{"id":66,"date":"2022-05-15T10:13:50","date_gmt":"2022-05-15T10:13:50","guid":{"rendered":"http:\/\/yanjingzhi.china-vo.org\/blog\/?p=66"},"modified":"2022-05-15T10:13:50","modified_gmt":"2022-05-15T10:13:50","slug":"summary-of-objects-within-10-parsecs","status":"publish","type":"post","link":"http:\/\/yanjingzhi.xyz\/blog\/?p=66","title":{"rendered":"Summary of Objects within 10 Parsecs"},"content":{"rendered":"\n

<\/p>\n\n\n\n

While astronomers know of no stars lying within one parsec of Sol, they find more stars within 10 parsecs every year — which is the mission of the Research Consortium on Nearby Stars (RECONS<\/a>). Including Sol<\/a> itself, over 414 celestial objects (including white and brown dwarfs) are currently believed to be located within 10 parsecs (pc) — (32.6 light-years (ly) — of Sol. While there are no bright blue stars of spectral “O” or “B” in the Solar neighborhood, most of the 74 nearby AFGK bright stars<\/a> have probably been found, although a few dim, late orange-red K-type dwarfs may yet be identified. On the other hand, although over 273 very dim but nearby red dwarf stars<\/a> (of spectral type “M”) have a measured distance of roughly 10 pc from Sol, many more probably remain to be found. Similarly, at least 48 substellar and extremely faint, nearby brown dwarfs<\/a>, have been found as of April 25, 2014. Some astronomers believe, however, that the current count of at least 21 nearby white dwarf stellar remnants<\/a> will not be significantly raised despite continuing observations.<\/p>\n\n\n\n

Nearby Celestial Objects by Type, Number, and Mass<\/strong><\/p>\n\n\n\n

Spectral or
Luminosity Type<\/strong><\/td>		Number
within 10
Parsecs<\/strong><\/td>		Sum of
Minimum
Solar-Masses<\/strong><\/td><\/tr>
O – Blue Stars<\/td>0<\/td>0.00<\/td><\/tr>
B – Blue White Stars<\/td>0<\/td>0.00<\/td><\/tr>
A – Bluish White Stars<\/a><\/td>4<\/td>8.7<\/td><\/tr>
F – Yellowish White Stars<\/a><\/td>8<\/td>8.9<\/td><\/tr>
G – Yellow-Orange Stars<\/a><\/td>20<\/td>18.5<\/td><\/tr>
K – Orange-Red Stars<\/a><\/td>42<\/td>29.9<\/td><\/tr>
M – Red Stars<\/a><\/td>273+<\/td>>38.4<\/td><\/tr>
M,L,T,Y – Brown Dwarfs<\/a><\/td>48+<\/td><2.5<\/td><\/tr>
D – White Dwarfs<\/a><\/td>21+<\/td>>11.8<\/td><\/tr>
Total Objects Known<\/strong><\/td>>413<\/strong><\/td>>121<\/strong><\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Minimum Solar-masses assumed for objects without mass estimates:
red stars (M=0.08); white dwarfs (D=0.5); and brown dwarfs (0.05).<\/small><\/p>\n\n\n\n

<\/p>\n\n\n\n

\"\"<\/figure>\n
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While astronomers know of no s […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-66","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=\/wp\/v2\/posts\/66","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=66"}],"version-history":[{"count":0,"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=\/wp\/v2\/posts\/66\/revisions"}],"wp:attachment":[{"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=66"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=66"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yanjingzhi.xyz\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=66"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}