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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2110069848306148 8.6365e-08  
a 2.397911972671583 1.2129e-08 AU
q 1.891935797428921 2.095e-07 AU
i 6.879424814420627 8.6078e-06 deg
node 329.4649414950105 5.2727e-05 deg
peri 52.38826212264856 5.5851e-05 deg
M 202.00759350322 1.7219e-05 deg
tp 2457595.726138619988
(2016-Jul-26.22613862)
6.7182e-05 JED
period 1356.276637938057
3.71
1.029e-05
2.817e-08
d
yr
n .2654325746901509 2.0138e-09 deg/d
Q 2.903888147914246 1.4688e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      586  
   data-arc span      19601 days (53.66 yr)  
   first obs. used      1960-09-25  
   last obs. used      2014-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54745  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:22:40  

Additional Information
 Earth MOID = .903174 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 14.8 mag n/a MPO296355  

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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