1153 Wallenbergia

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1153 Wallenbergia
Discovery [1]
Discovered by S. Belyavskyj
Discovery site Simeiz Obs.
Discovery date5 September 1924
Designations
(1153) Wallenbergia
Named after
Georg Wallenberg [2] [a]
(German mathematician)
1924 SL ·1930 HH
main-belt  ·(inner) · Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 87.02 yr (31,784 days)
Aphelion 2.5489 AU
Perihelion 1.8428 AU
2.1958 AU
Eccentricity 0.1608
3.25 yr (1,189 days)
237.52°
0° 18m 10.44s / day
Inclination 3.3345°
280.54°
28.766°
Physical characteristics
Dimensions 8.02±1.81 km [4]
8.037±0.357 km [5]
9.36 km (derived) [3]
4.096±0.002 h [6]
4.116±0.0055 h [7]
4.12±0.070 h [8]
0.24 (assumed) [3]
0.37±0.14 [4]
0.433±0.091 [5]
S [3] [9]
11.985±0.002(R) [7]  ·12.00 [5]  ·12.040±0.100(R) [8]  ·12.1 [1]  ·12.28 [4]  ·12.31±0.08 [3] [6] [10]  ·12.49±0.22 [9]

    1153 Wallenbergia, provisional designation 1924 SL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 5 September 1924, by Soviet astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. [11] The asteroid was named after German mathematician Georg Wallenberg. [2]

    Contents

    Orbit and classification

    Wallenbergia is a member of the Flora family ( 402 ), a giant asteroid family and the largest family of stony asteroids in the main-belt. [3] It orbits the Sun in the inner main-belt at a distance of 1.8–2.5  AU once every 3 years and 3 months (1,189 days). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic. [1]

    The body's observation arc begins with its identification as 1930 HH at Johannesburg Observatory in April 1930, almost six years after its official discovery observation at Simeiz. [11]

    Physical characteristics

    Wallenbergia has been characterized as a stony S-type asteroid by PanSTARRS photometric survey. [9]

    Rotation period

    In September 1989, the first rotational lightcurve of Wallenbergia was obtained from photometric observations by Polish astronomer Wiesław Z. Wiśniewski at University of Arizona. Lightcurve analysis gave a well-defined rotation period of 4.096 hours with a brightness amplitude of 0.33 magnitude ( U=3 ). [6] Observations in the R-band at the Palomar Transient Factory in 2014, gave a period of 4.116 and 4.12 hours with an amplitude of 0.25 and 0.23 magnitude, respectively ( U=2/2 ). [7] [8]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wallenbergia measures 8.02 and 8.037 kilometers in diameter and its surface has an albedo of 0.37 and 0.433, respectively. [4] [5]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – taken from 8 Flora, the parent body of the Flora family – and derives a diameter of 9.36 kilometers based on an absolute magnitude of 12.31. [3]

    Naming

    This minor planet was named after German mathematician Georg Wallenberg (1864–1924). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 107 ). [2] [a]

    Notes

    1. 1 2 Wallenberg's middle name is likely "Jakob", not "James" as given in the Dictionary of Minor Planet Names

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1153 Wallenbergia (1924 SL)" (2017-05-06 last obs.). Jet Propulsion Laboratory . Retrieved 8 September 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1153) Wallenbergia". Dictionary of Minor Planet Names – (1153) Wallenbergia. Springer Berlin Heidelberg. p. 97. doi:10.1007/978-3-540-29925-7_1154. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (1153) Wallenbergia". Asteroid Lightcurve Database (LCDB). Retrieved 8 September 2017.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923 . Bibcode:2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63 .
    5. 1 2 3 4 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. S2CID   46350317 . Retrieved 8 September 2017.
    6. 1 2 3 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 . Retrieved 8 September 2017.
    7. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv: 1504.04041 . Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. S2CID   8342929 . Retrieved 8 September 2017.
    8. 1 2 3 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv: 1506.08493 . Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. S2CID   17093124 . Retrieved 8 September 2017.
    9. 1 2 3 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. S2CID   53493339 . Retrieved 8 September 2017.
    10. ↑ 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 . Retrieved 8 September 2017.
    11. 1 2 "1153 Wallenbergia (1924 SL)". Minor Planet Center. Retrieved 8 September 2017.
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