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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720637997872129 3.6803e-08  
a 2.400623842282031 1.0388e-08 au
q 1.987563382119206 8.945e-08 au
i 2.004745881465658 4.1228e-06 deg
node 308.7441788917645 0.00014224 deg
peri 5.557947693989101 0.00014292 deg
M 4.011312728463609 1.521e-05 deg
tp 2459185.361995837832
(2020-Dec-01.86199584)
5.7372e-05 TDB
period 1358.578068399048
3.72
8.8181e-06
2.414e-08
d
yr
n .2649829320623621 1.7199e-09 deg/d
Q 2.813684302444856 1.2175e-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 = .971698 au 
 Jupiter MOID = 2.45954 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 16.42   n/a E2021B55  

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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