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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456724.5 (2014-Mar-08.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05204752744622711 4.5692e-08  
q 4.870854902758682 2.7887e-07 au
tp 2455359.023338059445
(2010-Jun-11.52333806)
0.00079152 TDB
node 278.0145031765978 2.8457e-05 deg
peri 149.3539150362025 7.1877e-05 deg
i 11.99087911563417 4.7821e-06 deg
  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
 Jupiter MOID = .149404 au 
 T_jup = 2.954 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.087774999696927E-15 -1.22955406684003E-14 -8.961581779425344E-12 9.05968639604065E-15 -7.745266446343248E-13 8.041890013914993E-16
q -1.22955406684003E-14 7.776576365285932E-14 5.813653955254881E-11 -4.948301594210726E-14 5.189094025166669E-12 -2.174034743929492E-15
tp -8.961581779425344E-12 5.813653955254881E-11 6.265014646474945E-7 -2.323687174667694E-10 5.233414296136108E-8 7.823829987667307E-12
node 9.05968639604065E-15 -4.948301594210726E-14 -2.323687174667694E-10 8.097932045918319E-10 -8.111224531332534E-10 2.536597619070003E-11
peri -7.745266446343248E-13 5.189094025166669E-12 5.233414296136108E-8 -8.111224531332534E-10 5.166263958039734E-9 -2.410084599244305E-11
i 8.041890013914993E-16 -2.174034743929492E-15 7.823829987667307E-12 2.536597619070003E-11 -2.410084599244305E-11 2.286887824847723E-11

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