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9075 (1994 GD9)
Classification: Main-belt Asteroid          SPK-ID: 2009075
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3149345803560454 3.8509e-08  
a 2.448598046556702 1.2574e-08 au
q 1.677449848303734 9.3059e-08 au
i 22.55765723391428 8.0084e-06 deg
node 198.4433419185598 8.5546e-06 deg
peri 302.6470763957081 1.5204e-05 deg
M 28.31138807150029 1.3319e-05 deg
tp 2459090.439029779994
(2020-Aug-28.93902978)
5.1315e-05 TDB
period 1399.505710533766
3.83
1.078e-05
2.951e-08
d
yr
n .25723367706924 1.9815e-09 deg/d
Q 3.21974624480967 1.6535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      11878 days (32.52 yr)  
   first obs. used      1988-09-11  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49995  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:10:41  

Additional Information
 Earth MOID = .771214 au 
 Jupiter MOID = 2.08204 au 
 T_jup = 3.328 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.72   n/a MPCxxxxx  
diameter diameter 2.994 km 0.646 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9075 (1994 GD9)          Discovered 1994-Apr-14 by Helin, E. F. at Palomar
Reference: 19980808/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 GD9 = 1989 YQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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