Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
74158 (1998 QU97)
Classification: Main-belt Asteroid          SPK-ID: 2074158
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2222397372496772 4.5541e-08  
a 2.387910332673465 1.1781e-08 au
q 1.857221767764325 1.0473e-07 au
i 22.67898726922196 7.0215e-06 deg
node 324.8139375244147 9.582e-06 deg
peri 298.7904524514129 1.9643e-05 deg
M 80.8113935193379 1.8303e-05 deg
tp 2458897.951123804292
(2020-Feb-18.45112380)		 6.81e-05 TDB
period 1347.799990658388
3.69		 9.9746e-06
2.731e-08		 d
yr
n .2671019457598774 1.9767e-09 deg/d
Q 2.918598897582605 1.44e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1006  
   data-arc span      8740 days (23.93 yr)  
   first obs. used      1997-02-03  
   last obs. used      2021-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:56:24  

Additional Information
 Earth MOID = .927413 au 
 Jupiter MOID = 2.53435 au 
 T_jup = 3.398 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.04   n/a E2021B10  

74158 (1998 QU97)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QU97 = 1997 EJ7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-26 10:07 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin