171 Ophelia

171 Ophelia
Discovery
Discovered by	A. Borrelly
Discovery date	13 January 1877
Designations
MPC designation	(171) Ophelia
Pronunciation	/oʊˈfiːliə/
Minor planet category	Main belt (Themis)
Adjectives	Ophelian /ɒˈfiːliən/
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	122.15 yr (44615 d)
Aphelion	3.5476 AU (530.71 Gm)
Perihelion	2.7175 AU (406.53 Gm)
Semi-major axis	3.1326 AU (468.63 Gm)
Eccentricity	0.13249
Orbital period (sidereal)	5.54 yr (2025.1 d)
Mean anomaly	11.164°
Mean motion	0° 10m 39.972s / day
Inclination	2.5461°
Longitude of ascending node	100.52°
Argument of perihelion	56.849°
Physical characteristics
Mean radius	58.345±1.8 km
Synodic rotation period	6.66535 h (0.277723 d)
Geometric albedo	0.0615±0.004
Spectral type	C
Absolute magnitude (H)	8.31

Ophelia (minor planet designation: 171 Ophelia) is a large, dark Themistian asteroid^[4] that was discovered by French astronomer Alphonse Borrelly on 13 January 1877, and named after Ophelia in Shakespeare's Hamlet.^[5]

This asteroid is a member of the Themis family of asteroids that share similar orbital elements.^[6] It probably has a primitive composition, similar to that of the carbonaceous chondrite meteorites.

A 1979 study of the Algol-like light curve produced by this asteroid concluded that it was possible to model the brightness variation by assuming a binary system with a circular orbit, a period of 13.146 hours, and an inclination of 15° to the line of sight from the Earth.^[7] Photometric observations of this asteroid at the Leura Observatory in Leura, Australia during 2006 gave a rotation period of 6.6666 ± 0.0002 hours and a brightness variation of 0.50 ± 0.02 in magnitude. This is in agreement with previous studies.^[8]

Ophelia is also the name of a moon of Uranus.

References[]

^ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
^ "Ophelian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
^ Yeomans, Donald K., "171 Ophelia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.
^ Florczak, M.; et al. (February 1999). "A spectroscopic study of the THEMIS family". Astronomy and Astrophysics Supplement. 134: 463–471. Bibcode:1999A&AS..134..463F. doi:10.1051/aas:1999150.
^ Schmadel, Lutz (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 30. ISBN 9783540002383. Retrieved 17 July 2019.
^ Moore, Patrick; Rees, Robin, eds. (2011), Patrick Moore's Data Book of Astronomy (2nd ed.), Cambridge University Press, p. 165, ISBN 9781139495226.
^ Wijesinghe, M. P.; Tedesco, E. F. (December 1979), "A test of plausibility of eclipsing binary asteroids", Icarus, 40 (3): 383–393, Bibcode:1979Icar...40..383W, doi:10.1016/0019-1035(79)90031-9.
^ Oey, Julian (December 2006), "Lightcurves analysis of 10 asteroids from Leura Observatory", The Minor Planet Bulletin, 33 (4): 96–99, Bibcode:2006MPBu...33...96O.

External links[]

171 Ophelia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
171 Ophelia at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by .

[1] Benjamin Smith (1903) The Century Dictionary and Cyclopedia

[2] "Ophelian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)

[JPL-3] Yeomans, Donald K., "171 Ophelia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.

[Florczak_et_al_1999-4] Florczak, M.; et al. (February 1999). "A spectroscopic study of the THEMIS family". Astronomy and Astrophysics Supplement. 134: 463–471. Bibcode:1999A&AS..134..463F. doi:10.1051/aas:1999150.

[5] Schmadel, Lutz (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 30. ISBN 9783540002383. Retrieved 17 July 2019.

[Moore2011-6] Moore, Patrick; Rees, Robin, eds. (2011), Patrick Moore's Data Book of Astronomy (2nd ed.), Cambridge University Press, p. 165, ISBN 9781139495226.

[Wijesinghe1979-7] Wijesinghe, M. P.; Tedesco, E. F. (December 1979), "A test of plausibility of eclipsing binary asteroids", Icarus, 40 (3): 383–393, Bibcode:1979Icar...40..383W, doi:10.1016/0019-1035(79)90031-9.

[Oey2006-8] Oey, Julian (December 2006), "Lightcurves analysis of 10 asteroids from Leura Observatory", The Minor Planet Bulletin, 33 (4): 96–99, Bibcode:2006MPBu...33...96O.

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