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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08914784208519382 5.8883e-08  
a 2.710754766577042 2.107e-08 AU
q 2.469096828714546 1.5778e-07 AU
i 3.097349288137985 6.7461e-06 deg
node 168.0517753162137 9.1764e-05 deg
peri 221.5298018397331 9.7548e-05 deg
M 119.8492146876909 3.2848e-05 deg
tp 2456457.791699573414
(2013-Jun-14.29169957)
0.00014799 JED
period 1630.17328618038
4.46
1.9006e-05
5.204e-08
d
yr
n .2208354185728975 2.5747e-09 deg/d
Q 2.952412704439539 2.2948e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      951  
   data-arc span      8990 days (24.61 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .582  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:05:09  

Additional Information
 Earth MOID = 1.47469 AU 
 T_jup = 3.355 
[ 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 14.2 mag n/a MPO247535  

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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