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27955 Yasumasa (1997 QU4)
Classification: Main-belt Asteroid          SPK-ID: 2027955
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2110207370853156 9.1196e-08  
a 2.39790183243446 1.1312e-08 AU
q 1.891894820295911 2.2089e-07 AU
i 6.879528880965517 9.075e-06 deg
node 329.4660846152027 5.642e-05 deg
peri 52.41390579644862 5.9616e-05 deg
M 148.8809420106209 1.7794e-05 deg
tp 2456239.604270420616
(2012-Nov-08.10427042)
6.533e-05 JED
period 1356.268034858171
3.71
9.5972e-06
2.628e-08
d
yr
n .265434258382154 1.8783e-09 deg/d
Q 2.903908844573009 1.3699e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      19549 days (53.52 yr)  
   first obs. used      1960-09-25  
   last obs. used      2014-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56524  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:26:22  

Additional Information
 Earth MOID = .901897 AU 
 T_jup = 3.488 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7 mag n/a PDS3 (MPO 15211)  

27955 Yasumasa           Discovered 1997 Aug. 24 by T. Okuni at Nanyo.
Yasumasa Watanabe (b. 1946) became a member of the Yamagata Astronomical Society in 1986 and actively popularizes astronomy.
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

[ show close-approach data ]
Alternate Designations
 1997 QU4 = 1986 RA14 = 3080 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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