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JPL Small-Body Database Browser
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312574 (2009 HR65)
Classification: Main-belt Asteroid          SPK-ID: 2312574
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08846117389918126 9.1886e-08  
a 2.811126905252999 4.4782e-08 au
q 2.562451319234746 2.4654e-07 au
i 11.61117773478541 1.0773e-05 deg
node 69.03434052651966 4.8772e-05 deg
peri 163.7273446475737 7.9916e-05 deg
M 120.2117635723151 6.0732e-05 deg
tp 2458425.638038604982
(2018-Nov-03.13803860)
0.00029201 TDB
period 1721.547874786084
4.71
4.1137e-05
1.126e-07
d
yr
n .2091141380803788 4.9969e-09 deg/d
Q 3.059802491271252 4.8744e-08 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   data-arc span      5559 days (15.22 yr)  
   first obs. used      2004-04-12  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55501  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:03  

Additional Information
 Earth MOID = 1.55266 au 
 Jupiter MOID = 1.94898 au 
 T_jup = 3.285 
[ 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 16.5   n/a MPO476404  

312574 (2009 HR65)          Discovered 2009-Apr-23 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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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-Mar-01 22:37 00:07 Jupiter 1.95356881799325 1.95356800093645 1.95356963504994 3.69404799644537 3.57474986417681 2421289.442660748 7.18104429900928 271.552408263971 31.2783418871586 -88.3900211508905 1062010.79183531 T 5 CATAB v2.0f-lin.ifort 2019-Sep-24 06:02:04 2019-Sep-24 06:02
1940-Sep-12 19:25 00:05 Jupiter 1.95383143447001 1.95383065188211 1.95383221705791 3.5997832922024 3.47726937369895 2429885.309245839 5.3078963698088 328.191700233599 35.2922551849226 -87.6283956743532 1482631.11478524 T 5 CATAB v2.0f-lin.ifort 2019-Sep-24 06:02:04 2019-Sep-24 06:02
1964-Mar-26 03:00 00:04 Jupiter 1.97035996852017 1.97035913150803 1.97036080553244 3.53025320783916 3.40630642722431 2438480.625125019 3.55836142232461 350.145746777717 37.7413891679643 -87.744807163861 1632995.14928453 T 5 CATAB v2.0f-lin.ifort 2019-Sep-24 06:02:04 2019-Sep-24 06:02
1987-Sep-30 13:11 00:02 Jupiter 1.99421537306111 1.9942144858279 1.99421626029421 3.44974480180495 3.32434350223297 2447069.049074464 1.89771643036105 307.261672043422 39.605314986582 -88.720924574744 1612375.62711766 T 5 CATAB v2.0f-lin.ifort 2019-Sep-24 06:02:04 2019-Sep-24 06:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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