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JPL Small-Body Database Browser
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8681 Burs (1992 EN9)
Classification: Main-belt Asteroid          SPK-ID: 2008681
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1725409177021607 3.7146e-08  
a 3.048383258557068 1.7028e-08 au
q 2.522412413617728 1.1667e-07 au
i 2.570551951999943 4.4367e-06 deg
node 151.4112426975359 8.6789e-05 deg
peri 237.7177922769937 8.7641e-05 deg
M 217.8101152536807 1.3552e-05 deg
tp 2459768.336901542667
(2022-Jul-07.83690154)
7.6788e-05 TDB
period 1944.029176537577
5.32
1.6289e-05
4.46e-08
d
yr
n .1851824058737533 1.5516e-09 deg/d
Q 3.574354103496407 1.9966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1926  
   data-arc span      10878 days (29.78 yr)  
   first obs. used      1989-07-29  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51756  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:36:49  

Additional Information
 Earth MOID = 1.52863 au 
 Jupiter MOID = 1.87271 au 
 T_jup = 3.213 
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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 13.0   n/a MPO384834  
diameter diameter 12.610 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8681 Burs           Discovered 1992 Mar. 2 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets.
Burs is a small parish on the Swedish island of Gotland. Gustav Edman (1881-1912), well known for his height (2.46 meters) and strength, was born in Burs. Burs also has the remains of the largest house ( 67 x 11 meters) in Sweden from the Roman Iron Age.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

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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
1934-May-21 11:45 00:02 Jupiter 1.8965467156587 1.89654630472373 1.8965471265941 2.05868574925722 1.82892342961325 2427578.989769464 2.11851616132013 114.36317589063 10.0276307231544 -87.7878779256803 2893538.98605321 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
1982-Dec-18 11:25 < 00:01 Jupiter 1.89881470824751 1.89881435410197 1.89881506239295 2.13600701832494 1.91582013025901 2445321.975417408 0.844800232435055 53.555484147497 4.64359694573034 -85.5149933571722 3088405.198323 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2031-Jul-17 15:18 < 00:01 Jupiter 1.99888387479081 1.99888351351165 1.99888423606997 2.82553087956046 2.67135345471363 2463065.137288559 0.510837931495527 41.8279746755305 9.96999628138167 -85.513546267336 3578527.9339958 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2041-Jan-20 22:33 < 00:01 Jupiter 1.905260117211 1.90525973291196 1.90526050150994 2.09077829807454 1.8660688130949 2466540.439593250 0.773047564964982 58.0615011236506 9.44418943189233 -88.083965081348 2866923.08698336 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2089-Aug-20 10:31 00:02 Jupiter 1.88230041483101 1.88230007502144 1.88230075464058 2.06187797018982 1.83067043105078 2484283.938215921 2.0674934983478 81.145438760287 11.5967396729189 87.2015774163165 2943235.70181162 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2138-Mar-22 02:10 00:03 Jupiter 1.96885009111036 1.96884934537358 1.96885083684681 2.65804445492333 2.49093892951529 2502028.590345335 3.34406582975506 43.0329504103172 9.31756793709069 -85.512878541242 1251997.50950057 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2147-Sep-25 10:15 00:04 Jupiter 1.92282781562474 1.92282706300503 1.92282856824883 2.15660999653172 1.94163568604438 2505502.927041413 3.61756812707938 188.435291903366 7.86053190465475 89.130468749306 2853579.54337511 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36
2196-Apr-24 01:46 00:05 Jupiter 1.87680191897675 1.8768015812131 1.8768022567405 2.02314015726626 1.78618947889606 2523246.573357981 4.94908804900097 176.121726992209 13.1907570132684 84.9962623875119 2946594.51348792 T 24 CATAB v2.0e-lin.ifort 2019-May-30 01:36:57 2019-May-30 01:36

Alternate Designations
 1992 EN9 = 1990 WR15 = 1997 AS4 
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