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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 99 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06579769065224426 3.5912e-08  
a 3.003805931486654 1.0888e-08 au
q 2.806162438027318 1.1052e-07 au
i 6.446007388356398 4.2032e-06 deg
node 354.2607783477836 3.5105e-05 deg
peri 332.4107553232521 4.8689e-05 deg
M 276.5920907697542 3.4977e-05 deg
tp 2459441.065988604501
(2021-Aug-14.56598860)
0.00018528 TDB
period 1901.543359153122
5.21
1.0339e-05
2.831e-08
d
yr
n .1893199007359637 1.0294e-09 deg/d
Q 3.201449424945989 1.1605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2819  
   data-arc span      46122 days (126.28 yr)  
   first obs. used      1894-03-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:13:03  

Additional Information
 Earth MOID = 1.79685 au 
 Jupiter MOID = 2.07587 au 
 T_jup = 3.239 
[ 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 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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