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109217 (2001 QX85)
Classification: Main-belt Asteroid          SPK-ID: 2109217
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2593759352459262 6.1759e-08  
a 2.547528248207528 1.4405e-08 au
q 1.886760726263285 1.6165e-07 au
i 3.63355874986946 1.2969e-05 deg
node 8.548686175884713 8.0029e-05 deg
peri 51.10019810245412 8.834e-05 deg
M 184.0463887908213 3.7191e-05 deg
tp 2459726.393024788294
(2022-May-26.89302479)
0.00015827 TDB
period 1485.172637992178
4.07
1.2597e-05
3.449e-08
d
yr
n .2423960627814206 2.0559e-09 deg/d
Q 3.208295770151772 1.8141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      7856 days (21.51 yr)  
   first obs. used      1997-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56305  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:29:06  

Additional Information
 Earth MOID = .901709 au 
 Jupiter MOID = 2.16161 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455996.5 (2012-Mar-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2590651344730927 6.0809e-08  
q 1.88843633375827 1.5823e-07 au
tp 2455271.329785661545
(2010-Mar-15.82978566)
0.00013296 TDB
node 8.62038328727863 8.0045e-05 deg
peri 51.24189458193319 8.8335e-05 deg
i 3.633270202004818 1.2962e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      7856 days (21.51 yr)  
   first obs. used      1997-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56305  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:29:06  

Additional Information
 Jupiter MOID = 2.16161 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.697678149391895E-15 -9.603639088960293E-15 -6.665988827179702E-12 7.768049087010943E-14 -1.873080096583516E-12 -1.587107769852016E-14
q -9.603639088960293E-15 2.503576932859292E-14 1.778884444391114E-11 -2.025317177576547E-13 4.997384796366666E-12 4.134490356441614E-14
tp -6.665988827179702E-12 1.778884444391114E-11 1.767775152029625E-8 -2.055604778192527E-10 5.002342535541305E-9 4.291254165326666E-11
node 7.768049087010943E-14 -2.025317177576547E-13 -2.055604778192527E-10 6.407230740283045E-9 -6.448362097136635E-9 -7.177266020570452E-10
peri -1.873080096583516E-12 4.997384796366666E-12 5.002342535541305E-9 -6.448362097136635E-9 7.803142017273142E-9 7.276708272942618E-10
i -1.587107769852016E-14 4.134490356441614E-14 4.291254165326666E-11 -7.177266020570452E-10 7.276708272942618E-10 1.680152318129625E-10

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 16.0   n/a MPO268013  

109217 (2001 QX85)          Discovered 2001-Aug-22 by Yeung, W. K. Y. at Desert Eagle
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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