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100981 (1998 QK27)
Classification: Main-belt Asteroid          SPK-ID: 2100981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720306190526573 3.6798e-08  
a 2.400235837256235 1.0189e-08 au
q 1.987321780300672 8.9464e-08 au
i 2.004745886729583 4.1221e-06 deg
node 308.7459042584069 0.00014226 deg
peri 5.667981166889816 0.00014294 deg
M 310.9249850105958 1.5118e-05 deg
tp 2459185.655765828599
(2020-Dec-02.15576583)
5.7363e-05 TDB
period 1358.248707874817
3.72
8.6484e-06
2.368e-08
d
yr
n .2650471875384838 1.6876e-09 deg/d
Q 2.813149894211799 1.1942e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      8479 days (23.21 yr)  
   first obs. used      1997-04-07  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:07  

Additional Information
 Earth MOID = .973464 au 
 Jupiter MOID = 2.46094 au 
 T_jup = 3.505 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456721.5 (2014-Mar-05.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719405408514627 3.6774e-08  
q 1.986996923346627 8.9288e-08 au
tp 2456466.500132629577
(2013-Jun-23.00013263)
5.4639e-05 TDB
node 308.834616373327 0.00014192 deg
peri 5.018983941173913 0.00014261 deg
i 2.008420052096134 4.1234e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      8479 days (23.21 yr)  
   first obs. used      1997-04-07  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:07  

Additional Information
 Jupiter MOID = 2.46094 au 
 T_jup = 3.505 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.352295663074555E-15 -3.268587316341286E-15 5.396745598141733E-13 1.267575490307363E-14 1.214976837234377E-13 -6.887163209979919E-17
q -3.268587316341286E-15 7.972390739730743E-15 -1.293329498133578E-12 -2.992752450317812E-14 -2.87478766213342E-13 2.57073414765807E-16
tp 5.396745598141733E-13 -1.293329498133578E-12 2.985420269995199E-9 1.473150029622114E-11 7.930087629141688E-10 -7.587614129398791E-14
node 1.267575490307363E-14 -2.992752450317812E-14 1.473150029622114E-11 2.014037359563335E-8 -2.012387744570927E-8 1.025816517496279E-10
peri 1.214976837234377E-13 -2.87478766213342E-13 7.930087629141688E-10 -2.012387744570927E-8 2.033639297387451E-8 -1.025370151675561E-10
i -6.887163209979919E-17 2.57073414765807E-16 -7.587614129398791E-14 1.025816517496279E-10 -1.025370151675561E-10 1.700280872383372E-11

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 16.4   n/a MPO469017  

100981 (1998 QK27)          Discovered 1998-Aug-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QK27 = 2002 TY101 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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