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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