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JPL Small-Body Database Browser
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58948 (1998 QT54)
Classification: Main-belt Asteroid          SPK-ID: 2058948
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06479310089579293 4.9727e-08  
a 2.400349307070178 9.6732e-09 au
q 2.244823232232034 1.1661e-07 au
i 5.597239513912451 5.6176e-06 deg
node 203.6156352092051 3.6284e-05 deg
peri 226.487981694389 5.2845e-05 deg
M 133.8219573930949 3.6841e-05 deg
tp 2458095.565583279580
(2017-Dec-08.06558328)
0.0001392 TDB
period 1358.345024691222
3.72
8.211e-06
2.248e-08
d
yr
n .2650283937115572 1.6021e-09 deg/d
Q 2.555875381908323 1.03e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1470  
   data-arc span      11552 days (31.63 yr)  
   first obs. used      1987-09-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51183  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:14:09  

Additional Information
 Earth MOID = 1.26225 au 
 Jupiter MOID = 2.61794 au 
 T_jup = 3.517 
[ 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 14.3   n/a MPO474469  
rotation period rot_per 9.574 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

58948 (1998 QT54)          Discovered 1998-Aug-27 by LONEOS at Anderson Mesa
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QT54 = 1987 SW25 = 2000 CE50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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