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JPL Small-Body Database Browser
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8678 Bal (1992 ER6)
Classification: Main-belt Asteroid          SPK-ID: 2008678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1107928106943017 3.3328e-08  
a 3.162768000990221 2.0488e-08 au
q 2.812356044586517 1.0591e-07 au
i 5.767029004916004 4.7575e-06 deg
node 57.40818740779455 4.142e-05 deg
peri 221.5707237341759 4.6997e-05 deg
M 192.4874918703788 2.2757e-05 deg
tp 2459556.469797765740
(2021-Dec-07.96979777)
0.00013094 TDB
period 2054.468236660653
5.62
1.9963e-05
5.466e-08
d
yr
n .1752278246876897 1.7026e-09 deg/d
Q 3.513179957393926 2.2758e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1232  
   data-arc span      10105 days (27.67 yr)  
   first obs. used      1992-03-01  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56526  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:12:12  

Additional Information
 Earth MOID = 1.79883 au 
 Jupiter MOID = 1.60659 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456452.5 (2013-Jun-09.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1072674357583095 3.3272e-08  
q 2.832089210001851 1.0472e-07 au
tp 2455430.915451428474
(2010-Aug-22.41545143)
0.00013718 TDB
node 57.62706802255127 4.1209e-05 deg
peri 219.5432576728286 4.7339e-05 deg
i 5.777319408896736 4.7631e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1232  
   data-arc span      10105 days (27.67 yr)  
   first obs. used      1992-03-01  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56526  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:12:12  

Additional Information
 Jupiter MOID = 1.60659 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.106994031247969E-15 -3.428661337756233E-15 -8.936078122753461E-13 -6.189202005483112E-15 -1.356599198563293E-13 1.017543585059776E-15
q -3.428661337756233E-15 1.096568211028057E-14 2.38717497421564E-12 1.959372002303179E-14 3.81557684826542E-13 -3.45506454233212E-15
tp -8.936078122753461E-13 2.38717497421564E-12 1.881915478981201E-8 1.143549970495793E-11 3.210151599127749E-9 3.212505927799799E-13
node -6.189202005483112E-15 1.959372002303179E-14 1.143549970495793E-11 1.698219059545092E-9 -1.688490711861553E-9 -5.586499196300287E-11
peri -1.356599198563293E-13 3.81557684826542E-13 3.210151599127749E-9 -1.688490711861553E-9 2.241027537281369E-9 5.569271834328243E-11
i 1.017543585059776E-15 -3.45506454233212E-15 3.212505927799799E-13 -5.586499196300287E-11 5.569271834328243E-11 2.268740215820826E-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 13.6   n/a MPO337330  
diameter diameter 9.906 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8678 Bäl           Discovered 1992 Mar. 1 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets.
Bäl is a small and typical country parish on the Swedish island of Gotland, often associated on Gotland with the well-known song "Farewell to Bäl".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1992 ER6 = 1995 WY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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