654 Zelinda

654 Zelinda
Discovery
Discovered by	August Kopff
Discovery site	Heidelberg
Discovery date	4 January 1908
Designations
MPC designation	(654) Zelinda
Alternative designations	1908 BM
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	108.29 yr (39553 d)
Aphelion	2.8288 AU (423.18 Gm)
Perihelion	1.7653 AU (264.09 Gm)
Semi-major axis	2.2970 AU (343.63 Gm)
Eccentricity	0.23150
Orbital period (sidereal)	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°
Argument of perihelion	214.008°
Physical characteristics
Mean radius	63.70±1.95 km; 63.915 ± 2.615 km
Mass	(1.35 ± 0.14) × 1018 kg
Mean density	1.23 ± 0.19 g/cm3
Synodic 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

^ ^a ^b "654 Zelinda (1908 BM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 7 May 2016.
^ ^a ^b ^c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
^ Ostro, S. J.; et al. (October 1991), "Asteroid radar astrometry", Astronomical Journal, vol. 102, pp. 1490–1502, Bibcode:1991AJ....102.1490O, doi:10.1086/115975.
^ Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus, vol. 185, no. 1, pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813, retrieved 27 March 2013.

External links

Lightcurve plot of 654 Zelinda, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
654 Zelinda at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

[jpldata-1] "654 Zelinda (1908 BM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 7 May 2016.

[Carry2012-2] Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.

[Ostro1991-3] Ostro, S. J.; et al. (October 1991), "Asteroid radar astrometry", Astronomical Journal, vol. 102, pp. 1490–1502, Bibcode:1991AJ....102.1490O, doi:10.1086/115975.

[Marchis2006-4] Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus, vol. 185, no. 1, pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813, retrieved 27 March 2013.

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