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19989 (1990 RN8)
Classification: Main-belt Asteroid          SPK-ID: 2019989
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08981226222821494 5.8989e-08  
a 2.708895331045782 2.0244e-08 au
q 2.465603313225111 1.5794e-07 au
i 3.098772930953596 6.687e-06 deg
node 168.0555433601753 8.7707e-05 deg
peri 221.272437243572 9.3301e-05 deg
M 208.5040150089747 3.2214e-05 deg
tp 2458085.807344530165
(2017-Nov-28.30734453)
0.00014773 JED
period 1628.496253847748
4.46
1.8255e-05
4.998e-08
d
yr
n .2210628358213327 2.478e-09 deg/d
Q 2.952187348866453 2.2062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      994  
   data-arc span      9096 days (24.90 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58056  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:53:59  

Additional Information
 Earth MOID = 1.46975 au 
 Jupiter MOID = 2.44763 au 
 T_jup = 3.356 
[ 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 14.3 mag n/a MPO337427  

19989 (1990 RN8)          Discovered 1990-Sep-15 by Debehogne, H. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RN8 = 1986 WF4 = 1999 RN27 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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