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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ 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 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

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