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58688 (1998 BJ4)
Classification: Main-belt Asteroid          SPK-ID: 2058688
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2775839278193671 6.3312e-08  
a 2.743178506602415 2.7358e-08 AU
q 1.981716242030051 1.7044e-07 AU
i 10.54480848199347 9.3919e-06 deg
node 314.6617749700917 2.5358e-05 deg
peri 140.6883852321522 3.2803e-05 deg
M 280.7081081297536 2.1796e-05 deg
tp 2457366.015509959069
(2015-Dec-09.51550996)
0.00010487 JED
period 1659.508689748402
4.54
2.4826e-05
6.797e-08
d
yr
n .2169316751541563 3.2452e-09 deg/d
Q 3.504640771174779 3.4952e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      6688 days (18.31 yr)  
   first obs. used      1996-08-18  
   last obs. used      2014-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50813  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 04:46:42  

Additional Information
 Earth MOID = 1.01035 AU 
 T_jup = 3.268 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO302382  
rotation period rot_per 20.7887 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

58688 (1998 BJ4)          Discovered 1998-Jan-21 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BJ4 = 1996 QL2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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