1054 Forsytia
Clash Royale CLAN TAG#URR8PPP
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 20 November 1925 |
| Designations | |
| MPC designation | (1054) Forsytia |
| Pronunciation | /fɔːrˈsɪtiə/ or /fɔːrˈsaɪtiə/ |
Named after | Forsythia (flowering plant)[2] |
Alternative designations | 1925 WD · 1962 DD A907 EA |
Minor planet category | main-belt · (outer) [3] background [4] |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
| Observation arc | 110.32 yr (40,295 days) |
| Aphelion | 3.3198 AU |
| Perihelion | 2.5284 AU |
Semi-major axis | 2.9241 AU |
| Eccentricity | 0.1353 |
Orbital period | 5.00 yr (1,826 days) |
Mean anomaly | 165.01° |
Mean motion | 0° 11m 49.56s / day |
| Inclination | 10.849° |
Longitude of ascending node | 85.888° |
Argument of perihelion | 294.19° |
Physical characteristics | |
| Dimensions | 7001428670000000000♠42.867±11.18 km[5] 45.42 km (derived)[3] 7001454700000000000♠45.47±4.3 km[6] 7001464000000000000♠46.40±13.38 km[7] 7001466900000000000♠46.69±15.08 km[8] 7001477800000000000♠47.780±3.344 km[9] 7001530400000000000♠53.04±0.71 km[10] |
Rotation period | 7000765000000000000♠7.650±0.001 h[11] |
Geometric albedo | 6998350000000000000♠0.035±0.013[9] 6998400000000000000♠0.04±0.07[7] 6998480000000000000♠0.048±0.002[10] 6998500000000000000♠0.05±0.03[8] 0.0592 (derived)[3] 6998648000000000000♠0.0648±0.014[6] 6998750000000000000♠0.0750±0.0441[5] |
Spectral type | C (assumed)[3] |
Absolute magnitude (H) | 10.12[5] · 7001101199999999999♠10.12±0.51[12] · 10.30[6][10] · 10.40[1][3][8] · 10.46[7] · 10.87[9] |
1054 Forsytia (/fɔːrˈsɪtiə/ or /fɔːrˈsaɪtiə/), provisional designation 1925 WD, is a dark background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 20 November 1925, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[13] It is named after the flowering plant forsythia, and marks the beginning of a sequence of 28 thematically named asteroids by the discoverer.[2]
Contents
1 Orbit and classification
2 Physical characteristics
2.1 Rotation period
2.2 Diameter and albedo
3 Naming
3.1 Reinmuth's flowers
4 References
5 External links
Orbit and classification
Forsytia is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 2.5–3.3 AU once every 5.00 years (1,826 days; semi-major axis of 2.92 AU). Its orbit has an eccentricity of 0.14 and an inclination of 11° with respect to the ecliptic.[1]
The asteroid was first observed as A907 EA at Heidelberg in March 1907. The body's observation arc begins with its official discovery observation in November 1925.[13]
Physical characteristics
Forsytia is an assumed carbonaceous C-type asteroid.[3]
Rotation period
In March 2002, a rotational lightcurve of Forsytia was obtained from photometric observations by American amateur astronomer John Gross at his Sonoran Skies Observatory (G94) in Arizona. Lightcurve analysis gave a well-defined rotation period of 7.650 hours with a brightness amplitude of 0.23 magnitude (U=3).[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, Forsytia measures between 42.867 and 53.04 kilometers in diameter and its surface has an albedo between 0.035 and 0.0750.[5][6][7][8][9][10]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0592 and a diameter of 45.42 kilometers based on an absolute magnitude of 10.4.[3]
Naming
This minor planet was named after forsythia, a genus of flowering shrubs in the Oleaceae family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 100).[2]
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 this asteroid, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[2]
References
^ abcd "JPL Small-Body Database Browser: 1054 Forsytia (1925 WD)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 10 January 2018..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
^ abcd Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1054) Forsytia. Springer Berlin Heidelberg. p. 90. ISBN 978-3-540-00238-3. Archived from the original on 24 September 2017. Retrieved 10 January 2018.CS1 maint: Unfit url (link)
^ abcdefg "LCDB Data for (1054) Forsytia". Asteroid Lightcurve Database (LCDB). Retrieved 10 January 2018.
^ ab "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 10 January 2018.
^ abcd Masiero, Joseph R.; Nugent, C.; Mainzer, A. K.; Wright, E. L.; Bauer, J. M.; Cutri, R. M.; et al. (October 2017). "NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos" (PDF). The Astronomical Journal. 154 (4): 10. arXiv:1708.09504. Bibcode:2017AJ....154..168M. doi:10.3847/1538-3881/aa89ec. Retrieved 10 January 2018.
^ abcd Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Archived from the original on 2016-06-03. Retrieved 10 January 2018.
^ abcd 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. Retrieved 10 January 2018.
^ abcd 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. Retrieved 10 January 2018.
^ abcd 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 10 January 2018.
^ abcd 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. Retrieved 10 January 2018.
^ ab Gross, John (September 2003). "Sonoran Skies Observatory lightcurve results for asteroids 1054, 1390, 1813 1838, 2988, 3167, 4448, and 5262". The Minor Planet Bulletin. 30 (3): 44–46. Bibcode:2003MPBu...30...44G. ISSN 1052-8091. Retrieved 10 January 2018.
^ 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 10 January 2018.
^ ab "1054 Forsytia (1925 WD)". Minor Planet Center. Retrieved 10 January 2018.
External links
Asteroid Lightcurve Database (LCDB), query form (info)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
1054 Forsytia at the JPL Small-Body Database
Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
