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85047 Krakatau (6255 P-L)
Classification: Inner Main-belt Asteroid          SPK-ID: 2085047
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06897389058885206 4.466e-08  
a 1.907596262453646 5.8483e-09 au
q 1.776021926559465 8.5866e-08 au
i 22.39840958849499 6.0864e-06 deg
node 186.6569846315283 8.7539e-06 deg
peri 146.8315112404491 3.6213e-05 deg
M 258.4624567505528 3.4806e-05 deg
tp 2459271.926515645878
(2021-Feb-26.42651565)		 9.3135e-05 TDB
period 962.3390768128311
2.63		 4.4255e-06
1.212e-08		 d
yr
n .3740885189784492 1.7203e-09 deg/d
Q 2.039170598347827 6.2516e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1152  
   data-arc span      21816 days (59.73 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45121  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:15:53  

Additional Information
 Earth MOID = .786669 au 
 Jupiter MOID = 3.14959 au 
 T_jup = 3.845 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457735.5 (2016-Dec-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06904336122365348 4.4643e-08  
q 1.775867804310285 8.5804e-08 au
tp 2457346.601606491053
(2015-Nov-20.10160649)		 9.2799e-05 TDB
node 186.6703010926397 8.7514e-06 deg
peri 146.6370182711062 3.622e-05 deg
i 22.40147594387358 6.0871e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1152  
   data-arc span      21816 days (59.73 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45121  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:15:53  

Additional Information
 Jupiter MOID = 3.14959 au 
 T_jup = 3.845 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.992957839372172E-15 -3.822824757580899E-15 2.323505286428154E-12 -8.846510767014979E-15 9.078872052691167E-13 1.498412057063691E-14
q -3.822824757580899E-15 7.362289561415531E-15 -4.436229413976099E-12 1.658800116602676E-14 -1.729343559754725E-12 -2.82160806272827E-14
tp 2.323505286428154E-12 -4.436229413976099E-12 8.611575852390823E-9 -2.783584627529266E-11 3.265312764142016E-9 3.548081116924445E-11
node -8.846510767014979E-15 1.658800116602676E-14 -2.783584627529266E-11 7.658652541525034E-11 -8.078485059304366E-11 1.233209008982832E-11
peri 9.078872052691167E-13 -1.729343559754725E-12 3.265312764142016E-9 -8.078485059304366E-11 1.311857871214545E-9 1.873602397291553E-12
i 1.498412057063691E-14 -2.82160806272827E-14 3.548081116924445E-11 1.233209008982832E-11 1.873602397291553E-12 3.705319927892691E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO459394  

85047 Krakatau           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
This Hungaria planet is named after the Indonesian island Krakatau that partly collapsed beneath the sea in 1883 during one of the largest volcanic eruptions in historic times.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 6255 P-L = 1999 LK5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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