Astronomy:202 Chryseïs

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Short description: Main-belt asteroid
202 Chryseïs
Орбита астероида 202.png
Orbital diagram
Discovery
Discovered byC. H. F. Peters
Discovery date11 September 1879
Designations
(202) Chryseïs
Pronunciation/krˈsɪs/[1]
Named afterChryseis
A879 RA, A901 TA
1935 BL
Minor planet categoryMain belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc136.57 yr (49881 d)
|{{{apsis}}}|helion}}3.3859 astronomical unit|AU (506.52 Gm)
|{{{apsis}}}|helion}}2.7567 AU (412.40 Gm)
3.0713 AU (459.46 Gm)
Eccentricity0.10244
Orbital period5.38 yr (1966.0 d)
Average Orbital speed16.99 km/s
Mean anomaly11.1527°
Mean motion0° 10m 59.196s / day
Inclination8.8535°
Longitude of ascending node136.848°
1.3159°
Physical characteristics
Dimensions86.15±2.4 km
Rotation period23.670 h (0.9863 d)[2]
23.670 ± 0.001 h[3]
Geometric albedo0.2562±0.015
S
Absolute magnitude (H)7.42


Chryseïs (minor planet designation: 202 Chryseïs) is a large, lightly coloured Main belt asteroid that is probably composed of silicate rocks. It was discovered by C. H. F. Peters on September 11, 1879, in Clinton, New York, and was named after the mythical Trojan woman Chryseis.

The rotation period for this asteroid is close to a day long, so the construction of a complete light curve requires photometric observations from multiple locations at widely spaced latitudes. This task was completed in January and February, 2011, yielding a synodic rotation period of 23.670 ± 0.001 h, with a brightness variation of 0.20 ± 0.02 in magnitude[3]

References

  1. Noah Webster (1884) A Practical Dictionary of the English Language
  2. 2.0 2.1 "202 Chryseis". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=202;cad=1. 
  3. 3.0 3.1 Stephens, Robert D. et al. (October 2011), "The Lightcurve for 202 Chryseis", The Minor Planet Bulletin 38 (4): 208–209, Bibcode2011MPBu...38..208S. 

External links