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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2793284265329534 2.8682e-08  
a 2.630093486818934 1.1132e-08 au
q 1.895433611511232 7.5105e-08 au
i 5.733482588904169 3.5461e-06 deg
node 67.04920492229614 4.4716e-05 deg
peri 48.06058887230783 4.5771e-05 deg
M 319.3403261947846 1.2194e-05 deg
tp 2459176.461070296660
(2020-Nov-22.96107030)
5.3573e-05 TDB
period 1557.956062566156
4.27
9.8909e-06
2.708e-08
d
yr
n .2310719850513841 1.467e-09 deg/d
Q 3.364753362126636 1.4241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      16776 days (45.93 yr)  
   first obs. used      1974-02-17  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50511  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:40:01  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1937-Dec-17 21:04 00:01 Jupiter 1.78066717189298 1.78066679265691 1.78066755113036 0.681885547173908 n/a 2428885.378022999 1.43021714184928 104.061399073662 12.5779258661261 -82.1426296673641 20977073.5967754 F 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
1984-May-27 16:51 < 00:01 Jupiter 1.95843862219857 1.95843808548191 1.95843915891657 1.31707599266722 0.932572466455754 2445848.201759032 0.608188135474725 240.800231844312 142.003718796104 -24.5581755086289 1744548.6115758 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
1997-Dec-16 03:22 < 00:01 Jupiter 1.87739009540092 1.87738953675537 1.87739065406301 1.01106771349508 0.346291014831571 2450798.640143855 0.375976224975991 5872.92772492528 781.984480329284 7.26817312135487 1332223.02687147 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
2044-May-20 19:44 < 00:01 Jupiter 1.80004682752927 1.8000465072388 1.80004714782 0.779118767080548 n/a 2467756.322364725 0.532449539435818 85.2565894184881 14.6485877349997 -85.6538607646828 18326683.271294 F 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
2104-May-14 00:10 00:02 Jupiter 1.79659407431283 1.79659363798155 1.79659451064461 0.654217992273551 n/a 2489663.506987037 1.66473537226329 73.3007787363838 15.8557684865377 -77.9830599163191 16592309.2563363 F 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
2150-Oct-20 19:33 00:03 Jupiter 1.87533322208165 1.8753318694357 1.87533457472025 1.00393851907093 0.323361106152261 2506624.314373527 2.54939272637674 12417.2695259928 457.796722934698 -2.21996880716098 804256.628466543 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40
2164-May-14 15:05 00:03 Jupiter 1.94545817385372 1.94545658659322 1.94545976110658 1.42351580255912 1.0750014202464 2511579.128511748 2.95605129489913 589.960520228441 156.987503574411 15.9158360034658 544225.522185298 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 20:40:19 2020-Feb-22 20:40

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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