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 ]  
27970 (1997 TR9)
Classification: Main-belt Asteroid          SPK-ID: 2027970
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06047104019885964 3.7167e-08  
a 2.665465370193234 1.086e-08 au
q 2.504281906643611 9.9885e-08 au
i .8881504811847494 3.5694e-06 deg
node 252.23269610 0.00026441 deg
peri 78.84737462703437 0.00026641 deg
M 34.13631915936879 3.1828e-05 deg
tp 2458449.779549610541
(2018-Nov-27.27954961)
0.00014045 TDB
period 1589.490708910057
4.35
9.7145e-06
2.66e-08
d
yr
n .2264876403378655 1.3842e-09 deg/d
Q 2.826648833742858 1.1517e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1205  
   data-arc span      9017 days (24.69 yr)  
   first obs. used      1995-03-27  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55596  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:43:07  

Additional Information
 Earth MOID = 1.49255 au 
 Jupiter MOID = 2.37512 au 
 T_jup = 3.381 
[ 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 14.9   n/a MPO449168  
diameter diameter 2.661 km 0.856 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27970 (1997 TR9)          Discovered 1997-Oct-02 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 TR9 = 2000 JG35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 18:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin