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27228 (1999 JG11)
Classification: Main-belt Asteroid          SPK-ID: 2027228
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600536198376315 3.5776e-08  
a 2.75645721477717 1.3386e-08 au
q 2.315276259624528 9.7333e-08 au
i 11.32375302294699 5.217e-06 deg
node 218.1576271084363 2.0605e-05 deg
peri 69.01667432137835 2.6426e-05 deg
M 180.1026875488549 1.7363e-05 deg
tp 2459835.809624026623
(2022-Sep-13.30962403)
8.2537e-05 TDB
period 1671.572857605912
4.58
1.2176e-05
3.334e-08
d
yr
n .2153660238989554 1.5688e-09 deg/d
Q 3.197638169929811 1.5529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      9417 days (25.78 yr)  
   first obs. used      1994-04-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54966  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:59:40  

Additional Information
 Earth MOID = 1.32814 au 
 Jupiter MOID = 2.01252 au 
 T_jup = 3.297 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456793.5 (2014-May-16.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620716836351773 3.5747e-08  
q 2.30804856924507 9.7409e-08 au
tp 2456494.042310548704
(2013-Jul-20.54231055)
7.6399e-05 TDB
node 218.2350034697149 2.064e-05 deg
peri 68.98014005882517 2.6325e-05 deg
i 11.31682347729626 5.2156e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      9417 days (25.78 yr)  
   first obs. used      1994-04-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54966  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:59:40  

Additional Information
 Jupiter MOID = 2.01252 au 
 T_jup = 3.297 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.277881311195251E-15 -3.459860482453278E-15 2.387795352821352E-13 -4.563457441751018E-15 2.55415483415392E-14 -9.155202286925373E-16
q -3.459860482453278E-15 9.488585852906804E-15 -6.184683082708998E-13 1.210519835109363E-14 -5.925887820539942E-14 3.046189654722399E-15
tp 2.387795352821352E-13 -6.184683082708998E-13 5.836882126629411E-9 1.710984511244741E-12 1.261861210156755E-9 -7.097542351316267E-12
node -4.563457441751018E-15 1.210519835109363E-14 1.710984511244741E-12 4.260045601553967E-10 -4.170125536718437E-10 -1.693904126941711E-11
peri 2.55415483415392E-14 -5.925887820539942E-14 1.261861210156755E-9 -4.170125536718437E-10 6.929980416400533E-10 1.511668511833194E-11
i -9.155202286925373E-16 3.046189654722399E-15 -7.097542351316267E-12 -1.693904126941711E-11 1.511668511833194E-11 2.720213975562836E-11

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 14.5   n/a MPO459047  

27228 (1999 JG11)          Discovered 1999-May-09 by Korlevic, K. at Visnjan
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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