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 ]  
243453 (2009 HX85)
Classification: Jupiter Trojan          SPK-ID: 2243453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179806696157374 6.099e-08  
a 5.139599914717411 2.0587e-07 au
q 4.533226475222063 4.5267e-07 au
i 18.49221512557874 6.3189e-06 deg
node 193.7722242871911 1.6867e-05 deg
peri 93.97197587363644 4.2962e-05 deg
M 296.2431744663945 4.8746e-05 deg
tp 2459954.231353436329
(2023-Jan-09.73135344)
0.00061342 TDB
period 4255.909621693077
11.65
0.00025571
7.001e-07
d
yr
n .08458826243983669 5.0823e-09 deg/d
Q 5.745973354212757 2.3016e-07 au
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      6841 days (18.73 yr)  
   first obs. used      2001-08-27  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:28  

Additional Information
 Earth MOID = 3.58167 au 
 Jupiter MOID = .10786 au 
 T_jup = 2.884 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457336.5 (2015-Nov-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1155950005214814 6.1331e-08  
q 4.55931889302614 4.5766e-07 au
tp 2455682.219640059935
(2011-Apr-30.71964006)
0.00043439 TDB
node 193.7874991721659 1.6864e-05 deg
peri 93.50306009283889 4.3567e-05 deg
i 18.47707454444816 6.3142e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      6841 days (18.73 yr)  
   first obs. used      2001-08-27  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:28  

Additional Information
 Jupiter MOID = .10786 au 
 T_jup = 2.884 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.761546995414689E-15 -2.673509752578682E-14 -1.132993867612416E-11 -5.846700174472395E-15 -1.242185537521359E-12 -2.674217655359431E-15
q -2.673509752578682E-14 2.094495701934523E-13 1.059057158088672E-10 4.431126445132783E-14 1.168171712295804E-11 2.993232669675812E-14
tp -1.132993867612416E-11 1.059057158088672E-10 1.886937526809917E-7 3.049893830667032E-11 1.730514687553963E-8 1.472234204782547E-11
node -5.846700174472395E-15 4.431126445132783E-14 3.049893830667032E-11 2.843800338842457E-10 -2.663848783355719E-10 1.356639255082134E-11
peri -1.242185537521359E-12 1.168171712295804E-11 1.730514687553963E-8 -2.663848783355719E-10 1.898041346148759E-9 -1.09870615583087E-11
i -2.674217655359431E-15 2.993232669675812E-14 1.472234204782547E-11 1.356639255082134E-11 -1.09870615583087E-11 3.986928973835243E-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 13.22   n/a E2021B55  
diameter diameter 15.137 km 0.526 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.037   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243453 (2009 HX85)          Discovered 2009-Apr-29 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-04 23:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin