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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134221796900752 9.1291e-08  
a 2.258458577616949 2.0586e-08 AU
q 1.776453425242193 1.9893e-07 AU
i 3.81716841409098 7.1736e-06 deg
node 110.3794459586871 0.00014562 deg
peri 75.02688264840718 0.00014771 deg
M 314.0513158167602 2.9906e-05 deg
tp 2457158.729406692102
(2015-May-16.22940669)
0.0001047 JED
period 1239.7000571767
3.39
1.695e-05
4.641e-08
d
yr
n .2903928235833643 3.9704e-09 deg/d
Q 2.740463729991705 2.498e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      391  
   data-arc span      6145 days (16.82 yr)  
   first obs. used      1997-12-04  
   last obs. used      2014-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59309  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 15:31:39  

Additional Information
 Earth MOID = .784174 AU 
 T_jup = 3.588 
[ 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 15.7 mag n/a MPO235022  

44029 (1998 BK4)          Discovered 1998-Jan-21 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
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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