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20005 (1991 GL7)
Classification: Main-belt Asteroid          SPK-ID: 2020005
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0431768393462589 3.1735e-08  
a 2.321148113865987 8.1251e-09 au
q 2.220928274654723 7.5385e-08 au
i 3.947611158260018 3.5227e-06 deg
node 251.4815203975875 6.3705e-05 deg
peri 168.8714361392934 8.443e-05 deg
M 283.1956145289823 5.6422e-05 deg
tp 2459476.072721734971
(2021-Sep-18.57272174)
0.00020288 TDB
period 1291.67337537028
3.54
6.7822e-06
1.857e-08
d
yr
n .2787082298547804 1.4634e-09 deg/d
Q 2.42136795307725 8.4759e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      10815 days (29.61 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53719  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:11:15  

Additional Information
 Earth MOID = 1.23273 au 
 Jupiter MOID = 2.70413 au 
 T_jup = 3.573 
[ 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 14.97   n/a E2021B10  
diameter diameter 2.263 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.455   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20005 (1991 GL7)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 GL7 = 1998 FL119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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