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 ]  
6545 (1986 TR6)
Classification: Jupiter Trojan          SPK-ID: 2006545
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05062367197179145 4.5892e-08  
a 5.149340343170851 8.5172e-08 au
q 4.888661826767058 2.8051e-07 au
i 11.98629997045084 4.7806e-06 deg
node 278.0088751699607 2.8448e-05 deg
peri 148.4211462777212 7.3372e-05 deg
M 275.0857487338642 7.0193e-05 deg
tp 2459607.208896420513
(2022-Jan-27.70889642)
0.00083957 TDB
period 4268.013876440051
11.69
0.00010589
2.899e-07
d
yr
n .08434836680996827 2.0927e-09 deg/d
Q 5.410018859574644 8.9484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1503  
   data-arc span      12076 days (33.06 yr)  
   first obs. used      1986-10-05  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45269  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:55:17  

Additional Information
 Earth MOID = 3.90936 au 
 Jupiter MOID = .149404 au 
 T_jup = 2.954 
[ 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 10.1   n/a MPO302104  
diameter diameter 50.951 km 0.569 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 16.26 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

6545 (1986 TR6)          Discovered 1986-Oct-05 by Antal, M. at Piwnice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1986 TR6 = 1989 EY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin