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90720 (1991 RS19)
Classification: Main-belt Asteroid          SPK-ID: 2090720
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2310171078486368 1.1974e-07  
a 2.610129234693929 2.6589e-08 AU
q 2.007144727783762 3.2169e-07 AU
i 5.040987401600839 1.2279e-05 deg
node 325.7514784449032 7.5409e-05 deg
peri 44.09589979134485 8.0021e-05 deg
M 126.3826311728473 2.3603e-05 deg
tp 2456259.775141912959
(2012-Nov-28.27514191)
9.7017e-05 JED
period 1540.250801117652
4.22
2.3535e-05
6.444e-08
d
yr
n .2337281692947495 3.5714e-09 deg/d
Q 3.213113741604096 3.2731e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      8211 days (22.48 yr)  
   first obs. used      1991-09-12  
   last obs. used      2014-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58117  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 12:33:54  

Additional Information
 Earth MOID = 1.00862 AU 
 T_jup = 3.366 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO280374  

90720 (1991 RS19)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar (675)
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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