1250 Galanthus

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1250 Galanthus
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date25 January 1933
Designations
(1250) Galanthus
Pronunciation /ɡəˈlænθəs/ [2]
Named after
 Galanthus (snowdrop)
(herbaceous plants) [3]
1933 BD ·1971 OQ
main-belt  ·(middle)
background [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 84.84 yr (30,987 days)
Aphelion 3.2465 AU
Perihelion 1.8560 AU
2.5513 AU
Eccentricity 0.2725
4.08 yr (1,488 days)
249.60°
0° 14m 30.84s / day
Inclination 15.169°
292.02°
217.17°
Physical characteristics
Dimensions17.18±5.39 km [5]
19.394±0.152 km [6]
19.54±0.36 km [7]
20.062±0.112 km [8]
20.33±4.93 km [9]
21.00±2.9 km [10]
3.918±0.0009 h [11]
3.92 h [12]
0.04±0.02 [9]
0.0443±0.0069 [6]
0.0500±0.017 [10]
0.055±0.011 [8]
0.058±0.002 [7]
0.06±0.04 [5]
C (assumed) [13]
12.233±0.001(R) [11]  ·12.26 [1] [5] [6] [7] [10] [13]  ·12.52 [9]

    1250 Galanthus, provisional designation 1933 BD, is a dark background asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 25 January 1933, by German astronomer Karl Reinmuth at the Heidelberg Observatory. [14] The asteroid was named for the herbaceous plant Galanthus , also known as "snowdrop". [3]

    Contents

    Orbit and classification

    Galanthus is a non-family asteroid from the main belt's background population. [4] It orbits the Sun in the central main-belt at a distance of 1.9–3.2  AU once every 4 years and 1 month (1,488 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.27 and an inclination of 15° with respect to the ecliptic. [1] The body's observation arc begins at Heidelberg the night after its official discovery observation. [14]

    Physical characteristics

    Galanthus is an assumed carbonaceous C-type asteroid. [13]

    Rotation period

    In the early 1980s, a rotational lightcurve of Galanthus was obtained during a survey conducted by Richard P. Binzel at the McDonald Observatory, Texas. Lightcurve analysis gave a well-defined rotation period of 3.92 hours with a brightness variation of 0.28 magnitude ( U=3 ). [12] The period was confirmed from photometric observations by astronomers at the Palomar Transient Factory in October 2015, which gave a similar period of 3.918 hours and an amplitude of 0.22 magnitude ( U=2 ). [11]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Galanthus measures between 17.18 and 21.00 kilometers in diameter and its surface has an albedo between 0.04 and 0.06. [5] [6] [7] [8] [9] [10]

    The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0500 and a diameter of 21.0 kilometers based on an absolute magnitude of 12.26. [13]

    Naming

    This minor planet was named after the herbaceous plant Galanthus , also known as "snowdrop". [3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 115 ). [3]

    Reinmuth's flowers

    Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between (1009) and (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants). [15]

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    <span class="mw-page-title-main">1081 Reseda</span>

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    <span class="mw-page-title-main">1082 Pirola</span> Asteroid

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    1815 Beethoven, provisional designation 1932 CE1, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory. The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative). It was named after Ludwig van Beethoven.

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    1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew.

    <span class="mw-page-title-main">1555 Dejan</span>

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    1233 Kobresia, provisional designation 1931 TG2, is a carbonaceous background asteroid from the central regions of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 10 October 1931, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named for the grass-like flowering plant Kobresia, a genus in the sedge family.

    2043 Ortutay, provisional designation 1936 TH, is a dark asteroid from the outer regions of the asteroid belt, approximately 45 kilometers in diameter. The asteroid was discovered by Hungarian astronomer György Kulin at the Konkoly Observatory, Budapest, on 12 November 1936. It was named after Hungarian ethnographer Gyula Ortutay.

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1250 Galanthus (1933 BD)" (2017-11-27 last obs.). Jet Propulsion Laboratory. Retrieved 31 December 2017.
    2. ↑ "Galanthus". Merriam-Webster.com Dictionary .
    3. 1 2 3 4 Schmadel, Lutz D. (2003). "(1250) Galanthus". Dictionary of Minor Planet Names – (1250) Galanthus. Springer Berlin Heidelberg. p. 102. doi:10.1007/978-3-540-29925-7_1251. ISBN   978-3-540-00238-3.
    4. 1 2 "Asteroid 1250 Galanthus – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv: 1509.02522 . Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID   9341381 . Retrieved 31 December 2017.
    6. 1 2 3 4 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. S2CID   35447010.
    7. 1 2 3 4 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)
    8. 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645 . Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. S2CID   119293330.
    9. 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 .
    10. 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T . Retrieved 22 October 2019.
    11. 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 31 December 2017.
    12. 1 2 Binzel, R. P.; Mulholland, J. D. (December 1983). "A photoelectric lightcurve survey of small main belt asteroids". Icarus. 56 (3): 519–533. Bibcode:1983Icar...56..519B. doi:10.1016/0019-1035(83)90170-7. ISSN   0019-1035 . Retrieved 31 December 2017.
    13. 1 2 3 4 "LCDB Data for (1250) Galanthus". Asteroid Lightcurve Database (LCDB). Retrieved 31 December 2017.
    14. 1 2 "1250 Galanthus (1933 BD)". Minor Planet Center. Retrieved 31 December 2017.
    15. ↑ Schmadel, Lutz D. (2007). "(1054) Forsytia". Dictionary of Minor Planet Names – (1054) Forsytia. Springer Berlin Heidelberg. p. 90. doi:10.1007/978-3-540-29925-7_1055. ISBN   978-3-540-00238-3.
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