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JPL Small-Body Database Browser
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13521 (1991 BK)
Classification: Main-belt Asteroid          SPK-ID: 2013521
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2793283888887044 2.885e-08  
a 2.630093482133814 1.1184e-08 au
q 1.895433707142693 7.5468e-08 au
i 5.733483217175113 3.5709e-06 deg
node 67.04921077158481 4.4814e-05 deg
peri 48.06058312110062 4.5866e-05 deg
M 319.3403254685405 1.2216e-05 deg
tp 2459176.461072969422
(2020-Nov-22.96107297)		 5.3671e-05 TDB
period 1557.956058403256
4.27		 9.9377e-06
2.721e-08		 d
yr
n .2310719856688146 1.4739e-09 deg/d
Q 3.364753257124935 1.4308e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1441  
   data-arc span      16722 days (45.78 yr)  
   first obs. used      1974-02-17  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50892  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:35:18  

Additional Information
 Earth MOID = .91746 au 
 Jupiter MOID = 1.78172 au 
 T_jup = 3.337 
[ 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 13.6   n/a MPO416857  

13521 (1991 BK)          Discovered 1991-Jan-19 by Hioki, T., Hayakawa, S. at Okutama
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 BK = 1974 DV1 = 1994 UU2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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