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8271 Imai (1989 NY)
Classification: Main-belt Asteroid          SPK-ID: 2008271
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104317397043881 5.6748e-08  
a 2.408216923832613 1.5306e-08 au
q 1.901451646964967 1.3959e-07 au
i 10.4221966202409 6.4929e-06 deg
node 140.46792281565 3.1447e-05 deg
peri 202.3764066839317 3.4971e-05 deg
M 53.83967473908272 1.9136e-05 deg
tp 2457396.353584036407
(2016-Jan-08.85358404)
7.1518e-05 JED
period 1365.028858421847
3.74
1.3014e-05
3.563e-08
d
yr
n .2637306880209165 2.5143e-09 deg/d
Q 2.914982200700261 1.8527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1124  
   data-arc span      22942 days (62.81 yr)  
   first obs. used      1952-10-21  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50321  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:24:20  

Additional Information
 Earth MOID = .896066 au 
 Jupiter MOID = 2.47937 au 
 T_jup = 3.469 
[ 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 13.4 mag n/a MPO259400  

8271 Imai           Discovered 1989 July 2 by E. F. Helin at Palomar.
Yasushi Imai (b. 1949) was the president of a planetarium manufacturing company from 1998 to 2009. His tireless and distinguished efforts encouraged wide-ranging product development in this field.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1989 NY = 1952 UB = 1978 PA5 = 1978 SV = 1993 SU3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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