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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1178519246949017 3.8644e-08  
a 2.356744263074761 8.9578e-09 au
q 2.078997415657732 8.9483e-08 au
i 7.128330254914129 4.9088e-06 deg
node 138.5696268991079 3.3118e-05 deg
peri 148.7618410444182 4.0828e-05 deg
M 12.76679187909671 2.505e-05 deg
tp 2458553.635240502027
(2019-Mar-11.13524050)
9.1931e-05 TDB
period 1321.499839508926
3.62
7.5344e-06
2.063e-08
d
yr
n .2724177402350478 1.5532e-09 deg/d
Q 2.634491110491789 1.0014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1046  
   data-arc span      10695 days (29.28 yr)  
   first obs. used      1990-08-16  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55319  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:07:38  

Additional Information
 Earth MOID = 1.06579 au 
 Jupiter MOID = 2.52162 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 15.0   n/a MPO253548  

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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