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531224 (2012 HK85)
Classification: TransNeptunian Object          SPK-ID: 2531224
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3425387085709564 4.1302e-05  
a 58.09342754157924 0.0038915 au
q 38.19417989502626 0.00070698 au
i 4.808407025235452 0.00012003 deg
node 75.89570245319686 0.0011454 deg
peri 174.3453094453208 0.0056901 deg
M 348.5751632094113 0.0027886 deg
tp 2464133.088328331321
(2034-Jun-19.58832833)
1.0491 TDB
period 161729.3824032008
442.79
16.251
0.04449
d
yr
n .002225940609248721 2.2366e-07 deg/d
Q 77.99267518813222 0.0052245 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      6671 days (18.26 yr)  
   first obs. used      2000-02-12  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .69704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 11:13:54  

Additional Information
 Earth MOID = 37.1802 au 
 Jupiter MOID = 32.8512 au 
 T_jup = 6.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457124.5 (2015-Apr-12.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3392333550828751 4.1173e-05  
q 38.27581176234553 0.00069494 au
tp 2463963.202327127371
(2033-Dec-31.70232713)
1.0737 TDB
node 75.83999423372128 0.0011427 deg
peri 173.5044618495384 0.0057623 deg
i 4.814377162064604 0.00012009 deg
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      6671 days (18.26 yr)  
   first obs. used      2000-02-12  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .69704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 11:13:54  

Additional Information
 Jupiter MOID = 32.8512 au 
 T_jup = 6.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.695212148680836E-9 2.857693672763121E-9 4.280612388728293E-6 3.835521897428297E-10 3.133174695798148E-8 -1.258883951998192E-11
q 2.857693672763121E-9 4.829452516065966E-7 -.0007274876649443177 1.606113680113711E-8 -3.801633925143008E-6 -1.339600724655384E-9
tp 4.280612388728293E-6 -.0007274876649443177 1.152846179318519 -2.247888123139112E-5 .006059879275798155 1.981982141553239E-6
node 3.835521897428297E-10 1.606113680113711E-8 -2.247888123139112E-5 1.305673557900356E-6 -1.41659818017904E-6 -1.366570839926589E-7
peri 3.133174695798148E-8 -3.801633925143008E-6 .006059879275798155 -1.41659818017904E-6 3.320444043636388E-5 1.464714831353623E-7
i -1.258883951998192E-11 -1.339600724655384E-9 1.981982141553239E-6 -1.366570839926589E-7 1.464714831353623E-7 1.442077362686576E-8

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.9   n/a E2018Y78  

531224 (2012 HK85)          Discovered 2012-Apr-27 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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