{"id":11876,"date":"2017-06-30T23:18:01","date_gmt":"2017-07-01T06:18:01","guid":{"rendered":"http:\/\/www.hisark.com\/?p=11876"},"modified":"2021-11-28T00:01:46","modified_gmt":"2021-11-28T00:01:46","slug":"%eb%b3%84%eb%93%a4%ec%9d%98-%ea%b1%b0%eb%a6%ac-%ec%b8%a1%ec%a0%95-%ea%b2%80%ec%a6%9d-%ea%b0%80%eb%8a%a5%ed%95%9c%ea%b0%80","status":"publish","type":"post","link":"http:\/\/www.hisark.com\/?p=11876","title":{"rendered":"\ubcc4\ub4e4\uc758 \uac70\ub9ac \uce21\uc815\u2013\uac80\uc99d \uac00\ub2a5\ud55c\uac00? (\ubcc4\ub4e4\uc758 \uac70\ub9ac)"},"content":{"rendered":"

\uc2e4\uc81c\ub85c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uc5b4\ub5bb\uac8c \uacb0\uc815\ud560\uae4c? \ub610 \uacb0\uc815\ub41c \uac70\ub9ac\ub294 \uc5bc\ub9c8\ub098 \uc815\ud655\ud55c \uac83\uc77c\uae4c? \uadf8\ub9ac\uace0 \uac80\uc99d\uc740 \uac00\ub2a5\ud55c\uac00? \uc5ec\uae30\uc11c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uacb0\uc815\ud558\ub294 \ubc29\ubc95\uc744 \uc18c\uac1c\ud558\ub824\uace0 \ud55c\ub2e4. \ucc9c\ubb38\ud559\uc790\ub4e4\uc740 \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294\ub370 \uc2dc\ucc28(Parallax)\ubc29\ubc95\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uc2dc\ucc28\ub77c\ub294 \uac83\uc740 \uc18c\uc704 \uac89\ubcf4\uae30 \ubcc0\uc704(Shift)\ub97c \ub9d0\ud558\ub294\ub370 \ud55c \ubb3c\uccb4\ub97c \uad00\uce21\ud560 \ub54c \ub450\uac1c\uc758 \uc11c\ub85c \ub2e4\ub978 \uc870\uc900\uc120(Line of Sight)\uc774 \uad50\ucc28\ud558\uba74\uc11c \ubc30\ud6c4 \uba74\uc5d0 \ub9cc\ub4dc\ub294 \uac70\ub9ac\uc774\ub2e4.<\/p>\n

\"s01\"<\/p>\n

\uc9c0\uad6c\uac00 \ud0dc\uc591\uc758 \uada4\ub3c4\ub97c \uc120\ud68c\ud568\uc5d0 \ub530\ub77c\uc11c \uac00\uae4c\uc6b4 \uac70\ub9ac\uc758 \ubcc4\ub4e4\uc740 \ubcf4\ub2e4 \uba3c \ubcc4\ub4e4 \uc5d0 \ub300\ud558\uc5ec \uc0c1\ub300\uc801\uc73c\ub85c \uc704\uce58\uac00 \ub354 \ud06c\uac8c \ubcc0\ud558\ub294 \uac83\uc73c\ub85c \ubcf4\uc778\ub2e4. \uadf8\ub9bc\uacfc \uac19\uc774 1\uc6d4 \uc5d0 \ud558\ub098\uc758 \ubcc4\uc744 \uad00\uce21\ud558\uace0 6\uac1c\uc6d4 \ud6c4 7\uc6d4\uc5d0 \ub3d9\uc77c\ud55c \uadf8 \ubcc4\uc744 \uad00\uce21\ud558\uba74 \uc6d0\uac70\ub9ac \ubc30\uacbd \uc5d0 \uc788\ub294 \ubcc4\ub4e4\uc5d0 \ub300\ud558\uc5ec \uc704\uce58\uac00 \ubcc0\ud55c \uac83\uc744 \uc54c \uc218 \uc788\ub2e4. \uc774 \ub54c \uadf8 \uc6c0\uc9c1\uc778 \uc815\ub3c4\ub97c \uac01 \ub3c4\ub85c \ud45c\uc2dc\ud55c \uac83\uc774 \uadf8 \ubcc4\uc758 ‘\uc5f0\uc8fc\uc2dc\ucc28(annual parallax)’\uc774\ub2e4.[1]
\n
\nd = 206,265 AU\/p<\/strong>
