72:(used in the computation) will not appreciably affect the result. By this it will be understood that the best time to observe a longitude sight (be it sun, moon, planet, or star) is when the body is on the prime vertical; but it is to be explained that it is not always possible to obtain such an observation, for a heavenly body can only be true east or true west when its declination is of the same name as the ship's latitude and less than the latter. When the declination of the body is of the same name but greater than the ship's latitude, the body's nearest approach will be some time after it has risen; but when the declination is of a contrary nature to the latitude, the body will be the nearest to the prime vertical at its rising and setting.
244:
176:
67:
A heavenly body is in or on the prime vertical when it bears true east or true west—when it is at right angles to the meridian. When a body is observed on the prime vertical for the purpose of calculating the longitude, a considerable error in the latitude by
196:
304:
285:
191:
116:
225:
278:
309:
271:
87:
56:
132:
221:
157:
112:
255:
213:
243:
40:
69:
51:
in its east and west points. In other words, the prime vertical is the vertical circle
298:
187:
182:
133:"Prime Vertical · Astrological definition of Prime Vertical · Astrology Encyclopedia"
52:
82:
251:
24:
20:
200:. Vol. 22 (11th ed.). Cambridge University Press. p. 338.
48:
28:
44:
181:
This article incorporates text from a publication now in the
60:
59:, and passes through the east and west points, zenith, and
259:
65:
111:. New York: Taylor & Francis. p. 22.
279:
47:of a specific location, and intersecting the
8:
220:. Vol. 3. Firewall Media. p. 17.
286:
272:
99:
7:
240:
238:
258:. You can help Knowledge (XXG) by
43:passing east and west through the
14:
242:
174:
305:Astronomical coordinate systems
1:
162:The Navigator's Pocket-book
83:Earth radius#Prime vertical
16:Celestial coordinate system
326:
237:
156:Patterson, Howard (1917).
109:Fundamentals of Astronomy
107:Barbieri, Cesare (2007).
214:"Star at Prime Vertical"
197:Encyclopædia Britannica
254:-related article is a
212:Punmia, B. C. (2005).
74:
88:Meridian (astronomy)
137:astrologyweekly.com
164:. pp. 121–22.
267:
266:
118:978-0-7503-0886-1
317:
288:
281:
274:
246:
239:
231:
201:
180:
178:
177:
166:
165:
158:"Prime Vertical"
153:
147:
146:
144:
143:
129:
123:
122:
104:
325:
324:
320:
319:
318:
316:
315:
314:
310:Astronomy stubs
295:
294:
293:
292:
235:
228:
211:
208:
190:, ed. (1911). "
186:
175:
173:
170:
169:
155:
154:
150:
141:
139:
131:
130:
126:
119:
106:
105:
101:
96:
79:
41:vertical circle
17:
12:
11:
5:
323:
321:
313:
312:
307:
297:
296:
291:
290:
283:
276:
268:
265:
264:
247:
233:
232:
226:
207:
206:External links
204:
203:
202:
192:Prime Vertical
188:Chisholm, Hugh
168:
167:
148:
124:
117:
98:
97:
95:
92:
91:
90:
85:
78:
75:
70:dead-reckoning
63:of any place.
37:first vertical
33:prime vertical
15:
13:
10:
9:
6:
4:
3:
2:
322:
311:
308:
306:
303:
302:
300:
289:
284:
282:
277:
275:
270:
269:
263:
261:
257:
253:
248:
245:
241:
236:
229:
227:9788170088257
223:
219:
215:
210:
209:
205:
199:
198:
193:
189:
184:
183:public domain
172:
171:
163:
159:
152:
149:
138:
134:
128:
125:
120:
114:
110:
103:
100:
93:
89:
86:
84:
81:
80:
76:
73:
71:
64:
62:
58:
54:
53:perpendicular
50:
46:
42:
38:
34:
30:
26:
22:
260:expanding it
249:
234:
217:
195:
161:
151:
140:. Retrieved
136:
127:
108:
102:
66:
36:
32:
18:
299:Categories
142:2017-02-25
94:References
252:astronomy
218:Surveying
25:astrology
21:astronomy
77:See also
57:meridian
185::
55:to the
49:horizon
39:is the
29:geodesy
224:
179:
115:
45:zenith
31:, the
27:, and
250:This
61:nadir
256:stub
222:ISBN
113:ISBN
194:".
35:or
19:In
301::
216:.
160:.
135:.
23:,
287:e
280:t
273:v
262:.
230:.
145:.
121:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
