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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 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 
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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 15.7   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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