\n\uc5ec\uae30\uc11c \uc2dc\ucc28\uac01 (p)\uc758 \ub2e8\uc704\ub294 \uc544\ud06c\ucd08(arc seconds \u201d)\uc774\uba70 1\ub3c4\ub97c 3600\uc73c\ub85c \ub098\ub208 \ub9e4\uc6b0 \uc791\uc740 \uac01\ub3c4(0.0002777\u00b0)\uc774\ub2e4. \uc774\ub29412.8km (8\ub9c8\uc77c) \ub5a8\uc5b4\uc9c4 \uc9c0\uc810\uc5d0\uc11c 6.2cm \uc9c1\uacbd\uc758 \ud14c\ub2c8\uc2a4 \ubcfc\uc774 \uc774\ub8e8\ub294 \uac01\uacfc \uac19\ub2e4. \uac70\ub9ac(d)\uc758 \ub2e8\uc704 pc(parsec)\ub294 206,265 AU, \uc9893.26\uad11\ub144(\ub2e8\uc704 \uad11\ub144\uc740 \ube5b\uc774 \uc9c4\uacf5\uc5d0\uc11c \uc77c\ub144 \ub3d9\uc548 \ub2ec\ub9ac\ub294 \uac70\ub9ac)\uc774\ub2e4. \ub530\ub77c\uc11c \ud30c \uc138\ud06c(pc) \ub2e8\uc704\ub85c \ud558\ub098\uc758 \ubcc4\uc758 \uac70\ub9ac(d)\ub294 \ub2e4\uc74c\uc758 \uac04\ub2e8\ud55c \uc2dd\uc73c\ub85c \uacb0\uc815\ub420 \uc218 \uc788\ub2e4.<\/p>\n

d (pc) = 1\/p(\u201c)
\n<\/strong>\uba3c\uc800 \ud2b9\uc815\ud55c \ubcc4\uc5d0 \ub300\ud558\uc5ec \uc5f0\uc8fc\uc2dc\ucc28(p)\ub97c \uad00\uce21\ud558\uc5ec \uc2dc\ucc28\uac01\uc744 \uacb0\uc815\ud558\uace0 \uc704\uc758 \uc218\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uadf8 \ubcc4\uc758 \uac70\ub9ac\ub97c \uacc4\uc0b0\ud55c\ub2e4. \uc774\uac83\uc774 \ubc14\ub85c \ud56d\uc131\uc5f0\uc8fc\uc2dc\ucc28 \ubc29\ubc95\uc774 \ub2e4. \uc5ec\uae30\uc11c \uc5f0\uc8fc\uc2dc\ucc28(p)\uac00 \ud06c\uba74 \uc9c0\uad6c\ub85c\ubd80\ud130 \uac00\uae5d\uace0 \uc791\uc73c\uba74 \ubc18\ub300\ub85c \uc9c0\uad6c\ub85c\ubd80\ud130 \ub354 \uba3c \uac70\ub9ac\uc784\uc744 \ub098\ud0c0\ub0b8\ub2e4. \uc774 \ubc29\ubc95\uc740 \ub9e4\uc6b0 \uba3c \uac70\ub9ac\uc758 \ubcc4\ub4e4\uc740 \uc2dc\ucc28\uac01\uc774 \ub108\ubb34 \uc791\uc544\uc11c \uc801\uc6a9\uc774 \ubd88\uac00\ud558\ub2e4. \ub530\ub77c\uc11c \uc774 \uc2dc\ucc28\uce21\uc815\ubc95\uc740 \uc9c0\uad6c\ub85c\ubd80\ud130 \uadfc\uac70\ub9ac \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294\ub370\ub9cc \uc774\uc6a9\ub420 \uc218 \uc788\ub2e4. \uc9c0\uad6c\uc5d0\uc11c \uac00\uc7a5 \uac00\uae4c\uc6b4 \uc54c\ud30c \uc13c\ud1a0\ub9ac \ubcc4(Proxima Alpha Centauri)\uc774 \uac00\uc7a5 \ud070 \uc5f0 \uc8fc\uc2dc\ucc28\ub97c \ubcf4\uc5ec \uc8fc\ub294\ub370, \uadf8 \uac12\uc774 0.76\u201d (0.000211\u00b0 \ub610\ub294 1.32pc = 4.26\uad11\ub144)\uc774\ub2e4. \uc774\ub294 5300m \ub5a8\uc5b4\uc9c4 \uacf3\uc5d0 \uc9c1\uacbd 2cm \uad6c\uc2ac\uc774 \uc774\ub8e8\ub294 \uac01\ub3c4\uc640 \uac19\ub2e4. \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294 \ub610 \ub2e4\ub978 \ubc29\ubc95\uc740 \ubcc4\ube5b\uc758 \ubc1d\uae30\ub97c \uc774\uc6a9\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uc774\ub294 \ubcf4\ud1b5 600\uad11\ub144 \uc774\uc0c1\uc758 \uba3c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294\ub370 \uc0ac\uc6a9\ub41c\ub2e4. \ud558\ub098\uc758 \ud2b9\uc815\ud55c \ubcc4\uc758 \ubc1d\uae30(Brightness)\ub97c \uce21\uc815(Magnitude scale)\ud558\uace0 \uadf8 \ubc1d\uae30\ub97c \ube44\uad50\ud568\uc73c\ub85c \uadf8 \ubcc4\uc758 \uac70\ub9ac\ub97c \uacb0\uc815\ud55c\ub2e4.[2] 1989\ub144 \uc720\ub7fd\uc6b0\uc8fc\uc5f0\ub9f9(ESA)\uc740 HIPPARCOS(High Precision Parallax Collecting Satellite) \uc704\uc131\uc73c\ub85c \ubcf4\ub2e4 \uc815\ud655\ud55c \uc2dc\ucc28\ub97c \uad6c\ud558\uace0\uc790 \ud558\uc600\ub2e4. \uc9c0\ud45c \ub300\uae30\uc758 \uc601\ud5a5\uc744 \ud53c\ud558\uc5ec \uc9c0\uad6c \uc0c1\uacf5\uc744 \uc120\ud68c\ud558\ub294 \uc774 \uc704\uc131\uc73c\ub85c 1993\ub144\uae4c\uc9c0 \uacfc\uac70 \uc5b4\ub290 \ub54c \ubcf4\ub2e4 \ub354\uc6b1 \ub9ce\uc740 \ubcc4\ub4e4\uc5d0 \ub300\ud558\uc5ec \uc815\ud655\ud55c \uc2dc\ucc28\ub97c \uad6c\ud558\uc600\ub2e4(Hipparacos Catalogue\ucc38\uc870).[3] \ud558\uc9c0 \ub9cc \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uacb0\uc815\ud558\ub294 \uc6d0\ub9ac\uc5d0 \uc788\uc5b4\uc11c\ub294 \uc870\uae08\ub3c4 \ub2e4\ub974\uc9c0 \uc54a\ub2e4. \uc774\ub807\uac8c \uc9c0\uc0c1\uc5d0\uc11c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294 \uc9c1\uc811 \ub610\ub294 \uac04\uc811\uc801\uc778 \ubc29\ubc95 \ubaa8\ub450\uac00 \uadfc\ubcf8\uc801\uc73c\ub85c \ube5b\uc744 \ub300\uc0c1\uc73c\ub85c \ud55c\ub2e4. \uc804\uc801\uc73c\ub85c \ube5b\uc5d0 \uc758\uc874\ud558\ub294 \uac83\uc774\ub2e4. \ube5b\uc740 \uc9c4\uacf5\uc5d0 \uc11c \ucd08\uc18d \uc57d 30\ub9cckm\ub97c \uc9c4\ud589\ud558\uc9c0\ub9cc \uc624\ub298\ub0a0 \uacfc\ud559\uc790\ub4e4\uc740 \ube5b\uc758 \uc18d\ub3c4\uac00 \ud1b5\uacfc\ud558\ub294 \uc601\uc5ed\uc5d0 \ub530\ub77c \ubcc0\ud55c\ub2e4\ub294 \uac83\uc744 \uc2e4\ud5d8\uc73c\ub85c \ud655\uc778\ud55c \ubc14 \uc788\ub2e4. \uadf8\ub7ec\ub098 \ubcc4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294 \uc2dc\ucc28\ubc29\ubc95\uc5d0\uc11c\ub294 \ube5b\uc758 \ud728\uc774\ub098 \uc5d0\ub108\uc9c0\uc758 \uc190\uc2e4\ub4f1\uc774\u00a0\uc5c6\ub2e4\uace0 \uac00\uc815\ud574\uc57c\ud558\uba70 \ub610 \uacc4\uc0b0\uc774 \uc801\uc6a9\ub418\ub294 \uacf5\uac04\uc774 \uc0bc\uac01\ud568\uc218\uac00 \uc801\uc6a9\ub420 \uc218 \uc788\ub294 \uae30\ud558\uacf5\uac04(Euclid Space)\uc774\ub77c\uace0 \uac00\uc815\ud574\uc57c \ud55c\ub2e4. \ub9cc\uc77c \ube5b\uc774 \ud1b5\uacfc\ud558\ub294 \uacf5\uac04\uc774 \uc0bc\uac01\ud568\uc218\ub97c \uc801\uc6a9\ud560 \uc218 \uc5c6\ub294 \ud0c0\uc6d0\uc6b0\uc8fc(Elliptical) \ub610\ub294 \uc30d\uace1\uc6b0\uc8fc(Hyperbolic)\ub77c\uba74 \uc774\uc57c\uae30\ub294 \ubaa8\ub450 \ub2ec\ub77c\uc9c4\ub2e4.