Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104110235734798 6.2705e-08  
a 2.407907770524525 1.8161e-08 AU
q 1.901257431857924 1.5048e-07 AU
i 10.4224015761945 7.0452e-06 deg
node 140.4710394867038 3.3129e-05 deg
peri 202.4617557856989 3.6922e-05 deg
M 255.5248237515302 2.1206e-05 deg
tp 2457396.567138705189
(2016-Jan-09.06713871)
8.3252e-05 JED
period 1364.766014797284
3.74
1.544e-05
4.227e-08
d
yr
n .2637814805591219 2.9842e-09 deg/d
Q 2.914558109191126 2.1982e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      22523 days (61.66 yr)  
   first obs. used      1952-10-21  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51332  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:19:13  

Additional Information
 Earth MOID = .897211 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-01 23:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin