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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06901766585412919 4.3643e-08  
a 1.907887758766668 5.8261e-09 au
q 1.776209798944927 8.4058e-08 au
i 22.39829837229915 5.8387e-06 deg
node 186.6461972245174 8.7146e-06 deg
peri 146.6991117222386 3.6105e-05 deg
M 333.4109889679758 3.4663e-05 deg
tp 2459271.593082100039
(2021-Feb-26.09308210)
9.2706e-05 TDB
period 962.5596651635135
2.64
4.409e-06
1.207e-08
d
yr
n .3740027896752203 1.7131e-09 deg/d
Q 2.03956571858841 6.2282e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      21934 days (60.05 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-10-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4516  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:11:00  

Additional Information
 Earth MOID = .785345 au 
 Jupiter MOID = 3.14806 au 
 T_jup = 3.844 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.96   n/a E2021B10  
rotation period rot_per 4.14594 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

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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