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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2791988413554137 2.9474e-08  
a 2.629575173442896 1.1374e-08 au
q 1.895400831760679 7.682e-08 au
i 5.733620909127135 3.8482e-06 deg
node 67.04778499450596 4.4855e-05 deg
peri 48.10590738350303 4.5933e-05 deg
M 226.8310131182152 1.1818e-05 deg
tp 2459176.639177185696
(2020-Nov-23.13917719)		 5.3702e-05 TDB
period 1557.495544897178
4.26		 1.0105e-05
2.767e-08		 d
yr
n .2311403080281467 1.4996e-09 deg/d
Q 3.363749515125114 1.4549e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1317  
   data-arc span      16649 days (45.58 yr)  
   first obs. used      1974-02-17  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52328  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:15:15  

Additional Information
 Earth MOID = .917701 au 
 Jupiter MOID = 1.78366 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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