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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06636884260908862 1.069e-07  
a 1.899947024676099 1.4181e-08 au
q 1.773849739629765 2.0081e-07 au
i 21.92991489619691 1.1969e-05 deg
node 162.3705191904897 2.0076e-05 deg
peri 200.7928504391494 6.1598e-05 deg
M 88.53439490447789 5.7775e-05 deg
tp 2457165.255116002201
(2015-May-22.75511600)
0.00015351 JED
period 956.5565826770498
2.62
1.0709e-05
2.932e-08
d
yr
n .3763499269353126 4.2136e-09 deg/d
Q 2.026044309722434 1.5122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      6490 days (17.77 yr)  
   first obs. used      1998-03-01  
   last obs. used      2015-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5926  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 16:26:28  

Additional Information
 Earth MOID = .770602 au 
 Jupiter MOID = 3.19991 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 16.5 mag n/a MPO309817  

91034 (1998 EH21)          Discovered 1998-Mar-01 by BAO Schmidt CCD Asteroid Program at Xinglong
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 2016-Feb-07 05:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin