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5657 Groombridge (1936 QE1)
Classification: Main-belt Asteroid          SPK-ID: 2005657
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668277080118251 6.4515e-08  
a 2.58604928502435 1.6273e-08 au
q 2.154624609998119 1.7282e-07 au
i 14.13890025847402 6.3454e-06 deg
node 166.731372644998 1.7882e-05 deg
peri 203.6899151384472 2.3066e-05 deg
M 50.16183024081312 1.4202e-05 deg
tp 2457388.846966993505
(2016-Jan-01.34696699)
5.9523e-05 JED
period 1518.985481920149
4.16
1.4338e-05
3.926e-08
d
yr
n .2370002901837641 2.237e-09 deg/d
Q 3.017473960050582 1.8988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1377  
   data-arc span      28986 days (79.36 yr)  
   first obs. used      1936-09-11  
   last obs. used      2016-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .41897  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:14:18  

Additional Information
 Earth MOID = 1.15823 au 
 Jupiter MOID = 2.44312 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO302098  

5657 Groombridge           Discovered 1936 Aug. 28 by K. Reinmuth at Heidelberg.
Stephen Groombridge (1755-1832) compiled a famous catalogue of circumpolar stars down to ninth magnitude. Starting in 1806, he used a transit circle for the 20-year work. In 1842 Argelander found that star No. 1830 in the catalogue had the highest proper motion then known. The name was suggested by L. D. Schmadel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
Alternate Designations
 1936 QE1 = 1986 RU1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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