Astronomy:7959 Alysecherri
| Discovery [1] | |
|---|---|
| Discovered by | C. W. Hergenrother |
| Discovery site | Catalina Stn. |
| Discovery date | 2 August 1994 |
| Designations | |
| (7959) Alysecherri | |
| Named after | Alyse Cherri Smith (wife of discoverer)[2] |
| 1994 PK | |
| Minor planet category | main-belt · Hungaria [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.30 yr (23,850 days) |
| |{{{apsis}}}|helion}} | 2.1094 AU |
| |{{{apsis}}}|helion}} | 1.7760 AU |
| 1.9427 AU | |
| Eccentricity | 0.0858 |
| Orbital period | 2.71 yr (989 days) |
| Mean anomaly | 169.49° |
| Mean motion | 0° 21m 50.4s / day |
| Inclination | 19.263° |
| Longitude of ascending node | 235.79° |
| 100.40° | |
| Physical characteristics | |
| Dimensions | 3.05 km (calculated)[3] |
| Rotation period | 3.161±0.005 h[4] |
| Geometric albedo | 0.30 (assumed)[3] |
| E [3] | |
| Absolute magnitude (H) | 14.5[1][3] · 15.09±0.63[5] |
7959 Alysecherri, provisional designation 1994 PK, is a bright, stony Hungaria asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 2 August 1994, by American astronomer Carl Hergenrother at Steward Observatory's Catalina Station on Mt Bigelow near Tucson, Arizona.[6] The asteroid was named for the discoverer's wife, Alyse Cherri.[2]
Orbit and classification
The E-type asteroid is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun in the inner main-belt at a distance of 1.8–2.1 AU once every 2 years and 9 months (989 days). Its orbit has an eccentricity of 0.09 and an inclination of 19° with respect to the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1951, extending the asteroid's observation arc by 43 years prior to its discovery.[6]
Physical characteristics
A rotational lightcurve for this asteroid was obtained from photometric observations made by American astronomer Brian Warner at the U.S. Palmer Divide Observatory, Colorado, in July 2013. It gave a rotation period of 3.161±0.005 hours with a brightness amplitude of 0.13 in magnitude ({{{1}}}).[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 and calculates a diameter of 3.05 kilometers with an absolute magnitude of 14.5.[3]
Naming
This minor planet is named after the maiden name of the discovering astronomer's wife, Alyse Cherri Smith.[2] The official naming citation was published by the Minor Planet Center on 13 November 2008 (M.P.C. 64311).[7]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 7959 Alysecherri (1994 PK)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007959.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (7959) Alysecherri. Springer Berlin Heidelberg. p. 610. ISBN 978-3-540-29925-7. https://books.google.com/books?id=aeAg1X7afOoC&q=Alysecherri. Retrieved 14 May 2016.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (7959) Alysecherri". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=7959%7CAlysecherri.
- ↑ 4.0 4.1 Warner, Brian D. (January 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2013 June- September". The Minor Planet Bulletin 41 (1): 27–32. ISSN 1052-8091. Bibcode: 2014MPBu...41...27W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41...27W. Retrieved 17 December 2015.
- ↑ 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 14 May 2016.
- ↑ 6.0 6.1 "7959 Alysecherri (1994 PK)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=7959.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
External links
- The Palmer Divide Observatory: Tour given by Brian Warner on YouTube (time 4:03 min.)
- 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 (5001)-(10000) – Minor Planet Center
- 7959 Alysecherri at AstDyS-2, Asteroids—Dynamic Site
- 7959 Alysecherri at the JPL Small-Body Database
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