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23478 (1991 BZ)
Classification: Main-belt Asteroid          SPK-ID: 2023478
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2447234857634615 4.9042e-08  
a 2.806303153613857 1.1591e-08 au
q 2.119534863752479 1.3707e-07 au
i 6.023795993896105 5.2368e-06 deg
node 288.40342852229 5.1406e-05 deg
peri 128.4284491396792 5.2572e-05 deg
M 124.7457426148971 1.039e-05 deg
tp 2458405.490999376783
(2018-Oct-13.99099938)
4.8626e-05 TDB
period 1717.118642562622
4.70
1.0639e-05
2.913e-08
d
yr
n .2096535388275427 1.2989e-09 deg/d
Q 3.493071443475235 1.4428e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      14364 days (39.33 yr)  
   first obs. used      1980-10-07  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:58:05  

Additional Information
 Earth MOID = 1.138 au 
 Jupiter MOID = 1.89776 au 
 T_jup = 3.270 
[ show covariance matrix ]

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 13.7   n/a MPO452499  
diameter diameter 7.869 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 133.406 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.114   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23478 (1991 BZ)          Discovered 1991-Jan-21 by Seki, T. at Geisei
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 BZ = 1980 TL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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