Astronomy:654 Zelinda
From HandWiki
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 4 January 1908 |
| Designations | |
| (654) Zelinda | |
| 1908 BM | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.29 yr (39553 d) |
| |{{{apsis}}}|helion}} | 2.8288 astronomical unit|AU (423.18 Gm) |
| |{{{apsis}}}|helion}} | 1.7653 AU (264.09 Gm) |
| 2.2970 AU (343.63 Gm) | |
| Eccentricity | 0.23150 |
| Orbital period | 3.48 yr (1271.6 d) |
| Mean anomaly | 51.9052° |
| Mean motion | 0° 16m 59.196s / day |
| Inclination | 18.125° |
| Longitude of ascending node | 278.460° |
| 214.008° | |
| Physical characteristics | |
| Mean radius | 63.70±1.95 km[1] 63.915 ± 2.615 km[2] |
| Mass | (1.35 ± 0.14) × 1018 kg[2] |
| Mean density | 1.23 ± 0.19 g/cm3[2] |
| Rotation period | 31.735 h (1.3223 d) |
| Geometric albedo | 0.0425±0.003 |
| Absolute magnitude (H) | 8.52 |
654 Zelinda is a minor planet orbiting the Sun that was discovered on 4 January 1908 by German astronomer August Kopff. On favorable oppositions, it can be as bright as magnitude 10.0, as on January 30, 2016.
In 1988, this object was detected with radar from the Arecibo Observatory at a distance of 0.89 AU. The measured radar cross-section was 2,200 km2.[3] Measurements made using the adaptive optics system at the W. M. Keck Observatory give a diameter estimate of 131 km. This is 13% smaller than the diameter estimated from the IRAS observatory measurements. It is roughly triangular in shape.[4]
References
- ↑ 1.0 1.1 "654 Zelinda (1908 BM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=654;cad=1.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ Ostro, S. J. et al. (October 1991), "Asteroid radar astrometry", Astronomical Journal 102: pp. 1490–1502, doi:10.1086/115975, Bibcode: 1991AJ....102.1490O.
- ↑ Marchis, F. et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus 185 (1): pp. 39–63, doi:10.1016/j.icarus.2006.06.001, PMID 19081813, PMC 2600456, Bibcode: 2006Icar..185...39M, http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006Icar..185...39M&link_type=EJOURNAL&db_key=AST&high=, retrieved 2013-03-27.
External links
- Lightcurve plot of 654 Zelinda, Palmer Divide Observatory, B. D. Warner (2007)
- 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
- 654 Zelinda at AstDyS-2, Asteroids—Dynamic Site
- 654 Zelinda at the JPL Small-Body Database
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