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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03785910597183324 6.5855e-08  
a 3.109710628740791 2.6374e-08 au
q 2.991979764505557 2.0548e-07 au
i 21.22897733443374 7.3549e-06 deg
node 329.6399519437612 1.5146e-05 deg
peri 234.5791387112188 8.6233e-05 deg
M 255.1374509794553 8.827e-05 deg
tp 2459183.940138405444
(2020-Nov-30.44013841)
0.00049269 TDB
period 2002.988214455944
5.48
2.5482e-05
6.977e-08
d
yr
n .1797314619236459 2.2865e-09 deg/d
Q 3.227441492976024 2.7373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1998-01-25  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51421  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:14:18  

Additional Information
 Earth MOID = 2.02969 au 
 Jupiter MOID = 1.83181 au 
 T_jup = 3.113 
[ 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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