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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05651774900563011 5.9882e-08  
a 2.573243941257878 2.179e-08 au
q 2.427809986055607 1.5206e-07 au
i 13.9937649146153 6.497e-06 deg
node 271.2276855103395 2.5669e-05 deg
peri 315.5523576367078 6.5416e-05 deg
M 315.6290059942928 6.1147e-05 deg
tp 2457586.330297600613
(2016-Jul-16.83029760)
0.00025611 JED
period 1507.717116448096
4.13
1.9151e-05
5.243e-08
d
yr
n .2387715812685696 3.0328e-09 deg/d
Q 2.71867789646015 2.3021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      9050 days (24.78 yr)  
   first obs. used      1991-02-11  
   last obs. used      2015-11-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48102  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:04:21  

Additional Information
 Earth MOID = 1.42976 au 
 Jupiter MOID = 2.36712 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-Feb-08 01:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin