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302 Clarissa

Main-belt asteroid

Field	Value
minorplanet	yes
background	#D6D6D6
name	302 Clarissa
image	302Clarissa (Lightcurve Inversion).png
caption	A three-dimensional model of 302 Clarissa based on its light curve
discoverer	Auguste Charlois
discovered	14 November 1890
mpc_name	(302) Clarissa
alt_names	A890 VA; 1909 YA
; 1946 UN
1948 ED; 1953 NN
mp_category	Main belt
epoch	31 July 2016 (JD 2457600.5)
semimajor	2.40528 AU
perihelion	2.13648 AU
aphelion	2.67407 AU
eccentricity	0.11175
period	1362.5 days
inclination	3.41369°
asc_node	7.85637°
arg_peri	54.5926°
mean_anomaly	213.798°
dimensions
density
rotation	14.381 h
spectral_type	F
abs_magnitude	10.89
albedo
mean_motion	/ day
orbit_ref
observation_arc	45305 days 124.04 yr (45305 d)
uncertainty	0

; 1946 UN 1948 ED; 1953 NN

302 Clarissa is a typical main belt asteroid. The asteroid was discovered by the French astronomer Auguste Charlois on 14 November 1890 in Nice. The origin of the name is unknown. In 1991, 302 Clarissa was being considered as a possible fly-by target for the Cassini spacecraft, but was later removed from consideration.

This body is orbiting the Sun with a period of 1362.5 days and an eccentricity (ovalness) of 0.11. The orbital plane is inclined by 3.4° to the plane of the ecliptic. There are no major planetary resonances near the orbit of 302 Clarissa. It has a retrograde spin with a rotation period of 14.4797 hours. Stellar occultation data provides a size estimate of , while IRAS data gives a diameter of . It is classified as a F-type asteroid and is probably composed of carbonaceous material.

302 Clarissa provides the eponym for a small collisional asteroid family of mostly C-type asteroids. This group consists of 179 bodies with orbits clustered around 302 Clarissa. The family has a small extend of semimajor axis values, suggesting this is a young group; its estimated age is Myr. 70–90% of the objects in this family have a retrograde spin, suggesting the parent body may have possessed a similar rotation. This family is one of five that are candidate sources for the near Earth asteroids 101955 Bennu and 162173 Ryugu.

Spacecraft visits

At present, Clarissa has not been visited by any spacecraft. As of 1991, mission planning for the Cassini–Huygens spacecraft included a flyby (spaceflight) of Clarissa while leaving the inner solar system in November 1998, however due to delays, the launch of Cassini-Huygens was moved from November 1995 to October 1997, thus negating the option to pass near Clarissa. Cassini-Huygens passed by asteroid 2685 Masursky on 23 January 2000 instead.

References

| access-date=11 May 2016 }}

| display-authors=1 | journal=Planetary and Space Science

| display-authors=1 | journal=The Astronomical Journal

| display-authors=1 | last1=Morate | first1=David

References

[https://books.google.com/books?id=cPiNsrGCMcsC Outward to the Beginning: the CRAF and Cassini Missions of the Mariner Mark 2 Program]; NASA Contractor Report CR-183133, 1 June 1988

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

f-type-asteroids-(tholen) clarissa-asteroids discoveries-by-auguste-charlois named-minor-planets astronomical-objects-discovered-in-1890

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