[4] \ucc9c\ubb38\ud559\uc790\ub4e4\uc740 \uc9c0\uae08\uae4c\uc9c0 \uc5f0\uc8fc\uc2dc\ucc28 \ubc29\ubc95\uc73c\ub85c 600\uad11\ub144\uae4c\uc9c0 \uc57d 12\ub9cc\uac1c \ubcc4\ub4e4 \uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud574 \uc654\ub2e4. \uadf8\ub4e4\uc740 \uc624\ub298\ub0a0 \uc2dc\ucc28\uac01 \uce21\uc815\uc758 \uc624\ucc28 \ubc94\uc704\ub97c 0.001\u201d (0.00000027778\u00b0)\ub85c \ub9d0\ud558\uace0, \uadf8 \uc815\ud655\ub3c4\uc5d0 \ub300\ud558\uc5ec \uc57d 400\uac1c\uc758 \uadfc\uac70\ub9ac \ubcc4\ub4e4\uc758 \uac70 \ub9ac\uc5d0 \ub300\ud558\uc5ec 1%, \uadf8\ub9ac\uace0 \uc57d7000\uac1c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub294 5%\uc758 \uc624\ucc28 \ubc94\uc704\ub85c \uc8fc\uc7a5\ud55c\ub2e4. \ubb3c\ub860 \uce21\uc815\uc7a5\uce58\uc758 \uc815\ubc00\ub3c4\uac00 \ub192\uc544\uc9c0\uace0 \uacc4\uc0b0\uae30\uc758 \uc624\ucc28\uac00 \uc904\uc740 \uac83\uc740 \uc0ac\uc2e4\uc774\ub2e4. \ud558 \uc9c0\ub9cc \uc544\ubb34\ub9ac \uc815\ud655\uc131\uc774 \ub192\uc544\uc84c\uc5b4\ub3c4 \uadf8 \uac70\ub9ac\ub4e4\uc774 \uc5bc\ub9c8\ub098 \uc815\ud655\ud55c \uac83\uc778\uc9c0 \uac80\uc99d\ud560 \ub2e4\ub978 \ub300\uc548\uc774 \uc5c6\ub2e4. \uac00\uc7a5 \uac00\uae5d\ub2e4\ub294 \uc54c\ud30c \uc13c\ud1a0\ub9ac \ubcc4\uae4c\uc9c0 4.26\uad11\ub144\uc774\uc9c0\ub9cc \uc774\ub97c \uac80 \uc99d\ud560 \ub2e4\ub978 \uae30\uc220\uc774 \uc5c6\ub294 \uac83\uc774\ub2e4. \uacb0\ub860\uc801\uc73c\ub85c \uacc4\uc0b0\ub41c \ubcc4\ub4e4\uc758 \uac70\ub9ac\uc5d0 \ub300\ud55c \uc815\ud655\uc131\uc774 \uc5b4\ub5bb\ub4e0 \ubcc4\ub4e4\uc740 \uc9c0\uad6c\ub85c\ubd80\ud130 \ub9e4\uc6b0 \uba3c \uac70\ub9ac\uc5d0 \uc788\ub2e4. \uc800\uc808\ub85c \uc6b0\uc8fc\uac00 \uc0dd\uacbc\ub2e4\uba74\u2026 \uc9c4\ud654\uac00 \uc0ac\uc2e4\uc774\ub77c\uba74\u2026 \uc65c \uc218\uc5c6 \uc774 \ub9ce\uc740 \ubcc4\ub4e4\uc774 \uadf8\ub807\uac8c \uba40\ub9ac \ub5a8\uc5b4\uc838 \uc788\uc744\uae4c? \uadf8\ub7f4 \ud544\uc694\uac00 \uc5c6\uc744 \ud150\ub370\u2026\u2026. \uc624\uc9c1 \uc131\uacbd\ub9cc\uc774 \u201c\ud558\ub298\uc774 \ud558\ub098\ub2d8\uc758 \uc601\uad11\uc744 \uc120\ud3ec\ud558\uace0 \uadf8\uac00 \ud558\uc2e0 \uc77c\uc744 \ub098\ud0c0\ub0b4\uace0 \uc788\ub2e4(\uc2dc 19:1)\u201d\uace0 \uadf8 \uc774\uc720\ub97c \ub9d0\ud574 \uc8fc\uace0 \uc788\ub2e4.
