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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1725409565045577 3.5731e-08  
a 3.048383262740012 1.6298e-08 au
q 2.522412298794366 1.1312e-07 au
i 2.570550865171311 3.692e-06 deg
node 151.4112064293218 8.6082e-05 deg
peri 237.7178374011659 8.6755e-05 deg
M 217.8101078834729 1.3131e-05 deg
tp 2459768.336942922808
(2022-Jul-07.83694292)
7.4878e-05 TDB
period 1944.029180538927
5.32
1.559e-05
4.268e-08
d
yr
n .1851824054925967 1.4851e-09 deg/d
Q 3.574354226685658 1.911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2165  
   data-arc span      11282 days (30.89 yr)  
   first obs. used      1989-07-29  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:50:52  

Additional Information
 Earth MOID = 1.52863 au 
 Jupiter MOID = 1.87271 au 
 T_jup = 3.213 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456619.5 (2013-Nov-23.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735985779869826 3.5715e-08  
q 2.518013144679036 1.1303e-07 au
tp 2455884.213067843467
(2011-Nov-18.71306784)
5.8757e-05 TDB
node 151.4374970354193 8.6117e-05 deg
peri 238.2551010394033 8.6782e-05 deg
i 2.570488127560197 3.6923e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2165  
   data-arc span      11282 days (30.89 yr)  
   first obs. used      1989-07-29  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:50:52  

Additional Information
 Jupiter MOID = 1.87271 au 
 T_jup = 3.213 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.275561654123789E-15 -4.009518486849329E-15 -1.782745724644352E-13 -5.221901995514194E-16 -4.2158757605534E-14 4.294214986384532E-17
q -4.009518486849329E-15 1.277512734628312E-14 7.792598256995093E-13 2.09264987605483E-15 1.824245976332455E-13 2.032366962972244E-17
tp -1.782745724644352E-13 7.792598256995093E-13 3.452389780261452E-9 -6.8433702852259E-12 6.508971132610743E-10 1.578831544076371E-13
node -5.221901995514194E-16 2.09264987605483E-15 -6.8433702852259E-12 7.416115821485562E-9 -7.409464960555653E-9 3.370077195634292E-11
peri -4.2158757605534E-14 1.824245976332455E-13 6.508971132610743E-10 -7.409464960555653E-9 7.531037869918373E-9 -3.362618520324548E-11
i 4.294214986384532E-17 2.032366962972244E-17 1.578831544076371E-13 3.370077195634292E-11 -3.362618520324548E-11 1.363313734174681E-11

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

[ 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
1934-May-21 11:45 00:02 Jupiter 1.89654662391541 1.89654622370535 1.89654702412591 2.05868518951543 1.82892278774008 2427578.989603699 2.03086000307643 110.396133930792 9.32210595833668 -87.4757456707044 3103452.30084911 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
1982-Dec-18 11:24 < 00:01 Jupiter 1.89881454003665 1.89881418994972 1.89881489012348 2.13600616498649 1.9158191582189 2445321.975336534 0.823731378021723 47.7350006797812 4.5200191308659 -85.3593679985099 3112359.86156415 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2031-Jul-17 15:18 < 00:01 Jupiter 1.99888375147007 1.99888343545156 1.99888406748857 2.82553025241597 2.671352781587 2463065.137307282 0.44780099759589 35.4587737793388 8.90660364550509 -85.3545136676548 4121623.01871798 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2041-Jan-20 22:33 < 00:01 Jupiter 1.90526001432843 1.90525967673053 1.90526035192623 2.0907776999952 1.86606813013089 2466540.439600976 0.700415036899084 53.4021062603574 8.91338529475714 -87.4139724952767 3130603.21452594 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2089-Aug-20 10:31 00:02 Jupiter 1.8823002698551 1.88229993563119 1.88230060407889 2.06187730920025 1.83066966764814 2484283.938329611 1.92469305410338 73.2528767599535 11.1209206615247 86.7315862311541 2978059.97385205 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2138-Mar-22 02:10 00:03 Jupiter 1.96885001577038 1.96884935659608 1.96885067494435 2.65804419433067 2.49093864483173 2502028.590543173 3.13344228756178 36.2944230215226 7.79268533705699 -85.4094205690296 1383315.24673465 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2147-Sep-25 10:15 00:03 Jupiter 1.92282767928677 1.92282702301099 1.92282833556637 2.1566092683294 1.94163486113025 2505502.927228654 3.39573275286331 176.016509440558 7.57679603862399 89.1657857606924 3183871.09975418 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51
2196-Apr-24 01:46 00:05 Jupiter 1.87680177625518 1.87680144327495 1.87680210923553 2.02313953893488 1.7861887593245 2523246.573646761 4.65220752875055 164.010177144543 12.5337055966205 84.7538938773917 2993047.84375502 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:09 2020-Jun-23 16:51

Alternate Designations
 1992 EN9 = 1990 WR15 = 1997 AS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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