Astronomy:(369623) 2011 DY5
| Discovery[1] | |
|---|---|
| Discovered by | C. Demeautis Jean-Marie Lopez |
| Discovery site | Pises Obs. |
| Discovery date | 30 August 2008 |
| Designations | |
| (369623) 2011 DY5 | |
| 2011 DY5 · 2008 QZ41 | |
| Minor planet category | main-belt · (outer) Tirela[2] |
| Orbital characteristics[1] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8.67 yr (3,168 d) |
| |{{{apsis}}}|helion}} | 3.6022 AU |
| |{{{apsis}}}|helion}} | 2.6289 AU |
| 3.1155 AU | |
| Eccentricity | 0.1562 |
| Orbital period | 5.50 yr (2,009 d) |
| Mean anomaly | 108.05° |
| Mean motion | 0° 10m 45.12s / day |
| Inclination | 17.608° |
| Longitude of ascending node | 168.34° |
| 340.61° | |
| Physical characteristics | |
| Mean diameter | 3.2 km (est. at 0.07)[3] |
| Absolute magnitude (H) | 16.0[1] · 16.1[4] |
(369623) 2011 DY5, provisional designation 2011 DY5, is a Tirela asteroid from the outer regions of the asteroid belt, approximately 3.2 kilometers (2.0 miles) in diameter. It was discovered on 30 August 2008, by French amateur astronomers Christophe Demeautis and Jean-Marie Lopez at the Pises Observatory in southern France.[4]
Orbit and classification
2011 DY5 is a member of the Tirela family,[2] a large asteroid family, also known as the Klumpkea family, named after the largest members 1040 Klumpkea and 1400 Tirela. The family consists of more than a thousand members and may be further divided into 8 different parts.[5]:23
It orbits the Sun in the outer asteroid belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (2,009 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.16 and an inclination of 18° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation as 2008 QZ41 at Pises in August 2008.[4]
Physical characteristics
Based on a generic magnitude-to-diameter conversion, 2011 DY5 measures 3.2 kilometers in diameter for an absolute magnitude of 16.0 and an assumed albedo of 0.07,[3] which is a typical value for a Tirela asteroid.[5]:23 As of 2018, no rotational lightcurve has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.[1]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 21 August 2013 (M.P.C. 84643).[6] As of 2018, it has not been named.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 369623 (2011 DY5)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2369623. Retrieved 3 March 2018.
- ↑ 2.0 2.1 "Asteroid (369623) 2011 DY5 – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=369623#Asteroid%20369623EAR-A-VARGBDET-5-NESVORNYFAM-V3.0. Retrieved 27 October 2019.
- ↑ 3.0 3.1 "Asteroid Size Estimator". CNEOS NASA/JPL. https://cneos.jpl.nasa.gov/tools/ast_size_est.html.
- ↑ 4.0 4.1 4.2 4.3 "369623 (2011 DY5)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=369623. Retrieved 3 March 2018.
- ↑ 5.0 5.1 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. Retrieved 3 March 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- Asteroid families classification: exploiting very large data sets, Milani et al. (2014)
- Discovery Circumstances: Numbered Minor Planets (365001)-(370000) – Minor Planet Center
- (369623) 2011 DY5 at the JPL Small-Body Database
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