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211 Isolda

From Wikipedia, the free encyclopedia
Main-belt asteroid

211 Isolda
Orbital diagram
Discovery
Discovered byJohann Palisa
Discovery date10 December 1879
Designations
(211) Isolda
Pronunciation/ɪˈzoʊldə/[1]
Named after
Iseult
A879 XA, 1912 AB
1912 BA, 1950 FM
Main belt
AdjectivesIsoldian/ɪˈzoʊldiən/[2]
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc136.19 yr (49742 d)
Aphelion3.53270 AU (528.484 Gm)
Perihelion2.5514 AU (381.68 Gm)
3.04205 AU (455.084 Gm)
Eccentricity0.16129
5.31yr (1938.0d)
17.08 km/s
260.142°
0° 11m 8.74s / day
Inclination3.8856°
263.644°
173.522°
Physical characteristics
Dimensions143.19±5.1 km[3]
149.81 ± 6.10 km[4]
Mass(4.49 ± 2.43) × 1018 kg[4]
2.54 ± 1.41 g/cm3[4]
18.365 h (0.7652 d)
0.0602±0.004[3]
0.0598 ± 0.0218[5]
C[5] (Tholen)
7.89,[3] 7.90[5]

211 Isolda is a very large, darkmain-beltasteroid. It is classified as aC-type asteroid and is probably composed of primitivecarbonaceous material. The spectra of the asteroid displays evidence of aqueous alteration.[6]

It was discovered by Austrian astronomerJohann Palisa on 10 December 1879, inPola, and is possibly named afterIsolde, heroine of the legend ofTristan and Iseult.[7]

In 2001, the asteroid was detected by radar from theArecibo Observatory at a distance of 1.78 AU. The resulting data yielded an effective diameter of143 ± 16 km.[8]

Between 2009 and 2022, 211 Isolda has been observed tooccult seven stars.[citation needed]

References

[edit]
  1. ^"Isolde".Lexico UK English Dictionary.Oxford University Press. Archived fromthe original on 1 March 2020.
  2. ^Irene Masing-Delic (1992)Abolishing Death: A Salvation Myth of Russian Twentieth-Century Literature, p. 163
  3. ^abcd"211 Isolda".JPL Small-Body Database.NASA/Jet Propulsion Laboratory. Retrieved12 May 2016.
  4. ^abcCarry, B. (December 2012), "Density of asteroids",Planetary and Space Science,73 (1):98–118,arXiv:1203.4336,Bibcode:2012P&SS...73...98C,doi:10.1016/j.pss.2012.03.009. See Table 1.
  5. ^abcPravec, 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, vol. 1667, no. 1667, p. 6089,Bibcode:2012LPICo1667.6089P. See Table 4.
  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,Bibcode:1999A&AS..135...65F,doi:10.1051/aas:1999161.
  7. ^Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.
  8. ^Magri, Christopher; et al. (January 2007),"A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003"(PDF),Icarus,186 (1):126–151,Bibcode:2007Icar..186..126M,doi:10.1016/j.icarus.2006.08.018, retrieved14 April 2015.

External links

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