1763 Williams

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1763 Williams
Discovery
Synodic rotation period
8 h[9]
36 h[a]
0.24 (assumed)[3]
0.32±0.16[6]
0.330±0.086[7]
0.3305±0.0865[8]
S[3]
12.6[8] · 12.68±0.26[10] · 12.80[1][3][6]

1763 Williams, provisional designation 1953 TN2, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 13 October 1953, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States.[11] The asteroid was named after Kenneth P. Williams, professor of mathematics at Indiana University.[2]

Orbit and classification

Based on its

background asteroid, not belonging to any known family (Nesvorý, Milani and Knežević).[5]

The asteroid orbits the Sun in the inner main-belt at a distance of 1.7–2.6 AU once every 3 years and 3 months (1,183 days). Its orbit has an eccentricity of 0.20 and an inclination of 4° with respect to the ecliptic.[1]

The asteroid was first identified as 1939 EO at Nice Observatory in March 1939. The body's observation arc begins with its official discovery observation in October 1953.[11]

Physical characteristics

Williams is an assumed S-type asteroid.[3]

Rotation period

In October 2008, a rotational

U=1+).[9]

Diameter and albedo

According to the survey carried out by the

albedo of 0.32 and 0.3305, respectively.[6][7][8]

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the Flora family's largest member and namesake – and calculates a diameter of 7.47 kilometers based on an absolute magnitude of 12.8.[3]

Naming

This minor planet was named in honor of Kenneth P. Williams (1887–1958), long-time professor of mathematics at Indiana University. He was known for his textbook, the calculation of the orbits of asteroids and comets, and his detailed analysis of the transits of Mercury from 1723 to 1927. He also wrote Lincoln Finds a General, a five volume book about the American Civil War.[2]

The name was proposed by

M.P.C. 3143).[12]

Notes

  1. ^ a b Pravec (2008) web: rotation period of at least 36 hours with a brightness amplitude of greater than 0.30 mag. Quality Code of 2. Summary figures at Collaborative Asteroid Lightcurve Link (CALL)
  2. ^ Lightcurve plot for (1763) Williams with a period of 90 hours (P > 36 h and A > 0.3 mag). Summary figures at website of the Ondrejov Asteroid Photometry Project

References

  1. ^ a b c d "JPL Small-Body Database Browser: 1763 Williams (1953 TN2)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 6 September 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f g h "LCDB Data for (1763) Williams". Asteroid Lightcurve Database (LCDB). Retrieved 6 September 2017.
  4. ^ a b "Asteroid 1763 Williams – Asteroid Dynamical Families V4.1". Small Bodies Data Ferret. Retrieved 31 October 2019.
  5. ^ a b "Asteroid 1763 Williams – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 31 October 2019.
  6. ^
    doi:10.1088/0004-637X/814/2/117
    . Retrieved 6 September 2017.
  7. ^
    doi:10.1088/0004-637X/741/2/68
    . Retrieved 6 September 2017.
  8. ^
    doi:10.1088/0004-637X/741/2/90
    .
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1763) Williams". Geneva Observatory. Retrieved 6 September 2017.
  10. doi:10.1016/j.icarus.2015.08.007
    . Retrieved 6 September 2017.
  11. ^ a b "1763 Williams (1953 TN2)". Minor Planet Center. Retrieved 6 September 2017.
  12. ISBN 978-3-642-01964-7
    .

External links
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