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 ]  
249237 (2008 HJ10)
Classification: Jupiter Trojan          SPK-ID: 2249237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207284470195588 7.3135e-08  
a 5.234532367802275 2.9031e-07 au
q 4.602575404163893 4.4497e-07 au
i 14.19840241824873 8.2099e-06 deg
node 204.5888302028535 3.155e-05 deg
peri 87.61811065169312 6.0252e-05 deg
M 256.019459256329 6.4103e-05 deg
tp 2459863.969702426451
(2022-Oct-11.46970243)
0.00086631 TDB
period 4374.367450105878
11.98
0.0003639
9.963e-07
d
yr
n .08229761310776179 6.8463e-09 deg/d
Q 5.866489331440659 3.2535e-07 au
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      6769 days (18.53 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58598  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:32:54  

Additional Information
 Earth MOID = 3.62523 au 
 Jupiter MOID = .250024 au 
 T_jup = 2.925 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456789.5 (2014-May-12.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190859025530404 7.3304e-08  
q 4.620219005654055 4.4625e-07 au
tp 2455491.139798043244
(2010-Oct-21.63979804)
0.00059726 TDB
node 204.5797205040477 3.1534e-05 deg
peri 88.10297701767175 6.0734e-05 deg
i 14.19386055818307 8.207e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      6769 days (18.53 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58598  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:32:54  

Additional Information
 Jupiter MOID = .250024 au 
 T_jup = 2.925 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.373458093595967E-15 -2.670375454680703E-14 1.436211891766675E-11 -1.008922094559637E-14 1.062929691100843E-12 3.801108048424582E-15
q -2.670375454680703E-14 1.991391131327467E-13 2.181087724355583E-11 8.196457203190494E-14 4.064017810627867E-12 1.458849919809668E-14
tp 1.436211891766675E-11 2.181087724355583E-11 3.567186395898413E-7 -2.165000672701902E-11 3.094823760258398E-8 5.580090074363063E-11
node -1.008922094559637E-14 8.196457203190494E-14 -2.165000672701902E-11 9.943806421736228E-10 -9.643820545719823E-10 -5.50723713086662E-11
peri 1.062929691100843E-12 4.064017810627867E-12 3.094823760258398E-8 -9.643820545719823E-10 3.68860449662917E-9 5.878996664667997E-11
i 3.801108048424582E-15 1.458849919809668E-14 5.580090074363063E-11 -5.50723713086662E-11 5.878996664667997E-11 6.735485807587329E-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 13.0   n/a MPO433633  
diameter diameter 13.364 km 0.719 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

249237 (2008 HJ10)          Discovered 2008-Apr-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 HJ10 = 2001 US172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 20:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin