| 词条 | 6144 Kondojiro |
| 释义 |
| minorplanet = yes | background = #D6D6D6 | name = 6144 Kondojiro | image = | caption = | discovery_ref = | discoverer = K. Endate, K. Watanabe | discovery_site = Kitami | discovered = 14 March 1994 | mpc_name = (6144) Kondojiro | alt_names = {{mp|1994 EQ|3}}, {{mp|1937 JF}}, {{mp|1937 JQ}}, {{mp|1984 FW|1}} | named_after = Jiro Kondo | mp_category = Jupiter-crosser asteroid | orbit_ref = | epoch = 13 January 2016 (JD 2457400.5) | uncertainty = 0 | observation_arc = 22150 days (60.64 yr) | aphelion = {{Convert|6.47345|AU|Gm|abbr=on|lk=on}} (Q) | perihelion = {{Convert|3.03222|AU|Gm|abbr=on}} (q) | semimajor = {{Convert|4.75283|AU|Gm|abbr=on}} (a) | eccentricity = 0.36202 (e) | period = 10.36 yr (3784.66 d) | inclination = 5.88716° (i) | asc_node = 117.14167° (Ω) | mean_anomaly = 34.71927° (M) | arg_peri = 96.127254° (ω) | moid = {{Convert|2.03358|AU|Gm|abbr=on}} | jupiter_moid = {{Convert|0.204605|AU|Gm|abbr=on}} | rotation = {{val|4.0|2}} h[3] | satellites = | dimensions = {{val|32.9|5.1|u=km}}[1] | albedo = {{val|0.044|0.009}}[1] | spectral_type = D[2] | abs_magnitude = 11.6 | mean_motion = {{Deg2DMS|0.0951208|sup=ms}} / day (n) | tisserand = 2.867 }} 6144 Kondojiro ({{mp|1994 EQ|3}}) is an asteroid discovered on March 14, 1994 by Kin Endate and Kazuro Watanabe at the Kitami Observatory in eastern Hokkaidō, Japan. It is named after Jiro Kondo, a Japanese Egyptologist and professor of archaeology at Waseda University. Orbit and classificationThe orbit of 6144 Kondojiro is unusual for a number of reasons, including:
It is difficult to classify an object with such a peculiar orbit using a conventional definition. Despite this, the Minor Planet Center (MPC) lists it as a main-belt asteroid,[7] even though both the orbital and physical properties of 6144 Kondojiro suggest that it may be an extinct comet rather than a true asteroid.[2] The JPL Small-Body Database lists only 33 such objects that have an observation arc greater than 30 days.[9] See also
References1. ^1 J. Licandro, 2015, [https://arxiv.org/abs/1510.02282 "Size and albedo distributions of asteroids in cometary orbits using WISE data"] [3][4][5]2. ^1 M. Ishiguro, 2014, [https://arxiv.org/abs/1405.2989 "Physical Properties of Asteroids in Comet-like Orbits in Infrared Asteroid Survey Catalogs"] 3. ^1 {{cite web |title=Asteroids and comets rotation curves – (6144) Kondojiro |last=Behrend |first=Raoul |publisher=Geneva Observatory |url=http://obswww.unige.ch/~behrend/page5cou.html#006144 |accessdate=6 January 2016}} 4. ^1 {{cite web | title = IAU Minor Planet Center - (6144) Kondojiro | publisher = Minor Planet Center | url = http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=6144 | accessdate = 19 November 2015}} 5. ^1 {{cite web |title = JPL Small-Body Database Search Engine: orbital class (AST) and data-arc span > 30 (d) |url = http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;ast_orbit_class=AST;OBJ_field=0;ORB_field=0;c1_group=ORB;c1_item=Ck;c1_op=%3E;c1_value=30;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsCkCqAi;.cgifields=format_option;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=com_orbit_class&query=1&c_sort=AcA |publisher = Jet Propulsion Laboratory Solar System Dynamics |accessdate = 2 March 2018}} }} External links
9 : Background asteroids|Extinct comets|Discoveries by Kin Endate|Discoveries by Kazuro Watanabe|Minor planets named for people|Named minor planets|Jupiter-crossing asteroids|D-type asteroids (Tholen)|Astronomical objects discovered in 1994 |
| 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。