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85969 (1999 GP2)
Classification: Main-belt Asteroid          SPK-ID: 2085969
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .149013361085205 4.377e-08  
a 3.107921380353258 2.1233e-08 au
q 2.644799569478249 1.3618e-07 au
i 5.812832369279801 4.9633e-06 deg
node 147.6109063340689 3.6624e-05 deg
peri 183.2006390721518 3.862e-05 deg
M 224.2873852089195 1.2826e-05 deg
tp 2459954.933874906428
(2023-Jan-10.43387491)		 7.4284e-05 TDB
period 2001.259760446118
5.48		 2.0509e-05
5.615e-08		 d
yr
n .1798866929297321 1.8435e-09 deg/d
Q 3.571043191228267 2.4397e-08 au
   Orbit Determination Parameters
   # obs. used (total)      751  
   data-arc span      8119 days (22.23 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:09  

Additional Information
 Earth MOID = 1.6321 au 
 Jupiter MOID = 1.79097 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1465953596758335 4.36e-08  
q 2.655608520877055 1.352e-07 au
tp 2457952.000829872919
(2017-Jul-17.50082987)		 6.9467e-05 TDB
node 147.6285174933215 3.6616e-05 deg
peri 182.8370434997279 3.87e-05 deg
i 5.810148026327816 4.9613e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      751  
   data-arc span      8119 days (22.23 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:09  

Additional Information
 Jupiter MOID = 1.79097 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.900943705179991E-15 -5.841412830012065E-15 5.544893634507562E-13 3.362275544025027E-15 8.125725137514285E-14 -6.62284178654326E-16
q -5.841412830012065E-15 1.827774390452312E-14 -1.534330623334895E-12 -7.10057624719161E-15 -2.568388001040428E-13 2.678170497147354E-15
tp 5.544893634507562E-13 -1.534330623334895E-12 4.825626974644683E-9 -1.579926955939087E-12 8.756224049027672E-10 -6.488349669119895E-13
node 3.362275544025027E-15 -7.10057624719161E-15 -1.579926955939087E-12 1.340751672291405E-9 -1.33370706298013E-9 2.910222117143954E-11
peri 8.125725137514285E-14 -2.568388001040428E-13 8.756224049027672E-10 -1.33370706298013E-9 1.497668090526938E-9 -2.908399415155046E-11
i -6.62284178654326E-16 2.678170497147354E-15 -6.488349669119895E-13 2.910222117143954E-11 -2.908399415155046E-11 2.461471923242985E-11

[ 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 14.93   n/a E2021B10  
diameter diameter 5.510 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85969 (1999 GP2)          Discovered 1999-Apr-08 by Bickel, W. at Bergisch Gladbach
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 GP2 = 2001 SA66 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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