3687_Dzus
3687 Dzus, provisional designation A908 TC, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 31 kilometers in diameter. It was discovered by German astronomer August Kopff at Heidelberg-Königstuhl State Observatory on 7 October 1908.[10]
| Discovery [1] | |
|---|---|
| Discovered by | A. Kopff |
| Discovery site | Heidelberg Obs. |
| Discovery date | 7 October 1908 |
| Designations | |
| (3687) Dzus | |
Named after | Paul K. Dzus (MPC volunteer)[2] |
| A908 TC · 1952 HM3 1970 GD2 · 1980 TO8 1980 TX · 1984 NC | |
| main-belt · (middle) | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.33 yr (39,567 days) |
| Aphelion | 3.2735 AU |
| Perihelion | 2.1814 AU |
| 2.7275 AU | |
| Eccentricity | 0.2002 |
| 4.50 yr (1,645 days) | |
| 84.307° | |
| 0° 13m 7.68s / day | |
| Inclination | 15.798° |
| 224.89° | |
| 113.79° | |
| Physical characteristics | |
| Dimensions | 28.61±2.2 km[3] 30.932±0.250 km[4] 32.36±0.40 km[5] 34.481±0.343 km[6] |
| 7.44±0.01 h[7] | |
| 0.0373±0.0070[6] 0.043±0.001[5] 0.046±0.005[4] 0.0542±0.009[3] | |
| SMASS = Ch [1] · C [8] | |
| 11.4[1] · 11.5[3][5][6][8] · 11.57±0.19[9] | |
Dzus orbits the Sun in the central main-belt at a distance of 2.2–3.3 AU once every 4 years and 6 months (1,645 days). Its orbit has an eccentricity of 0.20 and an inclination of 16° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery observation in 1908.[10]
The C-type asteroid is characterized as a Ch subtype in the SMASS classification.[1]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Dzus measures between 28.6 and 34.5 kilometers in diameter and its surface has an albedo between 0.038 and 0.054.[3][4][5][6] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS; that is an albedo of 0.038 and a diameter of 28.6 kilometers, based on an absolute magnitude of 11.5.[8]
Rotation period
A fragmentary lightcurve of Dzus was obtained from photometric observations made by Robert Stephens at the Santana Observatory (646) in Rancho Cucamonga, California, during April to June 2002. It showed a rotation period of 7.44±0.01 hours with a brightness variation of 0.25±0.04 in magnitude during each rotation (U=1).[7]
This minor planet was named by Brian Geoffrey Marsden, long-time director of the Minor Planet Center (MPC), in honor of Paul K. Dzus (b. 1969) in appreciation of his helpful assistance since October 1987, much of the time as a volunteer.[2] The official naming citation was published by the MPC on 23 December 1988 (M.P.C. 14029).[11]
- "JPL Small-Body Database Browser: 3687 Dzus (A908 TC)" (2017-02-04 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017.
- Schmadel, Lutz D. (2007). "(3687) Dzus". Dictionary of Minor Planet Names – (3687) Dzus. Springer Berlin Heidelberg. p. 310. doi:10.1007/978-3-540-29925-7_3685. ISBN 978-3-540-00238-3.
- Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
- 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. Retrieved 14 September 2016.
- 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)
- 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.
- Stephens, R. D. (December 2002), "Photometry of 769 Tatjana, 818 Kapteyna, 1922 Zulu, and 3687 Dzus", The Minor Planet Bulletin, 29: 72, Bibcode:2002MPBu...29...72S
- "LCDB Data for (3687) Dzus". Asteroid Lightcurve Database (LCDB). Retrieved 30 October 2016.
- 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 30 October 2016.
- "3687 Dzus (A908 TC)". Minor Planet Center. Retrieved 30 October 2016.
- "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 October 2016.
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- 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
- 3687 Dzus at AstDyS-2, Asteroids—Dynamic Site
- 3687 Dzus at the JPL Small-Body Database
