1689 Floris-Jan

Last updated

1689 Floris-Jan
Discovery [1]
Discovered by H. van Gent
Discovery site Johannesburg Obs.
(Leiden Southern Station)
Discovery date16 September 1930
Designations
(1689) Floris-Jan
Named after
Floris-Jan van der Meulen
(Contest Winner) [2]
1930 SO ·1926 PG
1928 DN ·1934 VV
1943 AC ·1949 OF
1949 ON1 ·1949 OY
1951 CW ·1966 BP
main-belt  ·(inner) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 89.19 yr (32,577 days)
Aphelion 2.9545 AU
Perihelion 1.9461 AU
2.4503 AU
Eccentricity 0.2058
3.84 yr (1,401 days)
218.98°
0° 15m 25.2s / day
Inclination 6.3757°
123.19°
265.10°
Physical characteristics
Dimensions13.743±1.905 km [4]
13.99±0.23 km [5]
16.122±4.950 km [6]
16.21 km (taken) [3]
16.213 km [7]
0.083 h (fragm.) [8]
144.85±0.20 h [9]
145 h [10]
0.1271±0.0508 [6]
0.1353 [7]
0.175±0.050 [4]
0.184±0.007 [5]
S [3]
B–V = 0.685 [1]
U–B = 0.265 [1]
11.74±0.05 [3] [7] [9]  ·11.79±0.19 [11]  ·11.82 [1] [4] [5] [6]

    1689 Floris-Jan, provisional designation 1930 SO, is a stony asteroid and a slow rotator from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. Discovered by Hendrik van Gent in 1930, it was named after a contest winner of an exhibition at Leiden Observatory.

    Contents

    Discovery

    The asteroid was discovered on 16 September 1930, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. [12] It was independently discovered by Soviet astronomer Evgenii Skvortsov at the Crimean Simeiz Observatory five days later. [2]

    Orbit and classification

    Floris-Jan orbits the Sun in the inner main-belt at a distance of 1.9–3.0  AU once every 3 years and 10 months (1,401 days). Its orbit has an eccentricity of 0.21 and an inclination of 6° with respect to the ecliptic. [1] First identified as 1926 PG at Simeiz Observatory in 1926, the body's observation arc begins 3 days after its official discovery observation at Johannesburg in 1930. [12]

    Physical characteristics

    Slow rotator

    In the 1980s, photometric lightcurve observations already revealed that Floris-Jan is a very slow rotator with a rotation period of 145 hours and a brightness variation of 0.4 magnitude ( U=3 ). [10] At the time, this six-day period was a new record among all minor planets with a known rotation period, and it was assumed, that Floris-Jan might also be a tumbling asteroid with a non-principal axis rotation. [3] [9]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Floris-Jan measures between 13.74 and 16.12 kilometers in diameter, and its surface has an albedo between 0.127 and 0.184. [4] [5] [6] The Collaborative Asteroid Lightcurve Link agrees with Petr Pravec's revised WISE-data, that is an albedo of 0.135 and a diameter of 16.21 kilometers based on an absolute magnitude of 11.74. [3]

    Naming

    This minor planet was named for Floris-Jan van der Meulen, the 5,000th visitor to a 14-day astronomical exhibition at the Leiden Observatory. [2] The official naming citation was published by the Minor Planet Center on 1 March 1973 ( M.P.C. 3470). [13]

    Related Research Articles

    789 Lena, provisional designation 1914 UU, is a metallic asteroid from the middle region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 24 June 1914, by Soviet–Russian astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula, and named after the discoverer's mother.

    Lagrangea, provisional designation 1923 OU, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 12 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Italian mathematician and astronomer Joseph-Louis Lagrange.

    1057 Wanda, provisional designation 1925 QB, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 43 kilometers in diameter. It was discovered by Grigory Shajn at the Simeiz Observatory in 1925, and later named after Polish–Soviet writer Wanda Wasilewska. The asteroid has a rotation period of 28.8 hours.

    1059 Mussorgskia, provisional designation 1925 OA, is a background asteroid from the central regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 19 July 1925, by Soviet astronomer Vladimir Albitsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for Russian composer Modest Mussorgsky. The X- or C-type asteroid has a rotation period of 5.636 hours.

    1074 Beljawskya, provisional designation 1925 BE, is a Themistian asteroid from the outer region of the asteroid belt, approximately 48 kilometers in diameter.

    1099 Figneria, provisional designation 1928 RQ, is an asteroid from the background population of the outer regions of the asteroid belt, approximately 26 kilometers in diameter. Discovered by Grigory Neujmin at Simeiz Observatory in 1928, the asteroid was later named after Russian revolutionary activist Vera Figner.

    1113 Katja, provisional designation 1928 QC, is a background asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered by Pelageya Shajn at the Simeiz Observatory in 1928, and named after Ekaterina Iosko, a staff member at the discovering observatory.

