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74116 (1998 QL49)
Classification: Main-belt Asteroid          SPK-ID: 2074116
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2494395647454771 2.8427e-08  
a 2.688685462037051 1.0511e-08 au
q 2.018020930649037 7.6452e-08 au
i 3.853069508984861 4.31e-06 deg
node 15.13225787400924 4.8912e-05 deg
peri 280.2034230670613 4.9721e-05 deg
M 2.738385897768096 8.3721e-06 deg
tp 2458988.251001708447
(2020-May-18.75100171)
3.7443e-05 TDB
period 1610.30605239139
4.41
9.443e-06
2.585e-08
d
yr
n .2235599869139042 1.311e-09 deg/d
Q 3.359349993425065 1.3133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1998-06-29  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:10:43  

Additional Information
 Earth MOID = 1.00652 au 
 Jupiter MOID = 1.88073 au 
 T_jup = 3.324 
[ 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 14.6   n/a MPO436301  
rotation period rot_per 16.61 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

74116 (1998 QL49)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QL49 = 2001 CY25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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