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6912 Grimm (1991 GQ2)
Classification: Main-belt Asteroid          SPK-ID: 2006912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176807309811397 3.9035e-08  
a 3.065539095541999 1.6854e-08 au
q 2.704784213927355 1.177e-07 au
i 2.076672314981986 4.3388e-06 deg
node 179.1953786357426 9.926e-05 deg
peri 351.3520529329719 0.00010046 deg
M 96.59105369320748 1.6106e-05 deg
tp 2458074.491068329993
(2017-Nov-16.99106833)
8.6534e-05 TDB
period 1960.463295106582
5.37
1.6167e-05
4.426e-08
d
yr
n .1836300638214338 1.5143e-09 deg/d
Q 3.426293977156643 1.8837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1968  
   data-arc span      15335 days (41.98 yr)  
   first obs. used      1977-09-09  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49307  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:56:07  

Additional Information
 Earth MOID = 1.71116 au 
 Jupiter MOID = 1.5441 au 
 T_jup = 3.221 
[ 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 12.9   n/a MPO435765  
diameter diameter 11.390 km 1.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.103   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6912 Grimm (1991 GQ2)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 GQ2 = 1977 RC16 = 1978 WV2 = 1990 AQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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