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44029 (1998 BK4)
Classification: Main-belt Asteroid          SPK-ID: 2044029
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131894507732552 6.2112e-08  
a 2.25806378353347 1.0749e-08 au
q 1.77666840571099 1.4328e-07 au
i 3.816965764389963 5.6527e-06 deg
node 110.3763308812084 9.2293e-05 deg
peri 75.02367438532949 9.3684e-05 deg
M 70.22930011832362 1.3805e-05 deg
tp 2457158.721001434799
(2015-May-16.22100143)
4.7232e-05 JED
period 1239.375009245787
3.39
8.8498e-06
2.423e-08
d
yr
n .290468984217356 2.0741e-09 deg/d
Q 2.739459161355949 1.3041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      6430 days (17.60 yr)  
   first obs. used      1997-12-04  
   last obs. used      2015-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5668  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:43:19  

Additional Information
 Earth MOID = .783157 au 
 Jupiter MOID = 2.22459 au 
 T_jup = 3.589 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9 mag n/a MPO344632  

44029 (1998 BK4)          Discovered 1998-Jan-21 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BK4 = 2000 YW65 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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