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109402 (2001 QM180)
Classification: Main-belt Asteroid          SPK-ID: 2109402
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788212991987132 5.4097e-08  
a 2.509107883438427 9.7359e-09 au
q 2.060425951892234 1.362e-07 au
i 3.50294465058869 3.6472e-06 deg
node 84.79611161308766 9.3569e-05 deg
peri 271.5942341169728 9.3972e-05 deg
M 252.1675769253297 1.0882e-05 deg
tp 2459435.334799216291
(2021-Aug-08.83479922)
4.5112e-05 TDB
period 1451.701846757776
3.97
8.4494e-06
2.313e-08
d
yr
n .247984805422699 1.4434e-09 deg/d
Q 2.957789814984621 1.1477e-08 au
  Orbit Determination Parameters
   # obs. used (total)      750  
   data-arc span      10671 days (29.22 yr)  
   first obs. used      1991-02-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:04:19  

Additional Information
 Earth MOID = 1.05973 au 
 Jupiter MOID = 2.48937 au 
 T_jup = 3.438 
[ 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 15.9   n/a MPO325223  
rotation period rot_per 5.083 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.]

109402 (2001 QM180)          Discovered 2001-Aug-25 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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