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12776 Reynolds (1994 PT31)
Classification: Main-belt Asteroid          SPK-ID: 2012776
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05518631772297729 3.4001e-08  
a 2.561003417964551 1.1876e-08 au
q 2.419671069651128 8.6203e-08 au
i 3.572111378992818 4.4368e-06 deg
node 210.8433374844877 5.8538e-05 deg
peri 43.84196229051592 7.8692e-05 deg
M 180.1112565271289 5.6824e-05 deg
tp 2459748.523344208324
(2022-Jun-18.02334421)
0.00023876 TDB
period 1496.971954532596
4.10
1.0413e-05
2.851e-08
d
yr
n .2404854672861282 1.6728e-09 deg/d
Q 2.702335766277973 1.2531e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1440  
   data-arc span      9299 days (25.46 yr)  
   first obs. used      1994-08-12  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:26:51  

Additional Information
 Earth MOID = 1.40659 au 
 Jupiter MOID = 2.30492 au 
 T_jup = 3.430 
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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 14.6   n/a MPO347626  
diameter diameter 2.996 km 0.673 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12776 Reynolds           Discovered 1994 Aug. 12 by E. W. Elst at the European Southern Observatory.
Osbourne Reynolds (1842-1912) was a British engineer and physicist known for his work in fluid dynamics. He is remembered for the Reynolds' number (1883), which is defined by the difference between laminar and turbulent flow. He wrote a remarkable book: The Sub-mechanics of the Universe (1903).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

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Alternate Designations
 1994 PT31 = 1997 GH15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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