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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0925394830022231 4.2572e-08  
a 2.324279117835219 8.2426e-09 au
q 2.109191529917884 9.9829e-08 au
i 7.876117088720161 5.252e-06 deg
node 41.0088824731947 2.9625e-05 deg
peri 10.92853518349168 4.1167e-05 deg
M 136.0232193822726 2.8628e-05 deg
tp 2458907.463363135952
(2020-Feb-27.96336314)
0.00010218 TDB
period 1294.287769915861
3.54
6.8849e-06
1.885e-08
d
yr
n .2781452536041525 1.4796e-09 deg/d
Q 2.539366705752553 9.0054e-09 au
  Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      8246 days (22.58 yr)  
   first obs. used      1998-11-09  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:18:52  

Additional Information
 Earth MOID = 1.11956 au 
 Jupiter MOID = 2.76155 au 
 T_jup = 3.557 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457480.5 (2016-Apr-02.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09220089840875252 4.2965e-08  
q 2.110212056451154 1.008e-07 au
tp 2457610.084646467065
(2016-Aug-09.58464647)
0.00010053 TDB
node 41.03633912457752 2.9605e-05 deg
peri 10.18005770570696 4.1165e-05 deg
i 7.879317877717718 5.2552e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      8246 days (22.58 yr)  
   first obs. used      1998-11-09  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:18:52  

Additional Information
 Jupiter MOID = 2.76155 au 
 T_jup = 3.557 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.845973700137543E-15 -4.319052692399788E-15 -2.418620746538593E-12 -1.3053884175115E-14 -6.79413129433963E-13 1.901952986079576E-15
q -4.319052692399788E-15 1.0160988377086E-14 5.795137710331206E-12 3.058032504240814E-14 1.62575721213014E-12 -4.374353628107957E-15
tp -2.418620746538593E-12 5.795137710331206E-12 1.010564389821417E-8 3.143360219098493E-11 2.889365755988919E-9 -5.353760133987611E-12
node -1.3053884175115E-14 3.058032504240814E-14 3.143360219098493E-11 8.764831157683087E-10 -8.589370158757082E-10 -7.038972187750856E-11
peri -6.79413129433963E-13 1.62575721213014E-12 2.889365755988919E-9 -8.589370158757082E-10 1.694591948600358E-9 6.822820452158648E-11
i 1.901952986079576E-15 -4.374353628107957E-15 -5.353760133987611E-12 -7.038972187750856E-11 6.822820452158648E-11 2.761665785037505E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.02   n/a MPO637422  
rotation period rot_per 19.737 h n/a LCDB (Rev. 2020-October); 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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