1822 Waterman

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1822 Waterman
Discovery
Synodic rotation period
7.581±0.002 h[6]
0.20 (assumed)[3]
0.2639±0.0659[5]
0.325±0.046[4]
S[3]
13.0[5] · 13.1[1][3] · 14.04±0.51[7]

1822 Waterman, provisional designation 1950 OO, is a stony asteroid from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter.

It was discovered on 25 July 1950, by Indiana University's

Alan T. Waterman.[2]

Orbit and classification

Waterman is a S-type asteroid. It orbits the Sun in the inner main-belt at a distance of 1.8–2.5 AU once every 3 years and 2 months (1,168 days). Its orbit has an eccentricity of 0.15 and an inclination of 1° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation, as its first identification, 1943 EB, made at the German Sonneberg Observatory in 1943, remained unused.[8]

Physical characteristics

Rotation period

In January 2013, a rotational

U=3).[6]

Diameter and albedo

According to the survey carried out by NASA's

albedo between 0.264 and 0.325.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.46 kilometers with an absolute magnitude of 13.1.[3]

Naming

This minor planet was named in honor of American physicist Alan Tower Waterman (1892–1967), who was the first director of the U.S. National Science Foundation. He went to Washington to serve with OSRD (1941–45), ONR (1946–51), and NSF (1951–63), after being an academic physicist for 25 years.[2]

Waterman was awarded the Karl Taylor Compton Gold Medal for distinguished statesmanship in science, the

M.P.C. 3825).[10]

References

  1. ^ a b c d "JPL Small-Body Database Browser: 1822 Waterman (1950 OO)" (2017-03-17 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 December 2016. Retrieved 8 June 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f "LCDB Data for (1822) Waterman". Asteroid Lightcurve Database (LCDB). Retrieved 15 December 2016.
  4. ^
    doi:10.1088/0004-637X/791/2/121
    . Retrieved 15 December 2016.
  5. ^
    doi:10.1088/0004-637X/741/2/90
    .
  6. ^
    ISSN 1052-8091
    . Retrieved 15 December 2016.
  7. doi:10.1016/j.icarus.2015.08.007
    . Retrieved 15 December 2016.
  8. ^ a b "1822 Waterman (1950 OO)". Minor Planet Center. Retrieved 15 December 2016.
  9. ^ "Public Welfare Medal". National Academy of Sciences. Retrieved 22 August 2016.
  10. ISBN 978-3-642-01964-7
    .

External links
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