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 ]  
91034 (1998 EH21)
Classification: Inner Main-belt Asteroid          SPK-ID: 2091034
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06654862536678451 1.4464e-07  
a 1.899943168265039 1.5597e-08 AU
q 1.773504562141988 2.766e-07 AU
i 21.92919140860644 1.5217e-05 deg
node 162.3743222552693 2.0523e-05 deg
peri 200.908818440818 6.3005e-05 deg
M 222.6225406905379 5.9851e-05 deg
tp 2457165.524758118620
(2015-May-23.02475812)
0.00015913 JED
period 956.5536703272857
2.62
1.1778e-05
3.225e-08
d
yr
n .3763510727807104 4.6342e-09 deg/d
Q 2.026381774388091 1.6634e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      5941 days (16.27 yr)  
   first obs. used      1998-03-01  
   last obs. used      2014-06-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61809  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 16:00:06  

Additional Information
 Earth MOID = .770984 AU 
 T_jup = 3.857 
[ 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 16.4 mag n/a MPO244867  

91034 (1998 EH21)          Discovered 1998-Mar-01 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-30 23:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin