211 Isolda

211 Isolda
	Orbital diagram
Discovery
Discovered by	Johann Palisa
Discovery date	10 December 1879
Designations
MPC designation	(211) Isolda
Pronunciation	/ɪˈzoʊldə/
Named after	Iseult
Alternative designations	A879 XA, 1912 AB; 1912 BA, 1950 FM
Minor planet category	Main belt
Adjectives	Isoldian /ɪˈzoʊldiən/
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	136.19 yr (49742 d)
\|{{{apsis}}}\|helion}}	3.53270 astronomical unit\|AU (528.484 Gm)
\|{{{apsis}}}\|helion}}	2.5514 AU (381.68 Gm)
Semi-major axis	3.04205 AU (455.084 Gm)
Eccentricity	0.16129
Orbital period	5.31 yr (1938.0 d)
Average Orbital speed	17.08 km/s
Mean anomaly	260.142°
Mean motion	0° 11m 8.74s / day
Inclination	3.8856°
Longitude of ascending node	263.644°
\|{{{apsis}}}\|helion}}	173.522°
Physical characteristics
Dimensions	143.19±5.1 km; 149.81 ± 6.10 km
Mass	(4.49 ± 2.43) × 1018 kg
Mean density	2.54 ± 1.41 g/cm3
Rotation period	18.365 h (0.7652 d)
Geometric albedo	0.0602±0.004; 0.0598 ± 0.0218
Spectral type	C (Tholen)
Absolute magnitude (H)	7.89, 7.90

Short description: Main-belt asteroid

Isolda (minor planet designation: 211 Isolda) is a very large, dark main-belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material. The spectra of the asteroid displays evidence of aqueous alteration.^[6]

It was discovered by Austrian astronomer Johann Palisa on 10 December 1879, in Pola, and is possibly named after Isolde, heroine of the legend of Tristan and Iseult.^[7]

In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.78 AU. The resulting data yielded an effective diameter of 143 ± 16 km.^[8]

Between 2009 and 2022, 211 Isolda has been observed to occult seven stars.^{[citation needed]}

References

↑ "Isolde". Isolde. Oxford University Press. http://www.lexico.com/definition/Isolde.
↑ Irene Masing-Delic (1992) Abolishing Death: A Salvation Myth of Russian Twentieth-Century Literature, p. 163
↑ ^3.0 ^3.1 ^3.2 ^3.3 "211 Isolda". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=211;cad=1.
↑ ^4.0 ^4.1 ^4.2 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.
↑ ^5.0 ^5.1 ^5.2 Pravec, P. et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan 1667 (1667): pp. 6089, Bibcode: 2012LPICo1667.6089P. See Table 4.
↑ 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.
↑ Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.
↑ Magri, Christopher et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003", Icarus 186 (1): 126–151, doi:10.1016/j.icarus.2006.08.018, Bibcode: 2007Icar..186..126M, http://echo.jpl.nasa.gov/asteroids/MBAs/magri.etal.2007.mbas.pdf, retrieved 2015-04-14.

External links

The Asteroid Orbital Elements Database
Minor Planet Discovery Circumstances
Asteroid Lightcurve Data File
211 Isolda at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
211 Isolda at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] "Isolde". Isolde. Oxford University Press. http://www.lexico.com/definition/Isolde.

[2] Irene Masing-Delic (1992) Abolishing Death: A Salvation Myth of Russian Twentieth-Century Literature, p. 163

[jpldata-3] 3.0 ^3.1 ^3.2 ^3.3 "211 Isolda". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=211;cad=1.

[Carry2012-4] 4.0 ^4.1 ^4.2 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.

[Pravec2012-5] 5.0 ^5.1 ^5.2 Pravec, P. et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan 1667 (1667): pp. 6089, Bibcode: 2012LPICo1667.6089P. See Table 4.

[Fornasier1999-6] 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.

[7] Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.

[icarus186_1_126-8] Magri, Christopher et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003", Icarus 186 (1): 126–151, doi:10.1016/j.icarus.2006.08.018, Bibcode: 2007Icar..186..126M, http://echo.jpl.nasa.gov/asteroids/MBAs/magri.etal.2007.mbas.pdf, retrieved 2015-04-14.