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JPL Small-Body Database Browser
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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
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[ 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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