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 ]  
9986 Hirokun (1996 NX)
Classification: Main-belt Asteroid          SPK-ID: 2009986
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0561742708676028 5.8714e-08  
a 2.572296912395944 1.954e-08 au
q 2.427800008887116 1.5045e-07 au
i 13.99529169714622 5.9462e-06 deg
node 271.2067468280985 2.5597e-05 deg
peri 315.6741675571162 6.3279e-05 deg
M 3.290442367005032 5.7257e-05 deg
tp 2457586.726894974461
(2016-Jul-17.22689497)
0.0002397 JED
period 1506.884867188013
4.13
1.717e-05
4.701e-08
d
yr
n .2389034542976023 2.7222e-09 deg/d
Q 2.716793815904772 2.0638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1183  
   data-arc span      9196 days (25.18 yr)  
   first obs. used      1991-02-11  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47161  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:06:59  

Additional Information
 Earth MOID = 1.43048 au 
 Jupiter MOID = 2.36982 au 
 T_jup = 3.385 
[ 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 12.4 mag n/a MPO267747  

9986 Hirokun           Discovered 1996 July 12 by Y. Shimizu and T. Urata at Nachi-Katsuura.
Hirokun is a nickname for Hiroshi Fukazawa, who was the fiancé of Mizuho Urata (1972-2004), daughter of the second discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1996 NX = 1991 CM2 = 1991 GM1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-03 03:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin