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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2108898942780846 7.8821e-08  
a 2.398472922961477 1.2137e-08 au
q 1.892659221809282 1.9166e-07 au
i 6.879355136515255 8.0306e-06 deg
node 329.4625435438448 5.1904e-05 deg
peri 52.32654269008601 5.4563e-05 deg
M 308.2273851211618 1.6739e-05 deg
tp 2457595.618413675358
(2016-Jul-26.11841368)
6.3906e-05 JED
period 1356.752582181052
3.71
1.0299e-05
2.82e-08
d
yr
n .2653394618356141 2.0141e-09 deg/d
Q 2.904286624113671 1.4697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      19993 days (54.74 yr)  
   first obs. used      1960-09-25  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54335  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:41:45  

Additional Information
 Earth MOID = .902323 au 
 Jupiter MOID = 2.59308 au 
 T_jup = 3.487 
[ 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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