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JPL Small-Body Database Browser
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33128 (1998 BU48)
Classification: TransNeptunian Object          SPK-ID: 2033128
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3813001459657383 5.9557e-06  
a 33.2396565807851 0.0013277 au
q 20.56537067468073 0.00067815 au
i 14.26667690806014 4.6069e-05 deg
node 132.8462983813094 0.00012992 deg
peri 282.2702795469961 0.0040382 deg
M 78.39649069305828 0.0055462 deg
tp 2443357.258125832788
(1977-Aug-01.75812583)
0.16901 TDB
period 69997.61119646775
191.64
4.1938
0.01148
d
yr
n .005143032652779535 3.0813e-07 deg/d
Q 45.91394248688947 0.0018339 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      7743 days (21.20 yr)  
   first obs. used      1998-01-22  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .47406  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:35:14  

Additional Information
 Earth MOID = 19.6074 au 
 Jupiter MOID = 15.7126 au 
 T_jup = 4.685 
[ 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 6.9   n/a MPO385022  
rotation period rot_per 12.6 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Sheppard, S.S.; Jewitt, D.C. (2002) Astron. J. 124, 1757-1775; Proc. ACM 2002, ESA SP 500, 21-24 (2002ESASP.500...21S); Sheppard, S.S. (2001) IAUC 7619 (2001IAUC.7619....3S).]

33128 (1998 BU48)          Discovered 1998-Jan-22 by Danzl, N. at Steward
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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