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91444 (1999 RS17)
Classification: Main-belt Asteroid          SPK-ID: 2091444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2781329909414543 7.899e-08  
a 2.937056064049931 1.1607e-08 au
q 2.120163876392988 2.3275e-07 au
i 1.350623423046355 5.9513e-06 deg
node 293.0475346918207 0.00026183 deg
peri 48.25019091803424 0.00026197 deg
M 49.82087357258542 6.9817e-06 deg
tp 2458746.065722440712
(2019-Sep-19.56572244)
3.5201e-05 TDB
period 1838.51332489974
5.03
1.0899e-05
2.984e-08
d
yr
n .1958103839250836 1.1608e-09 deg/d
Q 3.753948251706873 1.4836e-08 au
  Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7461 days (20.43 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:30:15  

Additional Information
 Earth MOID = 1.1122 au 
 Jupiter MOID = 1.66522 au 
 T_jup = 3.215 
[ 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 16.0   n/a MPO493511  

91444 (1999 RS17)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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