1021 Flammario

Source: Wikipedia, the free encyclopedia.

1021 Flammario
U–B = 0.230[3]
9.06[3]8.98
[4][7][6][9][10][11][14]
9.03[8]
9.34±0.27[21]

1021 Flammario, provisional designation 1924 RG, is a dark background

rotation period of 12.16 hours.[4]

Orbit and classification

Flammario is a non-

semi-major axis of 2.74 AU). Its orbit has an eccentricity of 0.29 and an inclination of 16° with respect to the ecliptic.[3]

The asteroid was first observed as A910 CE at Taunton Observatory (803) in February 1910. The body's observation arc begins at the Pulkovo Observatory near Saint Petersburg, Russia, in January 1928, more than four years after its official discovery observation at Heidelberg.[1]

Physical characteristics

In the

Tholen taxonomy. (The SMASS taxonomic scheme classifies all F-types as B-type asteroids).[3][4] More recent polarimetric observations also characterized the asteroid as a dark F-type.[20]

Rotation period

Several rotational

U=3-).[4][19]

Poles

In 2016, a modeled lightcurve using photometric data from various sources, rendered a similar sidereal period of 12.15186 hours and two spin axes of (32.0°, 22.0°) and (216.0°, 55.0°) in ecliptic coordinates.[18]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite

albedo between 0.04 and 0.05.[6][7][8][9][10][11][12][14]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0458 and a diameter of 99.39 kilometers based on an absolute magnitude of 8.98.[4]

Mass, density and porosity

Fienga et al. estimated the mass of Flammario as (8.6 ± 3.87/2.84)×1017 kg, with a theoretical bulk density of 1.606 ± 0.722/0.529 g/cm3.

Small Solar System bodies may have 20% of more porosity (which decreases with the size of the body due to self-gravity). The carbonaceous outer-belt asteroids typically show a higher macroporosity than the basaltic, stony asteroids from the inner regions of the asteroid belt.[22]

Naming

This

H 98). The lunar crater Flammarion as well as the crater Flammarion on Mars were also named in his honor.[2]

References

  1. ^ a b c d "1021 Flammario (1924 RG)". Minor Planet Center. Retrieved 13 March 2018.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f g h i j k "JPL Small-Body Database Browser: 1021 Flammario (1924 RG)" (2018-01-27 last obs.). Jet Propulsion Laboratory. Archived from the original on 11 January 2020. Retrieved 13 March 2018.
  4. ^ a b c d e f g "LCDB Data for (1021) Flammario". Asteroid Lightcurve Database (LCDB). Retrieved 13 March 2018.
  5. ^ a b "Asteroid 1021 Flammario – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
  6. ^
    S2CID 9341381
    . Retrieved 13 March 2018.
  7. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  8. ^
    doi:10.3847/0004-6256/152/3/63
    .
  9. ^
    S2CID 35447010
    .
  10. ^
    Bibcode:2004PDSS...12.....T
    . Retrieved 22 October 2019.
  11. ^
    hdl:11336/63614
    .
  12. ^
    S2CID 119293330
    .
  13. ^
    doi:10.1093/mnras/stz3407
    .
  14. ^
    S2CID 119214002
    . Retrieved 13 March 2018.
  15. ^
    ISSN 1052-8091
    . Retrieved 13 March 2018.
  16. ^
    Bibcode:1995A&AS..112..125H
    . Retrieved 13 March 2018.
  17. ^
    Bibcode:1993A&AS..101..499S
    . Retrieved 13 March 2018.
  18. ^
    S2CID 119112278
    .
  19. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (1021) Flammario". Geneva Observatory. Retrieved 13 March 2018.
  20. ^
    doi:10.1016/j.icarus.2016.11.003
    . Retrieved 13 March 2018.
  21. S2CID 53493339
    . Retrieved 13 March 2018.
  22. S2CID 119226456
    See Table 1.

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=1021_Flammario&oldid=1220118142"