1146 Biarmia

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1146 Biarmia
Discovery
U–B = 0.247[1]
9.80[1][4][5][6][7][9] · 9.99±0.33[16]

1146 Biarmia, provisional designation 1929 JF, is a metallic background asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 7 May 1929, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.[17] The asteroid was named for the Bjarmaland mentioned in Norse sagas.

Orbit and classification

Biarmia is not a member of any known asteroid family. It orbits the Sun in the outer main-belt at a distance of 2.3–3.8 AU once every 5 years and 4 months (1,940 days). Its orbit has an eccentricity of 0.26 and an inclination of 17° with respect to the ecliptic.[1]

The asteroid was first identified as A913 KA at Winchester Observatory (

799) in June 1913. The body's observation arc begins with its official discovery observation at Simeiz.[17]

Physical characteristics

Biarmia has been characterized in several observations as a metallic

Tholen classification, it is an X-type asteroid which also includes the M-types as a subgroup.[1][4]

Rotation period

The best-rated rotational

U=3/3).[11][12][a]

Other observations received a lower rating or have since been retracted.

U=2).[10][13]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite

albedo between 0.1436 and 0.455.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, a stony albedo of 0.2190 and a diameter of 31.14 kilometers based on an absolute magnitude of 9.80.[4]

Naming

This

H 107).[3]

Notes

  1. ^ a b Lightcurve plot of 1146 Biarmia with a period of 5.47 hours. Brian D. Warner. Note by Warner: "Originally reported in MPB 27, 4-6 with P = 11.514 and A = 0.32. Reanalysis found revised period of P = 5.33, which disagrees with the 5.47 found by Durkee. The curve above is plotted to the Durkee period, which does give a better fit than with 5.33 h."
  2. ^ a b Behrend (2008) web: obs. date: 27 January 2008. Rotation period 21.6 hours with a brightness amplitude of 0.07 mag. Summary figures for (1146) Biarmia at Collaborative Asteroid Lightcurve Link (CALL). Lightcurve was removed from website by Raoul Behrend.

References

  1. ^ a b c d e f g h "JPL Small-Body Database Browser: 1146 Biarmia (1929 JF)" (2017-03-24 last obs.). Jet Propulsion Laboratory. Archived from the original on 10 August 2020. Retrieved 8 September 2017.
  2. ^ 'Biarmian' in Eduard Muret (1891) Encyclopædic English–German and German–English Dictionary
  3. ^
    ISBN 978-3-540-00238-3
    .
  4. ^ a b c d e "LCDB Data for (1146) Biarmia". Asteroid Lightcurve Database (LCDB). Retrieved 8 September 2017.
  5. ^
    doi:10.1088/2041-8205/759/1/L8
    .
  6. ^
    Bibcode:2004PDSS...12.....T
    . Retrieved 22 October 2019.
  7. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  8. ^
    doi:10.1088/0004-637X/791/2/121
    .
  9. ^
    doi:10.1088/0004-637X/741/2/90
    .
  10. ^
    ISSN 1052-8091
    .
  11. ^
    ISSN 1052-8091
    .
  12. ^
    ISSN 1052-8091
    .
  13. ^
    Bibcode:2000MPBu...27....4W
    .
  14. ^
    doi:10.1016/j.icarus.2011.04.022
    .
  15. ^
    doi:10.1016/j.icarus.2016.11.003
    .
  16. doi:10.1016/j.icarus.2015.08.007
    .
  17. ^ a b "1146 Biarmia (1929 JF)". Minor Planet Center. Retrieved 8 September 2017.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=1146_Biarmia&oldid=1191754585"