Astronomy:7687 Matthias
| Discovery [1] | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten-G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 24 September 1960 |
| Designations | |
| (7687) Matthias | |
| Named after | Matthias Busch [1] (German amateur astronomer) |
| 2099 P-L · 1986 EH2 1993 GK | |
| Minor planet category | main-belt [1][2] · (inner) Flora [3] |
| Orbital characteristics [2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.75 yr (23,284 d) |
| |{{{apsis}}}|helion}} | 2.5327 AU |
| |{{{apsis}}}|helion}} | 2.0074 AU |
| 2.2700 AU | |
| Eccentricity | 0.1157 |
| Orbital period | 3.42 yr (1,249 d) |
| Mean anomaly | 131.81° |
| Mean motion | 0° 17m 17.52s / day |
| Inclination | 5.7774° |
| Longitude of ascending node | 199.13° |
| 333.08° | |
| Physical characteristics | |
| Mean diameter | 3.488±0.233 km[4] 3.9 km (est. at 0.24)[5] |
| Geometric albedo | 0.24 (Flora albedo)[5] 0.333±0.070[4] |
| S (SDSS-MOC)[6] | |
| Absolute magnitude (H) | 14.2[1][2] |
7687 Matthias, provisional designation 2099 P-L, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 4 kilometers (2 miles) in diameter. It was discovered on 24 September 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California. The S-type asteroid was named for German amateur astronomer Matthias Busch.[1]
Orbit and classification
Matthias is a member of the Flora family (402),[3] a giant asteroid family and the largest family of stony asteroids in the main-belt.[7] It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,249 days; semi-major axis of 2.27 AU). Its orbit has an eccentricity of 0.12 and an inclination of 6° with respect to the ecliptic.[2] The body's observation arc begins with a precovery taken at Palomar in October 1953, or seven years prior to its official discovery observation.[1]
Palomar–Leiden survey
Physical characteristics
In the SDSS-based taxonomy, Matthias is a common, stony S-type asteroid.[6] It has an absolute magnitude of 14.2.[1][2] As of 2018, no rotational lightcurve of Matthias has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Matthias measures 3.488 kilometers in diameter and its surface has an albedo of 0.333.[4] Alternatively, the asteroid measures 3.9 kilometers, based on a generic magnitude-to-diameter conversion with an albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family.[5]
Naming
This minor planet was named after German amateur astronomer Matthias Busch (born 1968), an observer and discoverer of minor planets at the Starkenburg Observatory in Heppenheim, Germany. The asteroid's name was proposed by Lutz Schmadel and its official citation was published by the Minor Planet Center on 8 December 1998 (M.P.C. 33387).[8]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "7687 Matthias (2099 P-L)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=7687.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "JPL Small-Body Database Browser: 7687 Matthias (2099 P-L)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007687.
- ↑ 3.0 3.1 "Asteroid 7687 Matthias". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=7687+Matthias.
- ↑ 4.0 4.1 4.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M.
- ↑ 5.0 5.1 5.2 "Asteroid Size Estimator". CNEOS NASA/JPL. https://cneos.jpl.nasa.gov/tools/ast_size_est.html.
- ↑ 6.0 6.1 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics 510: 12. doi:10.1051/0004-6361/200913322. Bibcode: 2010A&A...510A..43C. https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab. Retrieved 30 October 2019. (PDS data set)
- ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
<ref> tag with name "MPC-discoverers" defined in <references> is not used in prior text.External links
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 7687 Matthias at AstDyS-2, Asteroids—Dynamic Site
- 7687 Matthias at the JPL Small-Body Database
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