| 词条 | 2014 MT69 |
| 释义 |
| minorplanet = yes | background = #C2E0FF | name = {{mp|2014 MT|69}} | symbol = | image = 2014 MT69.png | image_size = 240 | caption = Discovery image sequence | discovery_ref = [1] | discoverer = Hubble Space Telescope | discovered = June 24, 2014 | mpc_name = 2014 MT69 | mp_category = Trans-Neptunian object (TNO) | alt_names = 0720090F,[2] 7[3][4] | orbit_ref = [2] | epoch = 21 July 2014 (JD 2456859.5) | uncertainty = 9 | observation_arc = 40 days | semimajor = {{Convert|44.980|±|1035.5|AU|Tm|abbr=on}} | perihelion = {{Convert|40.719|±|2125.7|AU|Tm|abbr=on}} | aphelion = {{Convert|49.242|±|1133.6|AU|Tm|abbr=on|lk=on}} | inclination = {{val|3.1589|12.912|u=°}} | period = {{val|301.68|10420}} yr | avg_speed = 4.5? km/s | eccentricity = {{val|0.094737|68.05}} | asc_node = {{val|141.98|207.67|u=°}} | arg_peri = {{val|206.66|8735.5|u=°}} | mean_anomaly = {{val|301.50|1613}}° | magnitude = 27.4[4] | albedo = 0.04–0.15[4] | abs_magnitude = {{val|11.483|0.63034}}[2] | dimensions = {{convert|27|–|92|km|miles|abbr=on}}[3] | mean_motion = {{Deg2DMS|0.0032672|sup=ms}} ± {{Deg2DMS|0.11282|sup=ms}} / day | moid = {{Convert|39.7121|AU|Tm|abbr=on}} | jupiter_moid = {{Convert|35.7377|AU|Tm|abbr=on}} | tisserand = 5.961 }}{{mp|2014 MT|69}} (internally designated {{mp|0720090F}} in the context of the Hubble Space Telescope, and 7 in the context of the New Horizons mission) is a Kuiper belt object (KBO) and was formerly a potential flyby target for the New Horizons probe.[4] Discovery and naming{{mp|2014 MT|69}} was discovered with the help of the Hubble Space Telescope (HST)[5] because the object has a magnitude of 27.3, which is too faint to be observed by ground-based telescopes. Preliminary observations by the HST searching for KBO flyby targets for the New Horizons probe started in June 2014, and more intensive observations continued in July and August.[6][7] {{mp|2014 MT|69}} was first discovered in observations on June 24, 2014 during the preliminary observations, but it was designated 0720090F at the time,[8] nicknamed "7" for short.[4][4] Its existence as a potential target of the New Horizons probe was revealed by NASA in October 2014,[4] but the official name {{mp|2014 MT|69}} was not assigned by the Minor Planet Center (MPC) until March 2015 after better orbit information was available.[4] The parameters of the orbit have the extremely large uncertainty of 9 because follow-up observations after discovery eliminated {{mp|2014 MT|69}} as a potential target of the New Horizons probe, and no further follow-up observations were made.[4]Potential targets of the New Horizons missionAfter having completed its flyby of Pluto, the New Horizons space probe was maneuvered for a flyby of at least one Kuiper belt object (KBO). Several targets were considered for the first such flyby. Potential target {{mp|2014 MT|69}} has a diameter between {{Convert|27|-|92|km|abbr=on}}, which is smaller than the other potential targets of the New Horizons probe. A potential encounter initially looked more feasible for {{mp|2014 MT|69}} than for {{mpl|2014 MU|69}}, but follow-up observations eventually ruled out {{mp|2014 MT|69}} as a potential target.[4][9] The potential targets for the New Horizons probe were PT1 and PT3, the KBOs {{mp|2014 MU|69}} and {{mpl|2014 PN|70}}, and the probe has sufficient fuel to maneuver to either PT1 or PT3. Potential target PT2, the KBO {{mpl|2014 OS|393}}, is no longer under consideration as a potential target.[10] On 28 August 2015, the New Horizons team announced the selection of {{mp|2014 MU|69}} as the next flyby target.[11] See also
References1. ^{{cite web|title=2014 MT69|url=http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=2014+MT69|publisher=Minor Planet Center|date=2014-08-03}} 2. ^1 {{cite web |type=2014-08-03 last obs; arc: 40 days |title=JPL Small-Body Database Browser: (2014 MT69) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014MT69 |accessdate=6 May 2016}} 3. ^{{cite web|title=ABSOLUTE MAGNITUDE (H) |url=http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html |deadurl=yes |archiveurl=https://web.archive.org/web/20110723191750/http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html |archivedate=2011-07-23 |df= }} 4. ^1 2 3 4 {{cite web|author=Zangari, Amanda|title=Postcards from Pluto|url=http://plutopostcards.tumblr.com/post/114890975293/picture-from-the-colorado-dmv-im-super-excited|publisher=Tumblr|date=March 28, 2015}} 5. ^{{cite journal|author=J. R. Spencer|author2=M. W. Buie|title=The Successful Search for a Post-Pluto KBO Flyby Target for New Horizons Using the Hubble Space Telescope|url=http://meetingorganizer.copernicus.org/EPSC2015/EPSC2015-417.pdf|work=European Planetary Science Congress (EPSC) Abstract|publisher=Copernicus Office|date=2015|display-authors=etal}} 6. ^{{cite web|title=Hubble to Proceed with Full Search for New Horizons Targets|work= HubbleSite news release|publisher=Space Telescope Science Institute|date=July 1, 2014|url=http://hubblesite.org/newscenter/archive/releases/2014/35/}} 7. ^{{cite web |url= http://spacefellowship.com/news/art39548/hubble-to-proceed-with-full-search-for-new-horizons-targets.html |title=Hubble to Proceed with Full Search for New Horizons Targets|first=Klaus|last=Schmidt|work=International Space Fellowship|date=2 July 2014}} 8. ^1 {{cite web|title=Hubble Survey Finds Two Kuiper Belt Objects to Support New Horizons Mission|url=http://hubblesite.org/newscenter/archive/releases/2014/35/image/a/|work=HubbleSite news release|publisher=Space Telescope Science Institute|date=July 1, 2014}} 9. ^1 2 3 4 5 6 {{cite web|author=Buie, Marc|authorlink=Marc W. Buie|title=New Horizons HST KBO Search Results: Status Report|url=http://www.stsci.edu/institute/stuc/oct-2014/New-Horizons.pdf|publisher=Space Telescope Science Institute|date=October 15, 2014|page=23}} 10. ^{{cite web|author=Powell, Corey S.|title=Alan Stern on Pluto’s Wonders, New Horizons’ Lost Twin, and That Whole "Dwarf Planet" Thing|url=http://blogs.discovermagazine.com/outthere/2015/03/29/alan-stern-on-plutos-wonders/|magazine=Discover|date=March 29, 2015}} 11. ^{{cite web|last1=Cofield|first1=Calla|title=Beyond Pluto: 2nd Target Chosen for New Horizons Probe|url=http://www.space.com/30415-new-horizons-pluto-mission-next-target.html|website=Space.com|date=28 August 2015}} External links
5 : Kuiper belt objects|Minor planet object articles (unnumbered)|Discoveries using the Hubble Space Telescope|New Horizons|Astronomical objects discovered in 2014 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。