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109187 (2001 QK71)
Classification: Main-belt Asteroid          SPK-ID: 2109187
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09231252975598493 5.0342e-08  
a 2.324445386550209 9.0699e-09 au
q 2.109869952638131 1.1964e-07 au
i 7.875845882480433 6.0921e-06 deg
node 41.02028018081619 2.9828e-05 deg
peri 10.99529427340981 4.1422e-05 deg
M 25.83256774489617 2.874e-05 deg
tp 2458907.615654923902
(2020-Feb-28.11565492)
0.00010318 TDB
period 1294.426653889332
3.54
7.5762e-06
2.074e-08
d
yr
n .2781154103388685 1.6278e-09 deg/d
Q 2.539020820462287 9.9071e-09 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      7756 days (21.23 yr)  
   first obs. used      1998-11-09  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55968  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:20:48  

Additional Information
 Earth MOID = 1.12077 au 
 Jupiter MOID = 2.76161 au 
 T_jup = 3.557 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO449652  
rotation period rot_per 19.737 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.]

109187 (2001 QK71)          Discovered 2001-Aug-16 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 QK71 = 1998 VH55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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