Astronomy:2037 Tripaxeptalis
| Discovery [1] | |
|---|---|
| Discovered by | P. Wild |
| Discovery site | Zimmerwald Obs. |
| Discovery date | 25 October 1973 |
| Designations | |
| (2037) Tripaxeptalis | |
| Named after | Tripaxeptalis (fantasy name) (3 × 679 Pax = 7 × 291 Alice)[2] |
| 1973 UB · A917 SN | |
| Minor planet category | main-belt · Flora [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 43.52 yr (15,894 days) |
| |{{{apsis}}}|helion}} | 2.6046 AU |
| |{{{apsis}}}|helion}} | 1.9996 AU |
| 2.3021 AU | |
| Eccentricity | 0.1314 |
| Orbital period | 3.49 yr (1,276 days) |
| Mean anomaly | 235.93° |
| Mean motion | 0° 16m 55.92s / day |
| Inclination | 4.2509° |
| Longitude of ascending node | 9.5018° |
| 346.18° | |
| Physical characteristics | |
| Dimensions | 5.956±0.213 km[4][5] 6.21 km (calculated)[3] |
| Rotation period | 2.33±0.01 h[6] |
| Geometric albedo | 0.198±0.032[4][5] 0.24 (assumed)[3] |
| S [3] | |
| Absolute magnitude (H) | 13.2[1][3] · 13.44±0.12[7] · 13.5[4] |
2037 Tripaxeptalis, provisional designation 1973 UB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.
It was discovered on 25 October 1973, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.[8] The asteroid's constructed name "Tripaxeptalis" derives from a numbers game with the asteroids 679 Pax and 291 Alice.[2]
Orbit and classification
Tripaxeptalis is a member of the Flora family, one of the largest collisional populations of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,276 days). Its orbit has an eccentricity of 0.13 and an inclination of 4° with respect to the ecliptic.[1]
In September 1917, the asteroid was first identified as A917 SN at Simeiz Observatory on the Crimean peninsula. The body's observation arc begins with its official discovery observation at Zimmerwald.[8]
Physical characteristics
Rotation period
In January 2006, a rotational lightcurve of Tripaxeptalis was obtained from photometric observations by astronomer Adrián Galád at Modra Observatory in Slovakia. Lightcurve analysis gave a rotation period of 2.33 hours with a brightness variation of 0.10 magnitude ({{{1}}}). The ambiguous lightcurve gave an alternative period solution of 2.23 hours and an amplitude of 0.10.[6]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tripaxeptalis measures 5.956 kilometers in diameter and its surface has an albedo of 0.198.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its family – and calculates a diameter of 6.21 kilometers based on an absolute magnitude of 13.2.[3]
Naming
This minor planet's constructed name "Tripaxeptalis" (tri–Pax–hepta–Alice) refers to the fact that its number, 2037, matches 3 × 679 Pax as well as 7 × 291 Alice.[2] The approved naming citation was published by the Minor Planet Center on 1 June 1980 (M.P.C. 5359).[9]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 2037 Tripaxeptalis (1973 UB)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002037.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(2037) Tripaxeptalis". Dictionary of Minor Planet Names – (2037) Tripaxeptalis. Springer Berlin Heidelberg. p. 165. doi:10.1007/978-3-540-29925-7_2038. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (2037) Tripaxeptalis". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2037%7CTripaxeptalis.
- ↑ 4.0 4.1 4.2 4.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 5.0 5.1 5.2 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 28 June 2017.
- ↑ 6.0 6.1 Galad, Adrian (March 2008). "Several Byproduct Targets of Photometric Observations at Modra". The Minor Planet Bulletin 35 (1): 17–21. ISSN 1052-8091. Bibcode: 2008MPBu...35...17G. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35...17G. Retrieved 28 June 2017.
- ↑ 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 28 June 2017.
- ↑ 8.0 8.1 "2037 Tripaxeptalis (1973 UB)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2037.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
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
- 2037 Tripaxeptalis at AstDyS-2, Asteroids—Dynamic Site
- 2037 Tripaxeptalis at the JPL Small-Body Database
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