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27789 Astrakhan (1993 BB7)
Classification: Main-belt Asteroid          SPK-ID: 2027789
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05125599966422367 3.6548e-08  
a 3.070136424909236 1.5803e-08 au
q 2.912773513344968 1.1466e-07 au
i 10.38392004747117 4.4307e-06 deg
node 152.1739035045725 1.8878e-05 deg
peri 331.387976507663 4.725e-05 deg
M 38.21366211667657 4.1323e-05 deg
tp 2458791.930357483075
(2019-Nov-04.43035748)
0.00022587 TDB
period 1964.875051148933
5.38
1.5171e-05
4.154e-08
d
yr
n .183217757174684 1.4146e-09 deg/d
Q 3.227499336473505 1.6613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2305  
   data-arc span      15799 days (43.26 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42977  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:36:04  

Additional Information
 Earth MOID = 1.93173 au 
 Jupiter MOID = 1.79729 au 
 T_jup = 3.204 
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Orbital Elements at Epoch 2457201.5 (2015-Jun-28.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05248391391437369 3.6719e-08  
q 2.908488506072252 1.1551e-07 au
tp 2456831.282883780051
(2014-Jun-22.78288378)
0.00022268 TDB
node 152.1967728970659 1.8878e-05 deg
peri 332.1500600806543 4.6102e-05 deg
i 10.3844995721782 4.4311e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2305  
   data-arc span      15799 days (43.26 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42977  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:36:04  

Additional Information
 Jupiter MOID = 1.79729 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.348295743085475E-15 -4.206450022208607E-15 2.575005786972583E-12 -2.829592393808976E-15 4.957788618533274E-13 -6.164758905324623E-16
q -4.206450022208607E-15 1.334318178203341E-14 -8.852681004775564E-12 8.408272501766328E-15 -1.69288537575778E-12 1.683084781441768E-15
tp 2.575005786972583E-12 -8.852681004775564E-12 4.958841675465249E-8 -1.464641234285108E-11 9.37706930476045E-9 8.293047666496954E-12
node -2.829592393808976E-15 8.408272501766328E-15 -1.464641234285108E-11 3.563605608095084E-10 -3.530076458636763E-10 5.826771577773854E-12
peri 4.957788618533274E-13 -1.69288537575778E-12 9.37706930476045E-9 -3.530076458636763E-10 2.125363665438411E-9 -4.19710531446919E-12
i -6.164758905324623E-16 1.683084781441768E-15 8.293047666496954E-12 5.826771577773854E-12 -4.19710531446919E-12 1.963508883391474E-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 12.7   n/a MPO502365  
diameter diameter 9.355 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.609 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.199   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27789 Astrakhan           Discovered 1993 Jan. 23 by E. W. Elst at the European Southern Observatory.
The Astrakhan Khanate, a Tatar feudal state, was established around 1460, after the collapse of the Golden Horde. Its territory included the lower Volga valley, the Volga delta and the steppeland on the right bank of the Volga river.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

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Alternate Designations
 1993 BB7 = 1977 EK2 = 1999 GO17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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