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
JPL Small-Body Database Browser
Search: [ help ]  
85947 (1999 ET11)
Classification: Main-belt Asteroid          SPK-ID: 2085947
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2064304573034446 8.3094e-08  
a 2.652141781696025 1.8417e-08 au
q 2.104658940866942 2.2751e-07 au
i 28.62000208573153 7.7788e-06 deg
node 76.64576470744872 9.9616e-06 deg
peri 90.39536279390859 2.3221e-05 deg
M 322.9432379891012 1.987e-05 deg
tp 2459162.889707897519
(2020-Nov-09.38970790)
8.7919e-05 TDB
period 1577.587778066336
4.32
1.6433e-05
4.499e-08
d
yr
n .2281964940431115 2.377e-09 deg/d
Q 3.199624622525108 2.2219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9521 days (26.07 yr)  
   first obs. used      1994-04-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:41:17  

Additional Information
 Earth MOID = 1.30794 au 
 Jupiter MOID = 2.32125 au 
 T_jup = 3.188 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457125.5 (2015-Apr-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069586111433643 8.3334e-08  
q 2.102518550238966 2.2823e-07 au
tp 2457586.618355874251
(2016-Jul-17.11835587)
8.0496e-05 TDB
node 76.67269325887692 9.9665e-06 deg
peri 90.55372609224112 2.3108e-05 deg
i 28.61723195646276 7.778e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9521 days (26.07 yr)  
   first obs. used      1994-04-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:41:17  

Additional Information
 Jupiter MOID = 2.32125 au 
 T_jup = 3.188 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.944635173739828E-15 -1.898898682830881E-14 3.342848181253864E-13 2.28009627696557E-14 6.8985409945854E-13 -3.871839034526273E-14
q -1.898898682830881E-14 5.208775215968428E-14 -4.891678982789978E-13 -6.273614700537093E-14 -1.796968072652748E-12 1.119159703249688E-13
tp 3.342848181253864E-13 -4.891678982789978E-13 6.479625110633834E-9 2.603146057480375E-13 1.584896157016196E-9 3.626776134337433E-11
node 2.28009627696557E-14 -6.273614700537093E-14 2.603146057480375E-13 9.933062512657275E-11 -8.422032678171505E-11 -9.636015549387672E-12
peri 6.8985409945854E-13 -1.796968072652748E-12 1.584896157016196E-9 -8.422032678171505E-11 5.339923785129913E-10 1.368488116470169E-11
i -3.871839034526273E-14 1.119159703249688E-13 3.626776134337433E-11 -9.636015549387672E-12 1.368488116470169E-11 6.049684975961909E-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 14.3   n/a MPO267963  
diameter diameter 7.591 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.064   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85947 (1999 ET11)          Discovered 1999-Mar-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 ET11 = 2002 TP266 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-01 19:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin