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JPL Small-Body Database Browser
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136824 Nonamikeiko (1997 RJ5)
Classification: Main-belt Asteroid          SPK-ID: 2136824
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735635023203649 4.5436e-08  
a 2.716501642233013 1.6638e-08 au
q 2.245016103148028 1.2835e-07 au
i 3.961272033801094 4.61e-06 deg
node 322.0841720653457 6.0206e-05 deg
peri 49.10262583478319 6.174e-05 deg
M 284.3164243622039 1.2635e-05 deg
tp 2458944.305267191401
(2020-Apr-04.80526719)
5.8565e-05 TDB
period 1635.360051977964
4.48
1.5024e-05
4.113e-08
d
yr
n .2201350091465063 2.0224e-09 deg/d
Q 3.187987181317998 1.9526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      8028 days (21.98 yr)  
   first obs. used      1997-09-08  
   last obs. used      2019-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50278  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:28:11  

Additional Information
 Earth MOID = 1.2463 au 
 Jupiter MOID = 2.29123 au 
 T_jup = 3.335 
[ 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 15.5   n/a MPO417724  

136824 Nonamikeiko           Discovered 1997 Sept. 8 by H. Abe at Yatsuka.
Keiko Nonami (b.1960) is a member of Matsue Astronomy Club. She popularizes astronomy in Shimane prefecture and is an observing partner of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111210/MPCPages.arcLast Updated: 2011-12-12

Alternate Designations
 1997 RJ5 = 2002 XS41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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