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Updated orbit information and added sources for size. Added mention of Mike Brown giving it "possible" dwarf planet status.
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| alt_names=
| alt_names=
| mp_category=[[Trans-Neptunian object]]<br>([[cubewano]])
| mp_category=[[Trans-Neptunian object]]<br>([[cubewano]])
| epoch=December 9, 2014[[Julian day|JD]] 2457000.5<ref name=jpl>{{cite web|title=JPL Small-Body Database Browser|publisher=Jet Propulsion Laboratory|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=181708|accessdate=2015-01-03}}</ref>
| epoch=[[Julian day|JD]] 2455800.5
| semimajor=43.843 AU

| semimajor=43.559 AU
| perihelion=41.644 AU
⚫
| aphelion=46.041 [[Astronomical unit|AU]]
| perihelion=41.607 AU
⚫
| eccentricity=0.050
⚫
| aphelion=45.511 [[Astronomical unit|AU]]
| period=290.30 [[julian year (astronomy)|a]]
⚫
| eccentricity=0.045
| period=287 [[julian year (astronomy)|a]]
| inclination=7.741[[degree (angle)|°]]
| asc_node=187.866°
| inclination=7.8[[degree (angle)|°]]
| asc_node=188°
| arg_peri=39.963°
| arg_peri=44.7°
| mean_anomaly=350.066°
⚫
| avg_speed= 4.489 km/s
| mean_anomaly=341.4°
| dimensions=175 km<ref name=johnston>{{cite web|title=List of Known Trans-Neptunian Objects|publisher=Wm. Robert Johnston|url=http://www.johnstonsarchive.net/index.html|accessdate=2015-01-03}}</ref>
⚫
| avg_speed=
241 km<ref name=brown>{{cite web|title=How many dwarf planets are there in the outer solar system?|publisher=Mike Brown|url=http://web.gps.caltech.edu/~mbrown/dps.html|accessdate=2015-01-03}}</ref>
| dimensions=175 km
| mass=
| mass=
| density=
| density=
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| single_temperature=
| single_temperature=
}}
}}
'''(181708) 1993 FW''' was the second [[trans-Neptunian object]] to be discovered after [[Pluto]] and [[Charon (moon)|Charon]]. It was discovered in 1993 by [[David C. Jewitt]] and [[Jane X. Luu]] at the [[Mauna Kea Observatory]], [[Hawaii]].<ref>{{cite journal|title=1993 FW|author=BS Marsden|publisher=Minor Planet Center|bibcode=1993IAUC.5730....1L|year=1993|author2=Jewitt, D.|author3=Marsden, B. G.|volume=5730|page=1|journal=IAU Circ.}}</ref>
'''(181708) 1993 FW''' was the second [[trans-Neptunian object]] to be discovered after [[Pluto]] and [[Charon (moon)|Charon]]. It was discovered in 1993 by [[David C. Jewitt]] and [[Jane X. Luu]] at the [[Mauna Kea Observatory]], [[Hawaii]].<ref>{{cite journal|title=1993 FW|author=BS Marsden|publisher=Minor Planet Center|bibcode=1993IAUC.5730....1L|year=1993|author2=Jewitt, D.|author3=Marsden, B. G.|volume=5730|page=1|journal=IAU Circ.}}</ref> [[Michael E. Brown|Mike Brown]] lists it as possibly a dwarf planet on his website.<ref name=brown/>


== References ==
== References ==

Revision as of 05:22, 4 January 2015

(181708) 1993 FW
Discovery
Discovered byDavid C. Jewitt,
Jane X. Luu
Discovery date28 March 1993
Designations
Trans-Neptunian object
(cubewano)
Orbital characteristics
Epoch December 9, 2014JD 2457000.5[1]
Aphelion46.041 AU
Perihelion41.644 AU
43.843 AU
Eccentricity0.050
290.30 a
4.489 km/s
350.066°
Inclination7.741°
187.866°
39.963°
Physical characteristics
Dimensions175 km[2] 241 km[3]
7

(181708) 1993 FW was the second trans-Neptunian object to be discovered after Pluto and Charon. It was discovered in 1993 by David C. Jewitt and Jane X. Luu at the Mauna Kea Observatory, Hawaii.[4] Mike Brown lists it as possibly a dwarf planet on his website.[3]

References

  1. ^ "JPL Small-Body Database Browser". Jet Propulsion Laboratory. Retrieved 2015-01-03.
  2. ^ "List of Known Trans-Neptunian Objects". Wm. Robert Johnston. Retrieved 2015-01-03.
  3. ^ a b "How many dwarf planets are there in the outer solar system?". Mike Brown. Retrieved 2015-01-03.
  4. ^ BS Marsden; Jewitt, D.; Marsden, B. G. (1993). "1993 FW". IAU Circ. 5730. Minor Planet Center: 1. Bibcode:1993IAUC.5730....1L.
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