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Contents

   



(Top)
 


1 Classification and orbit  





2 Naming  





3 Physical characteristics  



3.1  Rotation period and pole  





3.2  Diameter and albedo  







4 References  





5 External links  














1419 Danzig






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From Wikipedia, the free encyclopedia
 


1419 Danzig
Modelled shape of Danzig from its lightcurve
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date5 September 1929
Designations

MPC designation

(1419) Danzig

Named after

German name of the
Polish city of Gdańsk[2]

Alternative designations

1929 RF · 1936 RD
1952 HJ4 · 1957 WO1
A917 GA

Minor planet category

  • Flora[4] · background[5][6]
  • Orbital characteristics[3]
    Epoch 16 February 2017 (JD 2457800.5)
    Uncertainty parameter 0
    Observation arc99.90 yr (36,489 days)
    Aphelion2.6285 AU
    Perihelion1.9570 AU

    Semi-major axis

    2.2927 AU
    Eccentricity0.1465

    Orbital period (sidereal)

    3.47 yr (1,268 days)

    Mean anomaly

    356.63°

    Mean motion

    0° 17m 2.04s / day
    Inclination5.7254°

    Longitude of ascending node

    213.53°

    Argument of perihelion

    232.65°
    Physical characteristics

    Mean diameter

    14.059±0.096km[7]
    14.139km[8]
    14.997±0.382km[9]
    15.09±0.22km[10]

    Synodic rotation period

  • 8.1202±0.0001h[12]
  • Pole ecliptic latitude

    (22.0°, 76.0°) (λ11)[13]

    Geometric albedo

    0.2324[14][8]
    0.2388±0.0462[7]
    0.250±0.009[10]
    0.260±0.023[9]

    Spectral type

    S (family-based)[14]

    Absolute magnitude (H)

    11.20[9] · 11.3[3][10] · 11.45±0.14[14][8][11] · 11.45[7] · 11.55±1.00[15]

    1419 Danzig (prov. designation: 1929 RF) is a highly elongated Flora asteroid from the inner regions of the asteroid belt. It was discovered on 5 September 1929, by German astronomer Karl ReinmuthatHeidelberg Observatory in southwest Germany.[1] The stony S-type asteroid has a rotation period of 8.1 hours and measures approximately 14 kilometers (8.7 miles) in diameter. It was named for the city of Gdańsk (German: Danzig).[2]

    Classification and orbit[edit]

    When applying the synthetic hierarchical clustering method (HCM) by Nesvorný,[4] Danzig is a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.[16]: 23  However, according to the 1995 HCM-analysis by Zappalà,[6] and HCM-analysis by Milani and Knežević (AstDys), it is a background asteroid. The latter HCM-analysis does not recognize the Flora asteroid clan.[5]

    Danzig orbits the Sun at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,268 days). Its orbit has an eccentricity of 0.15 and an inclination of 6° with respect to the ecliptic.[3] In 1917, it was first observed as A917 GAatSimeiz Observatory (and Heidelberg on the following night), extending the body's observation arc by 12 years prior to its official discovery observation at Heidelberg.[1]

    Naming[edit]

    This minor planet was named after the now Polish city and port on the Baltic sea, Gdańsk (German: Danzig). The city was also honored by another minor planet, 764 Gedania.[2] Naming citation was first mentioned in The Names of the Minor PlanetsbyPaul Herget in 1955 (H 128)[2]

    Physical characteristics[edit]

    The overall spectral type for Florian asteroid is that of a stony S-type.[16]: 23 

    Rotation period and pole[edit]

    Lightcurve-based 3D-model of Danzig

    In November 1988, Polish astronomer Wiesław Wiśniewski obtained a rotational lightcurveofDanzig from photometric observations. It gave a well-defined rotation periodof8.0±0.1 hours with a brightness variation of 0.92 magnitude (U=3).[11] In October 2002, another lightcurve obtained by Italian and French amateur astronomers Silvano Casulli and Laurent Bernasconi gave a concurring period of 8.1202±0.0001 hours and an amplitude of 0.81 magnitude (U=3).[12] While Danzig has an average rotation period, it has a high brightness variation, which indicates that the body has a non-spheroidal shape. In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue (UAPC) and other sources gave a period 8.11957±0.00005 hours, as well as a spin axis of (22.0°, 76.0°) in ecliptic coordinates (λ, β) (U=n.a.).[13]

    Diameter and albedo[edit]

    According to the surveys carried out by the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Danzig measures 14.059 and 15.09 kilometers in diameter and its surface has an albedo between 0.238 and 0.260.[7][9][10] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data, that is, an albedo of 0.2324 and a diameter of 14.139 kilometers with an absolute magnitude of 11.45.[14][8]

    References[edit]

    1. ^ a b c d "1419 Danzig (1929 RF)". Minor Planet Center. Retrieved 5 April 2017.
  • ^ a b c d Schmadel, Lutz D. (2007). "(1419) Danzig". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 114. doi:10.1007/978-3-540-29925-7_1420. ISBN 978-3-540-00238-3.
  • ^ a b c d "JPL Small-Body Database Browser: 1419 Danzig (1929 RF)" (2017-03-08 last obs.). Jet Propulsion Laboratory. Retrieved 5 April 2017.
  • ^ a b "Asteroid 1419 Danzig – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 16 March 2020.
  • ^ a b "Asteroid 1419 Danzig – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 16 March 2020.
  • ^ a b Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families". NASA Planetary Data System: EAR-A-5-DDR-FAMILY-V4.1. Retrieved 16 March 2020.} (PDS main page)
  • ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  • ^ a b c d Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026.
  • ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8.
  • ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  • ^ a b c Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. 26: 1511. Bibcode:1995LPI....26.1511W.
  • ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1419) Danzig". Geneva Observatory. Retrieved 5 April 2017.
  • ^ a b Hanus, J.; Durech, J.; Broz, M.; Warner, B. D.; Pilcher, F.; Stephens, R.; et al. (June 2011). "A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method". Astronomy & Astrophysics. 530: 16. arXiv:1104.4114. Bibcode:2011A&A...530A.134H. doi:10.1051/0004-6361/201116738.
  • ^ a b c d "LCDB Data for (1419) Danzig". Asteroid Lightcurve Database (LCDB). Retrieved 5 April 2017.
  • ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.
  • ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
  • External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=1419_Danzig&oldid=1195682108"

    Categories: 
    Minor planet object articles (numbered)
    Flora asteroids
    Discoveries by Karl Wilhelm Reinmuth
    Named minor planets
    Astronomical objects discovered in 1929
    Hidden categories: 
    Use dmy dates from October 2019
    Articles containing German-language text
    Articles with JPL SBDB identifiers
    Articles with MPC identifiers
     



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