\n[1] Palen, S., Theory and Problems of Astronomy, Schaum\u2019s Outline Series, McGrawHill, 2002. [2] Ridpath, I., A Dictionary of Astronomy, Oxford University Press, 1997. [3] Perryman, M.A.C., et al, The HIPPARCOS Catalogue, Astronomy & Astrophysics 323: L49L52, 1999. [4] NASA, Shape of the Universe, WMAP Web: http: \/\/map.gsfc.nasa.gov\/universe\/uni_shape.html.<\/p>\n","protected":false},"excerpt":{"rendered":"

\uc2e4\uc81c\ub85c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uc5b4\ub5bb\uac8c \uacb0\uc815\ud560\uae4c? \ub610 \uacb0\uc815\ub41c \uac70\ub9ac\ub294 \uc5bc\ub9c8\ub098 \uc815\ud655\ud55c \uac83\uc77c\uae4c? \uadf8\ub9ac\uace0 \uac80\uc99d\uc740 \uac00\ub2a5\ud55c\uac00? \uc5ec\uae30\uc11c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uacb0\uc815\ud558\ub294 \ubc29\ubc95\uc744 \uc18c\uac1c\ud558\ub824\uace0 \ud55c\ub2e4. \ucc9c\ubb38\ud559\uc790\ub4e4\uc740 \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294\ub370 \uc2dc\ucc28(Parallax)\ubc29\ubc95\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uc2dc\ucc28\ub77c\ub294 \uac83\uc740 \uc18c\uc704 \uac89\ubcf4\uae30 \ubcc0\uc704(Shift)\ub97c \ub9d0\ud558\ub294\ub370 \ud55c \ubb3c\uccb4\ub97c \uad00\uce21\ud560 \ub54c \ub450\uac1c\uc758 \uc11c\ub85c \ub2e4\ub978 \uc870\uc900\uc120(Line of Sight)\uc774 \uad50\ucc28\ud558\uba74\uc11c \ubc30\ud6c4 \uba74\uc5d0 \ub9cc\ub4dc\ub294 \uac70\ub9ac\uc774\ub2e4.<\/p>\n

\uc2e4\uc81c\ub85c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uc5b4\ub5bb\uac8c \uacb0\uc815\ud560\uae4c? \ub610 \uacb0\uc815\ub41c \uac70\ub9ac\ub294 \uc5bc\ub9c8\ub098 \uc815\ud655\ud55c \uac83\uc77c\uae4c? \uadf8\ub9ac\uace0 \uac80\uc99d\uc740 \uac00\ub2a5\ud55c\uac00? \uc5ec\uae30\uc11c \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \uacb0\uc815\ud558\ub294 \ubc29\ubc95\uc744 \uc18c\uac1c\ud558\ub824\uace0 \ud55c\ub2e4. \ucc9c\ubb38\ud559\uc790\ub4e4\uc740 \ubcc4\ub4e4\uc758 \uac70\ub9ac\ub97c \ucd94\uc815\ud558\ub294\ub370 \uc2dc\ucc28(Parallax)\ubc29\ubc95\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uc2dc\ucc28\ub77c\ub294 \uac83\uc740 \uc18c\uc704 \uac89\ubcf4\uae30 \ubcc0\uc704(Shift)\ub97c \ub9d0\ud558\ub294\ub370 \ud55c \ubb3c\uccb4\ub97c \uad00\uce21\ud560 \ub54c \ub450\uac1c\uc758 \uc11c\ub85c \ub2e4\ub978 \uc870\uc900\uc120(Line of Sight)\uc774 \uad50\ucc28\ud558\uba74\uc11c \ubc30\ud6c4 \uba74\uc5d0 \ub9cc\ub4dc\ub294 \uac70\ub9ac\uc774\ub2e4.<\/p>\n

s01<\/p>\n

