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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09208959355678895 5.0566e-08  
a 2.324097316299988 9.4736e-09 au
q 2.110072139055498 1.1994e-07 au
i 7.876438626349331 6.1089e-06 deg
node 41.02130057177046 3.1345e-05 deg
peri 10.99336967961705 4.2672e-05 deg
M 274.5619269607328 2.9236e-05 deg
tp 2458907.634663908410
(2020-Feb-28.13466391)
0.00010569 TDB
period 1294.135917089452
3.54
7.9128e-06
2.166e-08
d
yr
n .278177890935637 1.7009e-09 deg/d
Q 2.538122493544478 1.0346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      7661 days (20.97 yr)  
   first obs. used      1998-11-09  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57896  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:50:17  

Additional Information
 Earth MOID = 1.12048 au 
 Jupiter MOID = 2.7633 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-January); 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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