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JPL Small-Body Database Browser
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136946 (1998 QY99)
Classification: Main-belt Asteroid          SPK-ID: 2136946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2084630763145036 3.4551e-08  
a 2.404071228023842 1.5937e-08 au
q 1.902911144150805 8.3748e-08 au
i 2.765320419828948 5.9888e-06 deg
node 29.74513117614739 8.5255e-05 deg
peri 265.8583810545152 8.6812e-05 deg
M 230.1718966425466 1.8501e-05 deg
tp 2459091.504683766233
(2020-Aug-30.00468377)
7.1645e-05 TDB
period 1361.50557225017
3.73
1.3538e-05
3.707e-08
d
yr
n .2644131668187193 2.6292e-09 deg/d
Q 2.905231311896878 1.9259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      435  
   data-arc span      7498 days (20.53 yr)  
   first obs. used      1998-08-26  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59723  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:00:37  

Additional Information
 Earth MOID = .888751 au 
 Jupiter MOID = 2.30549 au 
 T_jup = 3.492 
[ 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 16.7   n/a MPO436676  

136946 (1998 QY99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 QY99 = 2001 GG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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