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324797 (2007 HG20)
Classification: Main-belt Asteroid          SPK-ID: 2324797
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03648252759355034 5.2584e-08  
a 2.98193392929132 4.0782e-08 au
q 2.873145442433805 1.5449e-07 au
i 9.245207054506471 1.1109e-05 deg
node 214.9906725433978 3.5179e-05 deg
peri 59.20752960422789 0.00015944 deg
M 144.3868996486371 0.000157 deg
tp 2458246.153739020492
(2018-May-07.65373902)
0.00081635 TDB
period 1880.812280154712
5.15
3.8584e-05
1.056e-07
d
yr
n .1914066617910359 3.9267e-09 deg/d
Q 3.090722416148834 4.227e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      5491 days (15.03 yr)  
   first obs. used      2004-11-04  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51573  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:32:49  

Additional Information
 Earth MOID = 1.8706 au 
 Jupiter MOID = 1.93673 au 
 T_jup = 3.238 
[ 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 16.0   n/a MPO494718  

324797 (2007 HG20)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

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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-Feb-11 14:58 00:06 Jupiter 1.94298632966601 1.94298545714101 1.94298720219101 4.22199182776305 4.11744314166596 2421271.123902276 5.8072990237014 438.818840188729 39.1877291508828 89.6338674423564 1575648.04073893 T 12 CATAB v2.0f-lin.ifort 2019-Dec-14 19:32:50 2019-Dec-14 19:33
2035-Jun-16 03:47 00:01 Jupiter 1.9507399269278 1.95073900775241 1.9507408461032 4.25566579107196 4.1523824248186 2464494.657550625 1.12302957144476 97.880415612459 40.4113806237249 -83.8937058727919 1566836.67320558 T 12 CATAB v2.0f-lin.ifort 2019-Dec-14 19:32:50 2019-Dec-14 19:33
2071-Nov-22 08:32 00:03 Jupiter 1.97097456390818 1.97097364690689 1.97097548091193 4.1184438612604 4.01274017317207 2477802.855369203 3.26724159471236 227.797160327887 36.0720043694581 84.1032491694768 1724911.03719964 T 12 CATAB v2.0f-lin.ifort 2019-Dec-14 19:32:50 2019-Dec-14 19:33
2153-Oct-19 10:14 00:08 Jupiter 1.97122929601949 1.97122769669091 1.97123089539535 4.29575393626135 4.1945341586798 2507718.926372994 8.04423718605404 600.204207938953 41.1565600187634 -83.7280804368382 1555904.22317265 T 12 CATAB v2.0f-lin.ifort 2019-Dec-14 19:32:50 2019-Dec-14 19:33
2190-Mar-27 14:15 00:10 Jupiter 1.95128838404029 1.95128708570181 1.95128968243544 4.17713178913961 4.07188685362039 2521027.093926361 10.1700429724453 713.017909800384 38.9282338699393 85.6706084584589 1602295.72414827 T 12 CATAB v2.0f-lin.ifort 2019-Dec-14 19:32:50 2019-Dec-14 19:33

Alternate Designations
 2007 HG20 = 2004 VM43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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