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48948 (1998 QL14)
Classification: Main-belt Asteroid          SPK-ID: 2048948
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870889118717614 3.5248e-08  
a 2.455361907584486 1.4405e-08 au
q 1.995990920043132 8.9374e-08 au
i 4.324412177146353 4.7221e-06 deg
node 216.5249649884357 4.9926e-05 deg
peri 97.69903185158267 5.3104e-05 deg
M 245.9477635778235 2.4274e-05 deg
tp 2459445.718295529230
(2021-Aug-19.21829553)
9.783e-05 TDB
period 1405.308579809295
3.85
1.2367e-05
3.386e-08
d
yr
n .2561714951237636 2.2544e-09 deg/d
Q 2.91473289512584 1.71e-08 au
  Orbit Determination Parameters
   # obs. used (total)      824  
   data-arc span      7971 days (21.82 yr)  
   first obs. used      1998-07-26  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:04  

Additional Information
 Earth MOID = .987888 au 
 Jupiter MOID = 2.38376 au 
 T_jup = 3.465 
[ 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 15.4   n/a MPO417155  
rotation period rot_per 21.943 h n/a LCDB (Rev. 2019-August); 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.]

48948 (1998 QL14)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QL14 = 2001 FD139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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