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11894 (1991 GW)
Classification: Main-belt Asteroid          SPK-ID: 2011894
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1882836595034864 3.7038e-08  
a 2.357124735139222 6.5369e-09 au
q 1.913316664101023 8.7988e-08 au
i 7.953265432713434 3.8012e-06 deg
node 38.2801314991347 2.2588e-05 deg
peri 172.7258725502559 2.4254e-05 deg
M 4.403044408348231 7.9104e-06 deg
tp 2458984.333245636755
(2020-May-14.83324564)
2.9051e-05 TDB
period 1321.819866211976
3.62
5.4986e-06
1.505e-08
d
yr
n .2723517849914567 1.1329e-09 deg/d
Q 2.800932806177421 7.7676e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1993  
   data-arc span      10711 days (29.33 yr)  
   first obs. used      1991-04-03  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .487  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:28:34  

Additional Information
 Earth MOID = .907814 au 
 Jupiter MOID = 2.16235 au 
 T_jup = 3.517 
[ 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 14.2   n/a MPO365393  
diameter diameter 7.298 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11894 (1991 GW)          Discovered 1991-Apr-03 by Kawasato, N. at Uenohara
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 GW = 1996 TU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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