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185689 (1997 GR7)
Classification: Outer Main-belt Asteroid          SPK-ID: 2185689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1628079536298372 6.5793e-08  
a 3.20200343049782 4.0206e-08 au
q 2.680691804462751 2.2273e-07 au
i 27.51247461297119 7.9116e-06 deg
node 39.12330853511963 1.2494e-05 deg
peri 121.5752093556953 3.0306e-05 deg
M 56.75733236215989 2.3623e-05 deg
tp 2458670.548132709246
(2019-Jul-06.04813271)
0.00013683 TDB
period 2092.816333698301
5.73
3.9417e-05
1.079e-07
d
yr
n .172017006080906 3.2399e-09 deg/d
Q 3.723315056532889 4.6751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      8332 days (22.81 yr)  
   first obs. used      1997-04-02  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55984  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:08:38  

Additional Information
 Earth MOID = 1.76865 au 
 Jupiter MOID = 1.48271 au 
 T_jup = 2.998 
[ show covariance matrix ]

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 15.0   n/a MPO385819  
diameter diameter 7.141 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

185689 (1997 GR7)          Discovered 1997-Apr-02 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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