\uc9c0\uad6c\uac00 \ud0dc\uc591\uc758 \uada4\ub3c4\ub97c \uc120\ud68c\ud568\uc5d0 \ub530\ub77c\uc11c \uac00\uae4c\uc6b4 \uac70\ub9ac\uc758 \ubcc4\ub4e4\uc740 \ubcf4\ub2e4 \uba3c \ubcc4\ub4e4 \uc5d0 \ub300\ud558\uc5ec \uc0c1\ub300\uc801\uc73c\ub85c \uc704\uce58\uac00 \ub354 \ud06c\uac8c \ubcc0\ud558\ub294 \uac83\uc73c\ub85c \ubcf4\uc778\ub2e4. \uadf8\ub9bc\uacfc \uac19\uc774 1\uc6d4 \uc5d0 \ud558\ub098\uc758 \ubcc4\uc744 \uad00\uce21\ud558\uace0 6\uac1c\uc6d4 \ud6c4 7\uc6d4\uc5d0 \ub3d9\uc77c\ud55c \uadf8 \ubcc4\uc744 \uad00\uce21\ud558\uba74 \uc6d0\uac70\ub9ac \ubc30\uacbd \uc5d0 \uc788\ub294 \ubcc4\ub4e4\uc5d0 \ub300\ud558\uc5ec \uc704\uce58\uac00 \ubcc0\ud55c \uac83\uc744 \uc54c \uc218 \uc788\ub2e4. \uc774 \ub54c \uadf8 \uc6c0\uc9c1\uc778 \uc815\ub3c4\ub97c \uac01 \ub3c4\ub85c \ud45c\uc2dc\ud55c \uac83\uc774 \uadf8 \ubcc4\uc758 ‘\uc5f0\uc8fc\uc2dc\ucc28(annual parallax)’\uc774\ub2e4.[1]<\/p>\n

d = 206,265 AU\/p
\n\uc5ec\uae30\uc11c \uc2dc\ucc28\uac01 (p)\uc758 \ub2e8\uc704\ub294 \uc544\ud06c\ucd08(arc seconds \u201d)\uc774\uba70 1\ub3c4\ub97c 3600\uc73c\ub85c \ub098\ub208 \ub9e4\uc6b0 \uc791\uc740 \uac01\ub3c4(0.0002777\u00b0)\uc774\ub2e4. \uc774\ub29412.8km (8\ub9c8\uc77c) \ub5a8\uc5b4\uc9c4 \uc9c0\uc810\uc5d0\uc11c 6.2cm \uc9c1\uacbd\uc758 \ud14c\ub2c8\uc2a4 \ubcfc\uc774 \uc774\ub8e8\ub294 \uac01\uacfc \uac19\ub2e4. \uac70\ub9ac(d)\uc758 \ub2e8\uc704 pc(parsec)\ub294 206,265 AU, \uc9893.26\uad11\ub144(\ub2e8\uc704 \uad11\ub144\uc740 \ube5b\uc774 \uc9c4\uacf5\uc5d0\uc11c \uc77c\ub144 \ub3d9\uc548 \ub2ec\ub9ac\ub294 \uac70\ub9ac)\uc774\ub2e4. \ub530\ub77c\uc11c \ud30c \uc138\ud06c(pc) \ub2e8\uc704\ub85c \ud558\ub098\uc758 \ubcc4\uc758 \uac70\ub9ac(d)\ub294 \ub2e4\uc74c\uc758 \uac04\ub2e8\ud55c \uc2dd\uc73c\ub85c \uacb0\uc815\ub420 \uc218 \uc788\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":11877,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/posts\/11876"}],"collection":[{"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.hisark.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11876"}],"version-history":[{"count":1,"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/posts\/11876\/revisions"}],"predecessor-version":[{"id":113595,"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/posts\/11876\/revisions\/113595"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.hisark.com\/index.php?rest_route=\/wp\/v2\/media\/11877"}],"wp:attachment":[{"href":"http:\/\/www.hisark.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.hisark.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11876"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.hisark.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}