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 ]  
5830 Simohiro (1991 EG)
Classification: Main-belt Asteroid          SPK-ID: 2005830
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027849680192228 5.1615e-08  
a 2.27431315791926 9.9315e-09 AU
q 1.813116636924905 1.154e-07 AU
i 5.26970779456704 5.7418e-06 deg
node 48.29096931542317 6.1077e-05 deg
peri 81.46189237230537 6.2714e-05 deg
M .4783488210641794 1.5152e-05 deg
tp 2456998.835376467167
(2014-Dec-07.33537647)
5.2724e-05 JED
period 1252.777148037355
3.43
8.2059e-06
2.247e-08
d
yr
n .2873615635182911 1.8823e-09 deg/d
Q 2.735509678913615 1.1945e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      12377 days (33.89 yr)  
   first obs. used      1981-05-08  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53931  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:23:09  

Additional Information
 Earth MOID = .837109 AU 
 T_jup = 3.577 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO270220  

5830 Simohiro           Discovered 1991 Mar. 9 by T. Niijima and T. Urata at Ojima.
Hiroshi Shimoda (b. 1949) is a Japanese amateur astronomer and specialist in agricultural management in Gunma prefecture. He is a devoted observer of small bodies in the solar system. As an early member of the astronomical society Ota-Uchuno-Kai he encouraged many amateur astronomers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1991 EG = 1984 CC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Apr-19 14:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin