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441812 (2009 JH8)
Classification: Main-belt Asteroid          SPK-ID: 2441812
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09349615228673457 7.2908e-08  
a 3.020405005251596 5.7836e-08 au
q 2.738008758912977 2.2174e-07 au
i 13.60832416716111 8.0809e-06 deg
node 80.23643900905991 4.2031e-05 deg
peri 171.7423559834343 7.4542e-05 deg
M 55.88266932063147 5.9487e-05 deg
tp 2458902.874018438750
(2020-Feb-23.37401844)
0.00031543 TDB
period 1917.327047269243
5.25
5.507e-05
1.508e-07
d
yr
n .1877613944437548 5.393e-09 deg/d
Q 3.302801251590215 6.3243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      4462 days (12.22 yr)  
   first obs. used      2008-03-03  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:42:04  

Additional Information
 Earth MOID = 1.72236 au 
 Jupiter MOID = 1.75376 au 
 T_jup = 3.197 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.43   n/a E2021B25  

441812 (2009 JH8)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Aug-01 12:40 00:08 Jupiter 1.7652054469872 1.76520464479686 1.76520624917895 3.64689396174984 3.5128547360948 2421442.027830060 8.44139412691085 464.882799137837 43.3221590678174 87.4811531517297 1260302.61654757 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
1964-Aug-08 15:31 00:05 Jupiter 1.8005606690928 1.80055933129339 1.80056200689804 3.40763709289965 3.26667223484211 2438616.146336423 4.57484862459607 329.715948272505 61.6056846491159 -81.6164852974788 1509980.54908578 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2011-Aug-04 23:17 < 00:01 Jupiter 1.8769461320955 1.87694501655031 1.87694724764625 3.13725772647935 2.98995521003126 2455778.470004369 0.779909710435011 393.269177877807 43.9567021893639 -85.300732495635 1435902.83116971 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2049-May-05 13:29 00:03 Jupiter 1.93815606960942 1.93815444974558 1.93815768948726 3.99207931875356 3.88106266852828 2469567.061668557 2.79855680281967 303.832291656958 29.0703676232803 -75.9219962673794 1821070.39408219 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2058-Jul-20 11:03 00:04 Jupiter 1.98771948112315 1.9877173264166 1.98772163588517 3.01037999643859 2.865332815128 2472929.960572083 4.04212093553357 636.385279773975 46.6128920104533 -81.7707888308641 1374406.52606565 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2096-May-12 20:01 00:07 Jupiter 1.83403908810185 1.83403665638559 1.83404151990838 3.94317100281288 3.82425529649952 2486741.333722370 6.52305431390198 686.088768861481 25.5515234568321 -80.2866612325011 1776690.60772549 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2143-May-26 14:45 00:10 Jupiter 1.76939653879222 1.76939484416975 1.76939823357652 3.86191344873662 3.7359016961113 2503920.114654756 10.2517273989662 926.184892576038 26.0637635557335 -85.524936258538 1688126.00704412 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
2190-Jun-10 00:31 00:14 Jupiter 1.75295589083726 1.75295448750314 1.75295729424322 3.73925747551893 3.60772131094729 2521101.521353315 14.4630813082486 747.495704178849 48.9047426326673 84.6869712585709 1513099.24901845 T 13 CATAB v2.0f-lin.ifort 2021-Apr-14 14:42:04 2021-Apr-14 14:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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