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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1009732988780381 3.7765e-08  
a 2.276133605859142 8.8904e-09 au
q 2.04630488698838 8.7609e-08 au
i 6.859776663418351 5.5972e-06 deg
node 358.9138694494752 3.0086e-05 deg
peri 64.79856062606696 4.562e-05 deg
M 30.34381798169714 3.0489e-05 deg
tp 2458894.778631275388
(2020-Feb-15.27863128)
0.00010634 TDB
period 1254.281605690402
3.43
7.3487e-06
2.012e-08
d
yr
n .2870168854958556 1.6816e-09 deg/d
Q 2.505962324729903 9.7881e-09 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      8359 days (22.89 yr)  
   first obs. used      1997-03-11  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:32:34  

Additional Information
 Earth MOID = 1.06956 au 
 Jupiter MOID = 2.7413 au 
 T_jup = 3.593 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456872.5 (2014-Aug-03.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008181489950585 3.7949e-08  
q 2.046230109993513 8.7974e-08 au
tp 2456384.316044357073
(2013-Apr-01.81604436)
0.00011027 TDB
node 358.9885569017765 3.0043e-05 deg
peri 64.18529417700701 4.5667e-05 deg
i 6.865635490613442 5.6009e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      8359 days (22.89 yr)  
   first obs. used      1997-03-11  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:32:34  

Additional Information
 Jupiter MOID = 2.7413 au 
 T_jup = 3.593 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.440109577551402E-15 -3.325218421988591E-15 -1.615344733836593E-12 1.835296473823324E-14 -5.208373156448683E-13 -3.565521592452688E-15
q -3.325218421988591E-15 7.739481126260909E-15 3.410027848254769E-12 -4.090469507117406E-14 1.111716401543278E-12 8.586044493261001E-15
tp -1.615344733836593E-12 3.410027848254769E-12 1.215945944210094E-8 -7.611659534508733E-11 3.798934913812051E-9 1.741510889647557E-12
node 1.835296473823324E-14 -4.090469507117406E-14 -7.611659534508733E-11 9.025527784333776E-10 -9.186692122956183E-10 2.518872025754189E-11
peri -5.208373156448683E-13 1.111716401543278E-12 3.798934913812051E-9 -9.186692122956183E-10 2.08543715050703E-9 -2.440705589144901E-11
i -3.565521592452688E-15 8.586044493261001E-15 1.741510889647557E-12 2.518872025754189E-11 -2.440705589144901E-11 3.137013967566918E-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 15.8   n/a MPO502665  
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-August); 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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