16525 Shumarinaiko

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16525 Shumarinaiko
Discovery
Synodic rotation period
2.5932±0.0003 h[6]
2.6425±0.0006 h (poor)[9]
8.8±0.3 h (poor)[10]
0.20 (assumed)[3]
0.306±0.033[7][8]
S (assumed)[3]
13.3[8] · 13.6[1][3] · 14.37±0.56[11]

16525 Shumarinaiko (

Lake Shumarinai.[2] Its sub-kilometer sized minor-planet moon
was discovered in 2013.

Orbit and classification

Shumarinaiko is a member of the

405),[3][4] the largest asteroid family of the main belt, consisting of stony and carbonaceous subfamilies. The family, named after 44 Nysa, is located in the inner belt near the Kirkwood gap (3:1 orbital resonance with Jupiter), a depleted zone that separates the central main belt.[13]

It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,358 days). Its orbit has an eccentricity of 0.14 and an inclination of 2° with respect to the ecliptic.[1]

The body's observation arc begins with a precovery from the Digitized Sky Survey. It was taken at Palomar Observatory in March 1950, almost 41 years prior to the asteroid's official discovery observation at Kitami in 1991.[12]

Physical characteristics

Shumarinaiko is an assumed stony S-type asteroid.[3]

Rotation period

In January 2013, a rotational

U=1/1).[9][10]
A low brightness amplitude typically indicates that the body is rather spherical in shape.

Moon

During the photometric observation by Warner and Coley in January 2013 (see above), mutual

occultation and eclipsing events revealed that Shumarinaiko is a synchronous binary asteroid with an elongated minor-planet moon in orbit. The satellite, provisionally designated S/2013 (16525) 1, seems to be tidally locked to its orbital period of 14.409 hours. It measures least 16% of its primary (Ds/Dp of <0.16±0.02),[6][a] which translates into a diameter of approximately 830 meters.[5] There are more than 100 binary asteroids
known to exist in the asteroid belt.

Diameter and albedo

According to the survey carried out by the

albedo of 0.306,[7][8] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.66 kilometers based on an absolute magnitude of 13.6.[3]

Naming

This

M.P.C. 55722).[14]

Notes

  1. ^ a b c Brian D. Warner (2013) Lightcurve plot of 16525 Shumarinaiko, Palmer Divide Observatory: rotation period of 2.5932±0.0003 hours with a brightness amplitude of 0.08±0.01 mag. Quality code of 3. Secondary plot with an orbital period of 14.409±0.005 hours. Summary figures for (16525) Shumarinaiko at LCDB

References

  1. ^ a b c d "JPL Small-Body Database Browser: 16525 Shumarinaiko (1991 CU2)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 27 October 2017.
  2. ^
    ISBN 978-3-540-34361-5
    .
  3. ^ a b c d e f g h "LCDB Data for (16525) Shumarinaiko". Asteroid Lightcurve Database (LCDB). Retrieved 27 October 2017.
  4. ^ a b "Asteroid 16525 Shumarinaiko – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
  5. ^ a b Johnston, Robert (21 September 2014). "Asteroids with Satellites Database – (16525) Shumarinaiko". Johnston's Archive. Retrieved 27 October 2017.
  6. ^
    ISSN 1052-8091
    . Retrieved 27 October 2017.
  7. ^
    doi:10.1088/0004-637X/741/2/68
    . Retrieved 27 October 2017.
  8. ^
    doi:10.1088/0004-637X/741/2/90
    .
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (16525) Shumarinaiko". Geneva Observatory. Retrieved 27 October 2017.
  10. ^
    ISSN 1052-8091
    . Retrieved 27 October 2017.
  11. doi:10.1016/j.icarus.2015.08.007
    . Retrieved 27 October 2017.
  12. ^ a b "16525 Shumarinaiko (1991 CU2)". Minor Planet Center. Retrieved 27 October 2017.
  13. ISBN 978-0-8165-3213-1
    .
  14. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 October 2017.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=16525_Shumarinaiko&oldid=1196940865"