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52661 (1998 BT8)
Classification: Main-belt Asteroid          SPK-ID: 2052661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .03760362630566125 6.3712e-08  
a 3.108658259352732 2.2323e-08 au
q 2.991761435856024 2.0148e-07 au
i 21.23357940927943 7.136e-06 deg
node 329.6351992940464 1.2737e-05 deg
peri 234.9848607538076 8.2627e-05 deg
M 326.628991797761 8.3822e-05 deg
tp 2459186.077246507453
(2020-Dec-02.57724651)
0.00046622 TDB
period 2001.971541818763
5.48
2.1564e-05
5.904e-08
d
yr
n .1798227359780274 1.937e-09 deg/d
Q 3.225555082849439 2.3163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1111  
   data-arc span      8046 days (22.03 yr)  
   first obs. used      1998-01-25  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4984  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:32:42  

Additional Information
 Earth MOID = 2.02932 au 
 Jupiter MOID = 1.83248 au 
 T_jup = 3.114 
[ 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 13.3   n/a MPO385155  
diameter diameter 11.674 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52661 (1998 BT8)          Discovered 1998-Jan-25 by Kobayashi, T. at Oizumi
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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