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91454 (1999 RK49)
Classification: Main-belt Asteroid          SPK-ID: 2091454
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770125791968338 5.0546e-08  
a 2.69745610846774 1.6303e-08 au
q 2.219972445437611 1.3802e-07 au
i 12.27602579379442 6.4589e-06 deg
node 335.5690636605965 1.8662e-05 deg
peri 333.1465847162201 2.4094e-05 deg
M 255.1311703423625 1.7173e-05 deg
tp 2459471.883012549556
(2021-Sep-14.38301255)
7.8642e-05 TDB
period 1618.191840910674
4.43
1.4671e-05
4.017e-08
d
yr
n .2224705321696604 2.0169e-09 deg/d
Q 3.174939771497868 1.9189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      8060 days (22.07 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58047  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:41:12  

Additional Information
 Earth MOID = 1.21322 au 
 Jupiter MOID = 2.15703 au 
 T_jup = 3.314 
[ 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 15.1   n/a MPO337940  

91454 (1999 RK49)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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