3102 Krok
| Discovery U–B = 0.521[1] | |
|---|---|
| 16.14±0.2 (R)[6] · 16.2[1] · 16.40±0.15[5] · 16.47±0.35[8] · 16.524±0.15[4][9] | |
3102 Krok, provisional designation 1981 QA, is a rare-type asteroid and slow rotator, classified as a near-Earth object of the Amor group, that measures approximately 1.5 kilometers in diameter.
It was discovered on 21 August 1981, by Slovak astronomer Ladislav Brožek at Kleť Observatory in the Czech Republic.[3] The asteroid was named after Duke Krok, a legendary Czech figure.[2]
Classification and orbit
Krok orbits the Sun at a distance of 1.2–3.1
precoveries were taken and no prior identifications were made.[3]
It has an Earth
lunar distances.[1]
Physical characteristics
In the
SMASS taxonomy it is classified as a common S-type asteroid, and the "ExploreNEOs" Warm Spitzer program assigns a transitional Sqw-type.[1][7] The R- and Q
-types also belong to the larger group of stony asteroids.
Rotation and shape
In September 1991, a first rotational
U=3).[5]
Between 2000 and 2005, several
U=3/3-).[6] This makes Krok as slow rotator
.
Diameter and albedo
According to
albedo of 0.15,[1] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony S-type asteroids of 0.20 and calculates a diameter of 1.48 kilometers with an absolute magnitude of 16.5.[4]
Naming
This
References
- ^ a b c d e f g h i j k l m "JPL Small-Body Database Browser: 3102 Krok (1981 QA)" (2017-01-28 last obs.). Jet Propulsion Laboratory. Retrieved 25 April 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c "3102 Krok (1981 QA)". Minor Planet Center. Retrieved 25 April 2017.
- ^ a b c d e "LCDB Data for (3102) Krok". Asteroid Lightcurve Database (LCDB). Retrieved 25 April 2017.
- ^ ISSN 0019-1035. Retrieved 25 April 2017.
- ^ . Retrieved 25 April 2017.
- ^ S2CID 119278697. Retrieved 25 April 2017.
- S2CID 53493339. Retrieved 25 April 2017.
- . Retrieved 25 April 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 25 April 2017.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- 3102 Krok at NeoDyS-2, Near Earth Objects—Dynamic Site
- 3102 Krok at ESA–space situational awareness
- 3102 Krok at the JPL Small-Body Database
