Astronomy:776 Berbericia
.png) A three-dimensional model of 776 Berbericia based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | A. Massinger |
| Discovery site | Heidelberg Obs. |
| Discovery date | 24 January 1914 |
| Designations | |
| (776) Berbericia | |
| Pronunciation | /bɜːrbəˈrɪʃiə/ |
| 1914 TY | |
| Adjectives | Berberician |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 102.05 yr (37275 d) |
| |{{{apsis}}}|helion}} | 3.4131 astronomical unit|AU (510.59 Gm) |
| |{{{apsis}}}|helion}} | 2.4477 AU (366.17 Gm) |
| 2.9304 AU (438.38 Gm) | |
| Eccentricity | 0.16471 |
| Orbital period | 5.02 yr (1832.3 d) |
| Mean anomaly | 235.69° |
| Mean motion | 0° 11m 47.328s / day |
| Inclination | 18.237° |
| Longitude of ascending node | 79.729° |
| 307.132° | |
| Physical characteristics | |
| Mean radius | 75.585±2 km[1] 76.145 ± 2.125 km[2] |
| Mass | (2.20 ± 2.71) × 1018 kg[2] |
| Mean density | 1.18 ± 1.46 g/cm3[2] |
| Rotation period | 7.66701 h[3] 7.668 h (0.3195 d)[1] |
| Geometric albedo | 0.0655±0.004 |
| C[4] (Tholen) | |
| Absolute magnitude (H) | 7.68 |
776 Berbericia is a minor planet orbiting the Sun. A main-belt C-type asteroid,[4] it was discovered on 24 January 1914 by astronomer Adam Massinger at Heidelberg Observatory in southwest Germany. It was named by Max Wolf in honor of Adolf Berberich (1861–1920), a German astronomer.[5][6] The spectra of the asteroid displays evidence of aqueous alteration.[4]
Description
In the late 1990s, a network of astronomers worldwide gathered lightcurve data that was ultimately used to derive the spin states and shape models of 10 new asteroids, including (776) Berbericia. The computed shape model for this asteroid is described as "asymmetric with sharp edges".[3][7]
Richard P. Binzel and Schelte Bus further added to the knowledge about this asteroid in a lightwave survey published in 2003. This project was known as Small Main-belt Asteroid Spectroscopic Survey, Phase II or SMASSII, which built on a previous survey of the main-belt asteroids. The visible-wavelength (0.435-0.925 micrometre) spectra data was gathered between August 1993 and March 1999.[8]
References
- ↑ 1.0 1.1 1.2 "776 Berbericia (1914 TY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=776;cad=1.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 3.0 3.1 Durech, J. et al. (April 2007), "Physical models of ten asteroids from an observers' collaboration network", Astronomy and Astrophysics 465 (1): 331–337, doi:10.1051/0004-6361:20066347, Bibcode: 2007A&A...465..331D, https://hal.science/hal-03801313/file/aa6347-06.pdf.
- ↑ 4.0 4.1 4.2 Fornasier, S. et al. (February 1999), "Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites", Astronomy and Astrophysics Supplement 135: 65−73, doi:10.1051/aas:1999161, Bibcode: 1999A&AS..135...65F, https://ui.adsabs.harvard.edu/link_gateway/1999A&AS..135...65F/PUB_PDF.
- ↑ JPL Small-Body Database Browser
- ↑ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN:3-540-00238-3.
- ↑ Durech, J.; Kaasalainen, M.; Marciniak, A.; Allen, W. H. et al. “Asteroid brightness and geometry,” Astronomy and Astrophysics, Volume 465, Issue 1, April I 2007, pp. 331–337.
- ↑ Bus, S., Binzel, R. P. Small Main-belt Asteroid Spectroscopic Survey, Phase II. EAR-A-I0028-4-SBN0001/SMASSII-V1.0. NASA Planetary Data System, 2003.
External links
- 776 Berbericia at AstDyS-2, Asteroids—Dynamic Site
- 776 Berbericia at the JPL Small-Body Database
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