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JPL Small-Body Database Browser
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91431 (1999 RQ)
Classification: Main-belt Asteroid          SPK-ID: 2091431
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09659160602435318 5.6637e-08  
a 2.772964520116442 2.139e-08 au
q 2.505119423669845 1.5522e-07 au
i 4.547962647076032 5.735e-06 deg
node 90.43979403441904 7.527e-05 deg
peri 250.7478441302716 8.1964e-05 deg
M 179.3260426610084 3.4979e-05 deg
tp 2458160.352073229542
(2018-Feb-10.85207323)
0.00016214 TDB
period 1686.610874523741
4.62
1.9515e-05
5.343e-08
d
yr
n .2134457956116615 2.4697e-09 deg/d
Q 3.04080961656304 2.3456e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      10203 days (27.93 yr)  
   first obs. used      1992-01-29  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:02:47  

Additional Information
 Earth MOID = 1.50107 au 
 Jupiter MOID = 2.29857 au 
 T_jup = 3.325 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO453354  

91431 (1999 RQ)          Discovered 1999-Sep-03 by Sarounova, L. at Ondrejov
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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