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390187 (2012 WH18)
Classification: Main-belt Asteroid          SPK-ID: 2390187
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 .1636737538057273 6.2821e-08  
a 3.116367613343682 4.6459e-08 au
q 2.606300027829126 1.8774e-07 au
i 8.626104547136634 9.0157e-06 deg
node 45.16442333712037 4.3974e-05 deg
peri 102.6892196182126 5.1811e-05 deg
M 63.90354970581289 2.6771e-05 deg
tp 2458643.807537114721
(2019-Jun-09.30753711)
0.00014634 TDB
period 2009.423376789658
5.50
4.4935e-05
1.23e-07
d
yr
n .1791558733506682 4.0063e-09 deg/d
Q 3.626435198858237 5.4063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      4911 days (13.45 yr)  
   first obs. used      2006-11-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66343  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:15:27  

Additional Information
 Earth MOID = 1.63454 au 
 Jupiter MOID = 1.46066 au 
 T_jup = 3.179 
[ 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 16.3   n/a MPO427945  

390187 (2012 WH18)          Discovered 2007-Nov-17 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-03-21

[ 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
1941-Feb-12 19:31 00:05 Jupiter 1.92780138081991 1.92779722194544 1.92780553970994 3.75765404798179 3.63884863047973 2430038.313221091 5.17276189163022 358.330344053469 45.3735174288612 -60.4729093718703 1064659.75263089 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
1951-Mar-10 05:43 00:05 Jupiter 1.45657529487801 1.45657428113423 1.45657630862411 1.69069142538356 1.30207702029945 2433715.738000495 4.72050223969594 588.305419659616 385.62577487807 -71.5324499138006 411459.965402781 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
1961-Feb-06 17:03 00:04 Jupiter 1.82487551972637 1.82487303122937 1.82487800821642 2.03616076581025 1.79377910930117 2437337.210380376 4.05721821285403 157.040005976345 34.3866251355341 61.2931805648269 505230.469350501 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2023-Jan-02 16:56 < 00:01 Jupiter 1.52326571016544 1.52326479341652 1.52326662692648 2.33326552070272 2.08134909360035 2459947.205626611 0.626442062909877 431.413634705045 26.6380534467069 -83.140468213881 958292.120843768 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2032-Dec-24 19:30 00:02 Jupiter 1.64333567408455 1.64333434766751 1.64333700052606 1.19266597982212 0.625775169019278 2463591.312168758 1.5102763705512 1563.01545329986 504.859081873898 33.0243251993866 1209817.96589669 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2094-Oct-31 21:01 00:05 Jupiter 1.69729943012164 1.69729587816568 1.69730298213404 2.95388092794121 2.77980753550269 2486182.375807318 5.47604958793194 566.408501469937 28.611697312717 -76.4458171766323 849037.294113328 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2104-Nov-18 06:42 00:07 Jupiter 1.49699913432651 1.49699655243779 1.49700171660378 1.36471456691287 0.854879282196146 2489851.779239727 6.69698826609996 2063.66392445117 664.253068005707 -51.5914515980485 637284.328298863 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2166-Aug-20 23:13 00:10 Jupiter 1.91866228857078 1.91865466612049 1.91866991108159 3.57568000582566 3.45000829333642 2512407.467476939 10.0814286502423 672.074102684306 39.1472140403596 -60.5759239273934 1159645.50456029 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2176-Sep-17 22:26 00:11 Jupiter 1.43392464734179 1.43392383081735 1.43392546388033 1.92439849017934 1.58805070718622 2516088.434425882 11.1092021129687 688.102382173654 278.530032119083 -67.8183102946387 388276.265465366 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15
2186-Aug-22 11:06 00:13 Jupiter 1.85588541385685 1.85587734382929 1.85589348383999 2.02937443289945 1.7904090187796 2519713.962821542 12.9135943802349 486.626954929159 16.8347859515527 66.7279001135552 541885.320279628 T 12 CATAB v2.0f-lin.ifort 2020-May-22 01:15:28 2020-May-22 01:15

Alternate Designations
 2012 WH18 = 2009 HW24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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