20:
222:
246:
198:
234:
210:
110:
when involving bright planets and the Moon. They facilitate finding faint objects when such objects are involved. Very close appulse events provide an opportunity to witness two objects together in the same telescopic field of view, which is an appealing curiosity in amateur telescopy, e.g.
88:(such as planets) occasionally display an appulse event without an associated conjunction event. In these cases, the two objects appear to approach each other, but turn away before reaching a momentary coincidence of right ascension.
271:
62:, as seen from Earth. An appulse is an apparent phenomenon caused by perspective only; the two objects involved are not near in physical space.
91:
When the celestial bodies appear so close together that one actually passes in front of the other, the event is classified as a
146:
46:
and another, as seen from a third body during a given period. Appulse is seen in the apparent motion typical of two
85:
144:
73:
between two bodies is at its minimum, a conjunction occurs at the moment when the two bodies have the same
31:
in the evening sky on three consecutive days. The centre image shows an appulse between the two objects.
188:
78:
66:
120:
81:. In general, the precise time of an appulse will be different from that of a conjunction.
8:
266:
250:
92:
70:
43:
238:
226:
125:
107:
202:
39:
154:
145:
Her
Majesty's Nautical Almanac Office and United States Naval Observatory (2012).
74:
19:
260:
214:
96:
69:, but the definitions differ in detail. While an appulse occurs when the
100:
47:
59:
28:
55:
51:
24:
209:
186:
16:
Apparent least distance between two celestial objects
258:
111:Jupiter-Saturn appulse of December 13, 2020.
174:
151:Glossary, The Astronomical Almanac Online
179:. Willman-Bell Inc., Richmond, Virginia.
18:
272:Astronomical events of the Solar System
259:
13:
106:Appulses are naked-eye events for
14:
283:
244:
232:
220:
208:
196:
58:or planet while the Moon orbits
50:together in the sky, or of the
168:
138:
1:
131:
7:
114:
65:An appulse is related to a
10:
288:
177:Astronomical Algorithms
121:Opposition (astronomy)
103:, and not an appulse.
84:Objects which exhibit
32:
22:
175:Jean Meeus (1991).
71:apparent separation
126:Syzygy (astronomy)
79:ecliptic longitude
33:
108:general observers
86:retrograde motion
40:apparent distance
279:
249:
248:
247:
237:
236:
235:
225:
224:
223:
213:
212:
201:
200:
199:
192:
181:
180:
172:
166:
165:
163:
162:
153:. Archived from
142:
44:celestial object
287:
286:
282:
281:
280:
278:
277:
276:
257:
256:
255:
245:
243:
233:
231:
221:
219:
207:
197:
195:
187:
185:
184:
173:
169:
160:
158:
143:
139:
134:
117:
75:right ascension
17:
12:
11:
5:
285:
275:
274:
269:
254:
253:
241:
229:
217:
205:
183:
182:
167:
136:
135:
133:
130:
129:
128:
123:
116:
113:
15:
9:
6:
4:
3:
2:
284:
273:
270:
268:
265:
264:
262:
252:
242:
240:
230:
228:
218:
216:
211:
206:
204:
194:
193:
190:
178:
171:
157:on 2020-10-21
156:
152:
148:
141:
137:
127:
124:
122:
119:
118:
112:
109:
104:
102:
98:
94:
89:
87:
82:
80:
76:
72:
68:
63:
61:
57:
53:
49:
45:
41:
38:is the least
37:
30:
26:
21:
251:Solar System
176:
170:
159:. Retrieved
155:the original
150:
140:
105:
90:
83:
64:
42:between one
35:
34:
239:Outer space
227:Spaceflight
97:occultation
67:conjunction
267:Astrometry
261:Categories
161:2014-10-28
132:References
203:Astronomy
147:"Appulse"
115:See also
189:Portals
101:eclipse
93:transit
48:planets
36:Appulse
215:Stars
99:, or
60:Earth
54:to a
29:Venus
56:star
52:Moon
27:and
25:Moon
23:The
77:or
263::
149:.
95:,
191::
164:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.