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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733150968946876 4.5312e-08  
a 2.714866199204005 1.6352e-08 au
q 2.24433890083285 1.2797e-07 au
i 3.962853937332897 4.6076e-06 deg
node 322.0707545474446 6.0169e-05 deg
peri 49.30164396247566 6.1716e-05 deg
M 12.24812860655626 1.2976e-05 deg
tp 2458944.911070636435
(2020-Apr-05.41107064)
5.8693e-05 TDB
period 1633.883445685823
4.47
1.4762e-05
4.042e-08
d
yr
n .2203339540225833 1.9907e-09 deg/d
Q 3.185393497575159 1.9187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      8414 days (23.04 yr)  
   first obs. used      1997-09-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:40:51  

Additional Information
 Earth MOID = 1.24652 au 
 Jupiter MOID = 2.29743 au 
 T_jup = 3.336 
[ 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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