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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09300400462971985 7.3258e-08  
a 3.02028762965853 5.5985e-08 au
q 2.739388784966683 2.2172e-07 au
i 13.61851029153914 8.0865e-06 deg
node 80.27025081052095 4.1972e-05 deg
peri 172.0616098363636 7.4619e-05 deg
M 18.05863193147759 5.9466e-05 deg
tp 2458904.326985660508
(2020-Feb-24.82698566)
0.00031631 TDB
period 1917.215284833832
5.25
5.3308e-05
1.459e-07
d
yr
n .1877723398346481 5.2209e-09 deg/d
Q 3.301186474350377 6.1192e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:52:22  

Additional Information
 Earth MOID = 1.72528 au 
 Jupiter MOID = 1.7568 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 16.2   n/a MPO477084  

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 12:41 00:08 Jupiter 1.76520536689393 1.76520456470803 1.76520616908123 3.64689495606277 3.51285576139506 2421442.028470514 8.44094036142101 464.864808463383 43.3219051561065 87.4813090214212 1260313.19837598 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
1964-Aug-08 15:31 00:05 Jupiter 1.80056054919856 1.8005592114106 1.80056188699235 3.40763780087288 3.2666729629816 2438616.146602763 4.57475735805043 329.714447163806 61.6052224776408 -81.6166039968163 1509986.82659851 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2011-Aug-04 23:17 < 00:01 Jupiter 1.87694607660454 1.87694496105928 1.87694719215525 3.13725810064456 2.98995559733402 2455778.470014758 0.779909592278255 393.269107194793 43.9567026906498 -85.3007331803317 1435902.70923039 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2049-May-05 13:29 00:03 Jupiter 1.93815614648146 1.93815452662471 1.9381577663522 3.99207898258467 3.88106232658749 2469567.061697292 2.79853358242824 303.830186464195 29.0703684749328 -75.9219723595482 1821070.28413437 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2058-Jul-20 11:03 00:04 Jupiter 1.98771934718978 1.98771719250892 1.98772150192612 3.01038024199977 2.86533306227756 2472929.960675940 4.04206652238772 636.377864242181 46.6128634780078 -81.7708159061746 1374406.59338446 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2096-May-12 20:01 00:07 Jupiter 1.83403926420059 1.83403683257438 1.83404169591707 3.94317086029171 3.82425516047494 2486741.333964615 6.52274367791429 686.057820562688 25.551529447891 -80.286604374551 1776690.4166663 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2143-May-26 14:46 00:10 Jupiter 1.7693966598242 1.76939496533277 1.76939835447736 3.86191363511671 3.73590189683506 2503920.115123158 10.250503206173 926.080082881234 26.0637047122701 -85.5248087757702 1688125.49417541 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
2190-Jun-10 00:32 00:14 Jupiter 1.75295580049454 1.75295439746142 1.7529572035994 3.7392582252577 3.60772208037874 2521101.522018063 14.4598291273703 747.348759862685 48.9031391648825 84.687686521919 1513102.81839775 T 12 CATAB v2.0f-lin.ifort 2020-Nov-12 08:52:23 2020-Nov-12 08:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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