3982 Kastelʹ

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3982 Kastelʹ
Discovery 
Synodic rotation period
8.4877±0.0005 h[a]
8.488±0.003 h[7]
0.1695[6]
0.201±0.031[4][5]
P [4] · S [3]
12.9[1] · 13.2[4] · 13.35±0.08[3][6]

3982 Kastelʹ, provisional designation 1984 JP1, is a Florian asteroid and a suspected binary system[8] from the inner regions of the asteroid belt, approximately 6.9 kilometers in diameter.

It was discovered on 2 May 1984, by Russian astronomer

Galina Kastelʹ.[2]

Classification and orbit

Kastelʹ is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.8 AU once every 3 years and 5 months (1,240 days). Its orbit has an eccentricity of 0.22 and an inclination of 5° with respect to the ecliptic.[1] Kastelʹ was first identified as 1930 MF at Lowell Observatory in 1930, extending the asteroid's observation arc by 54 years prior to its discovery observation.[9]

Physical characteristics

Kastelʹ has been characterized as a dark and reddish

albedo of 0.20.[4] It is also an assumed S-type asteroid.[3]

Diameter and albedo

According to the survey carried out by NASA's

NEOWISE mission, Kastelʹ measures 6.79 kilometers in diameter and its surface has an albedo of 0.201,[4][5] while Petr Pravec's revised estimates of the thermal WISE observation gave a lower albedo of 0.1695 and consequently a larger diameter of 6.90 kilometers with an absolute magnitude of 13.35.[6]

Lightcurve

In September 2009 and February 2014, two rotational

U=n.a.).[7][a]

Suspected binary

During the first of the two a photometric observations – a collaboration between Czech astronomers Petr Pravec,

asteroid moon. However, no attenuations were observed, which typically occur when the primary and secondary body are eclipsing each other.[7] After a second observation in 2014, the binary nature of Kastelʹ still remains uncertain.[3][8][a] The "Johnstonsarchive" gives no estimates.[10]

Naming

This

M.P.C. 18306).[11]

Notes

  1. ^ a b c Pravec (2014) web: rotation period 8.4877±0.0005 hours with a brightness amplitude of 0.28 mag. Summary figures for (3982) Kastelʹ at Collaborative Asteroid Lightcurve Link (CALL) and Pravec, P.; Wolf, M.; Sarounova, L. (2014)

References

  1. ^ a b c d "JPL Small-Body Database Browser: 3982 Kastelʹ (1984 JP1)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 4 July 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f "LCDB Data for (3982) Kastelʹ". Asteroid Lightcurve Database (LCDB). Retrieved 17 November 2016.
  4. ^
    doi:10.1088/0004-637X/741/2/90
    .
  5. ^
    doi:10.1088/0004-637X/741/2/68
    . Retrieved 17 November 2016.
  6. ^
    doi:10.1016/j.icarus.2012.07.026
    . Retrieved 17 November 2016.
  7. ^
    Bibcode:2005IAUC.8609....2P
    . Retrieved 17 November 2016.
  8. ^ a b "Photometric Survey for Asynchronous Binary Asteroids". Astronomical Institute of the Czech Academy of Sciences (ASU). Retrieved 17 November 2016.
  9. ^ a b "3982 Kastelʹ (1984 JP1)". Minor Planet Center. Retrieved 17 November 2016.
  10. ^ Johnston, Robert (21 September 2014). "(3982) Kastelʹ". johnstonsarchive.net. Retrieved 30 March 2017.
  11. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 November 2016.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=3982_Kastelʹ&oldid=1190798653"