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388 Charybdis (A894 ED)
Classification: Main-belt Asteroid          SPK-ID: 2000388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06579768955894127 3.5043e-08  
a 3.003805931234802 1.0803e-08 au
q 2.806162441076108 1.0825e-07 au
i 6.446007498618625 4.1147e-06 deg
node 354.2607783463909 3.5074e-05 deg
peri 332.4107547210419 4.8602e-05 deg
M 276.5920915426904 3.478e-05 deg
tp 2459441.065984466393
(2021-Aug-14.56598447)
0.00018421 TDB
period 1901.543358913971
5.21
1.0258e-05
2.808e-08
d
yr
n .1893199007597738 1.0213e-09 deg/d
Q 3.201449421393496 1.1513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2940  
   data-arc span      46255 days (126.64 yr)  
   first obs. used      1894-03-08  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:09  

Additional Information
 Earth MOID = 1.79685 au 
 Jupiter MOID = 2.07587 au 
 T_jup = 3.239 
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Orbital Elements at Epoch 2455871.5 (2011-Nov-06.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06101905279406444 3.5343e-08  
q 2.824892083597033 1.0829e-07 au
tp 2455646.213379757655
(2011-Mar-25.71337976)
0.00019425 TDB
node 354.6005342576046 3.4955e-05 deg
peri 334.288207376629 5.0206e-05 deg
i 6.454533880343917 4.1205e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2940  
   data-arc span      46255 days (126.64 yr)  
   first obs. used      1894-03-08  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:09  

Additional Information
 Jupiter MOID = 2.07587 au 
 T_jup = 3.239 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.249159173560417E-15 -3.811269149177281E-15 1.040797902782043E-12 -5.964339945301825E-16 1.715584340038721E-13 5.903783760489912E-16
q -3.811269149177281E-15 1.172758220178845E-14 -3.091501138973519E-12 3.260501730338804E-15 -5.078004684290577E-13 -1.871086334438266E-15
tp 1.040797902782043E-12 -3.091501138973519E-12 3.77319261384419E-8 -1.97651013774028E-11 7.023377233095918E-9 -3.987736069771045E-12
node -5.964339945301825E-16 3.260501730338804E-15 -1.97651013774028E-11 1.221883564580971E-9 -1.216890843937043E-9 2.108549067592282E-11
peri 1.715584340038721E-13 -5.078004684290577E-13 7.023377233095918E-9 -1.216890843937043E-9 2.520685466248032E-9 -2.170254375611913E-11
i 5.903783760489912E-16 -1.871086334438266E-15 -3.987736069771045E-12 2.108549067592282E-11 -2.170254375611913E-11 1.697887059544349E-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 8.6   n/a MPO473766 IRAS observations used: 15
magnitude slope G 0.07   n/a PDS3 (MPC 17258) Fit
diameter diameter 125.754 km 1.887 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.516 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.042   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.719   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.74, mean=6.31, max.=7.26) deg.
U-B UB 0.280   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.74, mean=6.31, max.=7.26) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

388 Charybdis (A894 ED)          Discovered 1894-Mar-07 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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