302 Clarissa
{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=June 2017}}
{{Infobox planet
| minorplanet = yes
| background = #D6D6D6
| name = 302 Clarissa
| image = 302Clarissa (Lightcurve Inversion).png
| image_scale =
| 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
{{mp|1929 CK|1}}; 1946 UN
1948 ED; 1953 NN
| mp_category = Main belt
| epoch = 31 July 2016 (JD 2457600.5)
| semimajor = {{Convert|2.40528|AU|Gm|2|adj=ri2|abbr=on}}
| perihelion = {{Convert|2.13648|AU|Gm|2|adj=ri2|abbr=on}}
| aphelion = {{Convert|2.67407|AU|Gm|2|adj=ri2|abbr=on|lk=on}}
| eccentricity = 0.11175
| period = {{convert|1362.5|days|years|2|order=flip|abbr=on}}
| inclination = 3.41369°
| asc_node = 7.85637°
| arg_peri = 54.5926°
| mean_anomaly = 213.798°
| dimensions = {{val|38.53|3.1|ul=km}}
| mass =
| density = {{val|1.5|u=g cm−3}}
| rotation = {{Convert|14.381|h|d|abbr=on|lk=on}}
| spectral_type = F
| abs_magnitude = 10.89
| albedo = {{val|0.0524|0.010}}
| single_temperature =
| mean_motion = {{Deg2DMS|0.264215|sup=ms}} / day
| observation_arc = {{convert|45305|days|years|2|order=flip|abbr=on}} 124.04 yr (45305 d)
| uncertainty = 0
}}
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 {{convert|1362.5|days|years|2|disp=out|abbr=off}} 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 {{val|43|4|u=km}}, while IRAS data gives a diameter of {{val|38.5|3.1|u=km}}. 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 {{val|56|5}} 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,[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 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
{{reflist|refs=
| title=302 Clarissa
| work=JPL Small-Body Database
| publisher=NASA/Jet Propulsion Laboratory
| url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=302;cad=1
| access-date=11 May 2016 }}
| title=Dictionary of Minor Planet Names
| first=Lutz D. | last=Schmadel | date=November 11, 2013
| page=61 | isbn=9783662066157
| publisher=Springer | publication-place=Berlin Heidelberg
| url=https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA61 }}
| title=Observations of the asteroid 302 Clarissa by fast multichannel photometer
| last1=Chevreton | first1=M. | last2=Herpe | first2=G.
| last3=Barucci | first3=M. A. | last4=Fulchignoni | first4=M.
| display-authors=1 | journal=Planetary and Space Science
| volume=41 | issue=8 | pages=563–567 | date=August 1993
| bibcode=1993P&SS...41..563C | doi=10.1016/0032-0633(93)90076-E }}
| title=Clarissa Family Age from the Yarkovsky Effect Chronology
| last1=Lowry | first1=Vanessa C. | last2=Vokrouhlický | first2=David
| last3=Nesvorný | first3=David | last4=Campins | first4=Humberto
| display-authors=1 | journal=The Astronomical Journal
| volume=160 | issue=3 | id=127 | date=September 2020
| page=127 | arxiv=2009.06030 | bibcode=2020AJ....160..127L
| doi=10.3847/1538-3881/aba4af | doi-access=free }}
| title=Visible spectroscopy of the Sulamitis and Clarissa primitive families: a possible link to Erigone and Polana
| display-authors=1 | last1=Morate | first1=David
| last2=de León | first2=Julia | last3=De Prá | first3=Mário
| last4=Licandro | first4=Javier | last5=Cabrera-Lavers | first5=Antonio
| last6=Campins | first6=Humberto | last7=Pinilla-Alonso | first7=Noemí
| journal=Astronomy & Astrophysics
| volume=610 | id=A25 | pages=14 | date=February 2018
| bibcode=2018A&A...610A..25M | doi=10.1051/0004-6361/201731407 | doi-access=free }}
}}
External links
- {{AstDys|302}}
- {{JPL small body}}
{{Minor planets navigator |301 Bavaria |number=302 |303 Josephina}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Clarissa}}