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109118 (2001 QH42)
Classification: Main-belt Asteroid          SPK-ID: 2109118
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05686410328056217 6.5098e-08  
a 2.471667085677879 1.7218e-08 au
q 2.331117953242726 1.5723e-07 au
i 3.207893336168822 6.5764e-06 deg
node 321.399832658699 8.4456e-05 deg
peri 60.29210227228091 0.00010258 deg
M 244.1164051231797 5.4247e-05 deg
tp 2459457.380735913069
(2021-Aug-30.88073591)
0.0002135 TDB
period 1419.330019089739
3.89
1.4831e-05
4.061e-08
d
yr
n .2536407989389807 2.6503e-09 deg/d
Q 2.612216218113032 1.8197e-08 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      6485 days (17.75 yr)  
   first obs. used      2001-07-27  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55878  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:19:44  

Additional Information
 Earth MOID = 1.33509 au 
 Jupiter MOID = 2.62694 au 
 T_jup = 3.479 
[ 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 16.0   n/a MPO436525  
rotation period rot_per 7.898 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.]

109118 (2001 QH42)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QH42 = 2003 AM43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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