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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
97981 (2000 QH171)
Classification: Main-belt Asteroid          SPK-ID: 2097981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09939627599942392 4.6077e-08  
a 2.260462254586618 9.3261e-09 au
q 2.035780724443446 1.047e-07 au
i 4.303840328252228 4.0001e-06 deg
node 304.7378665364597 6.0683e-05 deg
peri 252.3287271941019 6.3305e-05 deg
M 78.12740021428597 1.8324e-05 deg
tp 2458731.101490683825
(2019-Sep-04.60149068)
6.2983e-05 TDB
period 1241.350193246148
3.40
7.6822e-06
2.103e-08
d
yr
n .2900068022373242 1.7947e-09 deg/d
Q 2.485143784729789 1.0253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      7326 days (20.06 yr)  
   first obs. used      1999-04-11  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 00:26:59  

Additional Information
 Earth MOID = 1.0391 au 
 Jupiter MOID = 2.49143 au 
 T_jup = 3.610 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO366351  

97981 (2000 QH171)          Discovered 2000-Aug-31 by LINEAR at Socorro
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-02 18:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin