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3695 Fiala (1973 UU4)
Classification: Main-belt Asteroid          SPK-ID: 2003695
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2304587698818611 3.9101e-08  
a 2.349264363150878 6.5328e-09 au
q 1.807855787891832 9.3279e-08 au
i 7.439657275508985 3.7446e-06 deg
node 177.033379968929 2.7858e-05 deg
peri 197.1054987975813 2.868e-05 deg
M 358.0617195707001 8.2042e-06 deg
tp 2459007.581257268531
2.9988e-05 TDB
period 1315.213515101149
n .2737198149703574 1.1417e-09 deg/d
Q 2.890672938409923 8.0384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1822  
   data-arc span      25198 days (68.99 yr)  
   first obs. used      1951-08-07  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52778  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:06:36  

Additional Information
 Earth MOID = .809655 au 
 Jupiter MOID = 2.57301 au 
 T_jup = 3.512 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO448950  
diameter diameter 7.727 km 0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Higgins, D. (2011) Minor Planet Bull. 38, 41-46.]
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

3695 Fiala           Discovered 1973 Oct. 21 by H. L. Giclas at the Anderson Mesa Station of the Lowell Observatory.
Alan D. Fiala (b. 1942) is an expert on predicting and observing eclipses, with special application to precise measurement of the solar radius. A staff astronomer at the U.S. Naval Observatory since 1962, he has been Chief of the U.S. Nautical Almanac Office since 1996. This naming is on the occasion of his retirement.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1973 UU4 = 1973 UW4 = 1973 YF4 = 1980 RY3 = 1980 TM7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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