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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1885144181413148 1.5265e-08  
a 2.357913750422109 6.3675e-09 au
q 1.91341301173388 3.6086e-08 au
i 7.952080524560439 3.4743e-07 deg
node 38.26881526622278 5.4509e-06 deg
peri 172.7972887284449 6.7236e-06 deg
M 58.79867848047142 5.3405e-06 deg
tp 2458984.499197825913
(2020-May-14.99919783)
1.9579e-05 TDB
period 1322.483613445456
3.62
5.357e-06
1.467e-08
d
yr
n .2722150931323034 1.1027e-09 deg/d
Q 2.802414489110339 7.5679e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2031  
   data-arc span      10734 days (29.39 yr)  
   first obs. used      1991-04-03  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:51:25  

Additional Information
 Earth MOID = .906925 au 
 Jupiter MOID = 2.15979 au 
 T_jup = 3.516 
[ 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 14.29   n/a E2021B10  
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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