    1120 Cannonia, provisional designation 1928 RV, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. Discovered by Pelageya Shajn at Simeiz in 1928, it was named after American astronomer Annie Jump Cannon.

    1123 Shapleya, provisional designation 1928 ST, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 21 September 1928, by Russian astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula. It was named after American astronomer Harlow Shapley.

    <span class="mw-page-title-main">1129 Neujmina</span> Eos asteroid

    1129 Neujmina is an Eos asteroid from the outer regions of the asteroid belt. It was discovered on 8 August 1929, by astronomer Praskoviya Parchomenko at the Simeiz Observatory on the Crimean peninsula. The stony S-type asteroid has a rotation period of 5.1 hours and measures approximately 34 kilometers in diameter. It was named after Soviet astronomer Grigory Neujmin.

    <span class="mw-page-title-main">1137 Raïssa</span> Main-belt asteroid

    1137 Raïssa is a stony background asteroid and slow rotator, approximately 22 kilometers in diameter, located in the inner regions of the asteroid belt. It was discovered by Grigory Neujmin at Simeiz Observatory in 1929, and named in memory of Raïssa Maseeva, who worked at the Pulkovo Observatory.

    <span class="mw-page-title-main">1140 Crimea</span> Stony asteroid

    1140 Crimea, provisional designation 1929 YC, is a stony asteroid from the middle region of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 30 December 1929, by Soviet astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula, after which it was named.

    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. The asteroid was named for the Bjarmaland mentioned in Norse sagas.

    1166 Sakuntala, provisional designation 1930 MA, is a stony background asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. Discovered by Praskovjya Parchomenko at Simeiz Observatory in 1930, the asteroid was named after the figure of Shakuntala from an ancient Indian drama.

    1717 Arlon, provisional designation 1954 AC, is a binary Florian asteroid from the inner regions of the asteroid belt, approximately 8.5 kilometers in diameter.

    1736 Floirac, provisional designation 1967 RA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8.7 kilometer in diameter.

    1605 Milankovitch, provisional designation 1936 GA, is an Eoan asteroid from the outer region of the asteroid belt, approximately 31 kilometers in diameter. It was named after Serbian scientist Milutin Milanković.

    2122 Pyatiletka, provisional designation 1971 XB, is a stony asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter.

    1306 Scythia, provisional designation 1930 OB, is a dark Ursula asteroid from the outer regions of the asteroid belt, approximately 72 kilometers in diameter. It was discovered on 22 July 1930, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for the historic region of Scythia.

    <span class="mw-page-title-main">1289 Kutaïssi</span> Stony Koronian asteroid

    1289 Kutaïssi is a stony Koronian asteroid from the outer region of the asteroid belt. Discovered by Grigory Neujmin at Simeiz Observatory in 1933, it was later named after the Georgian city of Kutaisi. The S-type asteroid has a rotation period of 3.6 hours and measures approximately 22 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 1689 Floris-Jan (1930 SO)" (2017-05-05 last obs.). Jet Propulsion Laboratory . Retrieved 6 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1689) Floris-Jan". Dictionary of Minor Planet Names – (1689) Floris-Jan. Springer Berlin Heidelberg. p. 134. doi:10.1007/978-3-540-29925-7_1690. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (1689) Floris-Jan". Asteroid Lightcurve Database (LCDB). Retrieved 22 December 2016.
    4. 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 . Retrieved 22 December 2016.
    5. 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)
    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.
    7. 1 2 3 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 22 December 2016.
    8. ↑ Pych, W. (March 1999). "Short period oscillations in the light curve of the asteroid 1689 Floris-Jan". Astronomy and Astrophysics. 343: L75–L77. arXiv: astro-ph/9806384 . Bibcode:1999A&A...343L..75P . Retrieved 22 December 2016.
    9. 1 2 3 Harris, A. W.; Young, J. W. (October 1989). "Asteroid lightcurve observations from 1979-1981". Icarus. 81 (2): 314–364. Bibcode:1989Icar...81..314H. doi:10.1016/0019-1035(89)90056-0. ISSN   0019-1035 . Retrieved 22 December 2016.
    10. 1 2 Schober, H. J.; Surdej, J.; Harris, A. W.; Young, J. W. (November 1982). "The six-day rotation period of 1689 Floris-Jan - A new record among slowly rotating asteroids". Astronomy and Astrophysics. 115 (2): 257–262.ResearchsupportedbytheOsterreichischerFondszurForderungderwissenschaftlichenForschung. Bibcode:1982A&A...115..257S . Retrieved 22 December 2016.
    11. ↑ 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 . Retrieved 22 December 2016.
    12. 1 2 "1689 Floris-Jan (1930 SO)". Minor Planet Center. Retrieved 22 December 2016.
    13. ↑ Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.