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JPL Small-Body Database Browser
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27729 (1990 QK9)
Classification: Main-belt Asteroid          SPK-ID: 2027729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176823538933919 3.8663e-08  
a 2.356845445299617 8.8843e-09 au
q 2.079486325533838 8.9543e-08 au
i 7.128483036037233 4.9033e-06 deg
node 138.5659752752713 3.311e-05 deg
peri 148.8450677661194 4.0827e-05 deg
M 121.6725250602057 2.5108e-05 deg
tp 2458553.831729796108
(2019-Mar-11.33172980)
9.196e-05 TDB
period 1321.584944455077
3.62
7.4727e-06
2.046e-08
d
yr
n .2724001975888407 1.5403e-09 deg/d
Q 2.634204565065394 9.9299e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      10697 days (29.29 yr)  
   first obs. used      1990-08-16  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55276  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:40:57  

Additional Information
 Earth MOID = 1.06693 au 
 Jupiter MOID = 2.52276 au 
 T_jup = 3.534 
[ 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 15.1   n/a MPO502365  

27729 (1990 QK9)          Discovered 1990-Aug-16 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QK9 = 1996 DC5 = 1997 NE8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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