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JPL Small-Body Database Browser
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74158 (1998 QU97)
Classification: Main-belt Asteroid          SPK-ID: 2074158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2223615210798096 6.4594e-08  
a 2.38875953808336 1.8006e-08 au
q 1.857591333701241 1.5909e-07 au
i 22.676346572015 8.0692e-06 deg
node 324.8130636756335 1.4646e-05 deg
peri 298.868996421986 2.4878e-05 deg
M 27.32723288397233 2.7825e-05 deg
tp 2458898.135295934307
(2020-Feb-18.63529593)
0.00010349 TDB
period 1348.519025695544
3.69
1.5247e-05
4.174e-08
d
yr
n .2669595260729213 3.0184e-09 deg/d
Q 2.919927742465479 2.201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      569  
   data-arc span      8120 days (22.23 yr)  
   first obs. used      1997-02-03  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:39:29  

Additional Information
 Earth MOID = .929328 au 
 Jupiter MOID = 2.5333 au 
 T_jup = 3.397 
[ 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 14.9   n/a MPO236708  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2166-Oct-14 03:22 00:02 Hebe 0.0330499511921229 0.0330200436102475 0.0330798628655416 13.2988450396209 13.2988450254769 2512461.640213166 2.43845275954837 1600.31097861728 59.2771521282846 -21.2764556720644 30399.5401828971 T 14 CATAB v2.0e-lin.ifort 2019-Jul-13 05:39:36 2019-Jul-13 05:39

Alternate Designations
 1998 QU97 = 1997 EJ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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