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JPL Small-Body Database Browser
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52660 (1998 BJ8)
Classification: Main-belt Asteroid          SPK-ID: 2052660
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1691255206944554 4.3193e-08  
a 2.9845730070182 1.5888e-08 au
q 2.479805543155631 1.295e-07 au
i 9.387910122799203 4.9838e-06 deg
node 128.9200973700217 3.3496e-05 deg
peri 332.2362564165721 3.8214e-05 deg
M 154.52893828284 1.6997e-05 deg
tp 2458192.094876956923
(2018-Mar-14.59487696)
8.7226e-05 TDB
period 1883.309673446616
5.16
1.5038e-05
4.117e-08
d
yr
n .1911528438874152 1.5264e-09 deg/d
Q 3.48934047088077 1.8575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      10174 days (27.85 yr)  
   first obs. used      1991-09-11  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51687  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:32:42  

Additional Information
 Earth MOID = 1.50096 au 
 Jupiter MOID = 1.67199 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456787.5 (2014-May-10.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714792381907923 4.3348e-08  
q 2.468871330092867 1.3037e-07 au
tp 2456311.267316411623
(2013-Jan-18.76731641)
8.4045e-05 TDB
node 128.9763967272677 3.3545e-05 deg
peri 331.7684987260097 3.806e-05 deg
i 9.386441343564845 4.9834e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      10174 days (27.85 yr)  
   first obs. used      1991-09-11  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51687  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:32:42  

Additional Information
 Jupiter MOID = 1.67199 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.879014723272085E-15 -5.620895573897295E-15 -4.665665038656657E-13 -1.337064599474953E-14 -1.012976099804853E-13 -1.770376351960886E-15
q -5.620895573897295E-15 1.699665705760746E-14 1.38705577544395E-12 4.439938305615704E-14 3.071099190659631E-13 5.365886204545316E-15
tp -4.665665038656657E-13 1.38705577544395E-12 7.063604637510427E-9 6.614798437352082E-12 1.55106869762083E-9 -1.548150705378879E-12
node -1.337064599474953E-14 4.439938305615704E-14 6.614798437352082E-12 1.125238510846634E-9 -1.107460433217905E-9 6.491939068755726E-12
peri -1.012976099804853E-13 3.071099190659631E-13 1.55106869762083E-9 -1.107460433217905E-9 1.448572931705877E-9 -6.820556129028403E-12
i -1.770376351960886E-15 5.365886204545316E-15 -1.548150705378879E-12 6.491939068755726E-12 -6.820556129028403E-12 2.483399133247793E-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 14.4   n/a MPO474411  
diameter diameter 7.703 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52660 (1998 BJ8)          Discovered 1998-Jan-25 by Kobayashi, T. at Oizumi
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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