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5691 Fredwatson (1992 FD)
Classification: Main-belt Asteroid          SPK-ID: 2005691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161818944662444 3.5841e-08  
a 2.33435299483014 9.0886e-09 au
q 2.063143441537823 8.5806e-08 au
i 26.20586794608001 3.8409e-06 deg
node 175.7806712743066 8.6776e-06 deg
peri 34.42134626910747 1.963e-05 deg
M 281.4949442770837 1.9954e-05 deg
tp 2459284.581757851988
(2021-Mar-11.08175785)
7.2973e-05 TDB
period 1302.71142265889
3.57
7.608e-06
2.083e-08
d
yr
n .2763466979242606 1.6139e-09 deg/d
Q 2.605562548122457 1.0145e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2200  
   data-arc span      24985 days (68.41 yr)  
   first obs. used      1951-09-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40997  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:44:04  

Additional Information
 Earth MOID = 1.08898 au 
 Jupiter MOID = 2.38891 au 
 T_jup = 3.423 
[ 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 13.3   n/a MPO365316  
diameter diameter 5.517 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 106.0 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2010) Minor Planet Bull. 37, 146-147.]
geometric albedo albedo 0.421   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

5691 Fredwatson           Discovered 1992 Mar. 26 by R. H. McNaught at Siding Spring Observatory.
Fred Garnett Watson (b. 1944) specializes in astronomical instrumentation and helped pioneer the use of fiber-optic spectroscopy. He is currently astronomer-in-charge of the Anglo-Australian Observatory. Through his frequent radio appearances and magazine columns, he has become a well-known public figure.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

Alternate Designations
 1992 FD = 1953 FX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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