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85447 (1997 GQ11)
Classification: Main-belt Asteroid          SPK-ID: 2085447
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1007668804790038 3.7856e-08  
a 2.275695397704816 8.9779e-09 au
q 2.046380671557676 8.7698e-08 au
i 6.86024613722734 5.7038e-06 deg
node 358.9192750997022 3.0513e-05 deg
peri 64.84612732195316 4.5979e-05 deg
M 275.4648318129844 3.0843e-05 deg
tp 2458894.945244101499
(2020-Feb-15.44524410)
0.0001071 TDB
period 1253.919405968853
3.43
7.4203e-06
2.032e-08
d
yr
n .2870997914908593 1.699e-09 deg/d
Q 2.505010123851956 9.8826e-09 au
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:16:35  

Additional Information
 Earth MOID = 1.06929 au 
 Jupiter MOID = 2.74298 au 
 T_jup = 3.593 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456787.5 (2014-May-10.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008411204080876 3.8046e-08  
q 2.04617969991731 8.8134e-08 au
tp 2456384.363015662470
(2013-Apr-01.86301566)
0.00011056 TDB
node 358.9888331162365 3.0471e-05 deg
peri 64.19521521714539 4.5956e-05 deg
i 6.865704199680758 5.7072e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:16:35  

Additional Information
 Jupiter MOID = 2.74298 au 
 T_jup = 3.593 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.447477023645039E-15 -3.33948538818053E-15 -1.596234903915606E-12 1.678695516289357E-14 -5.145024452624035E-13 -3.291194283843327E-15
q -3.33948538818053E-15 7.767546829479675E-15 3.372928212430437E-12 -3.732908600281588E-14 1.098747549694212E-12 7.933981261192591E-15
tp -1.596234903915606E-12 3.372928212430437E-12 1.222332404108599E-8 -7.094637869187186E-11 3.809967159922442E-9 5.024646209922836E-13
node 1.678695516289357E-14 -3.732908600281588E-14 -7.094637869187186E-11 9.28492059988164E-10 -9.428328944467377E-10 1.982938570995685E-11
peri -5.145024452624035E-13 1.098747549694212E-12 3.809967159922442E-9 -9.428328944467377E-10 2.11192421055254E-9 -1.945773343921351E-11
i -3.291194283843327E-15 7.933981261192591E-15 5.024646209922836E-13 1.982938570995685E-11 -1.945773343921351E-11 3.25717316991104E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO453284  
diameter diameter 1.614 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.681 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.428   0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85447 (1997 GQ11)          Discovered 1997-Apr-03 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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