什么时候可以看到NGC6640？
查看NGC6640在你所在位置全年的可见性变化。图表显示各季节的观测时段，表格列出所选日期的升起、中天和落下时间。
NGC6640将持续可见至11月14日，随后因过于接近太阳而暂时从夜空中消失。
观测NGC6640的最佳月份
根据NGC6640在黑夜或暮光期间位于地平线以上的时长，未来一年中最适合观测的月份是2027年6月, 2027年7月, 2027年5月。
NGC6640全年的可见情况
NGC6640在 2026-10-28 的可见情况
NGC6640升起与落下时间表
| 时间 | 高度角 | |
| NGC6640中天 | 17:05 | 57° |
| 日落 | 18:49 | 49° |
| 民用暮光开始 | 19:11 | 46° |
| 暮光开始 (−12°) | 19:36 | 42° |
| 天文观测时段开始 | 20:01 | 37° |
月出，照明比例 95.2%  | 20:52 | 28° |
| NGC6640落下 | 23:08 | |
| 天文观测时段结束 | 05:35 | -54° |
| 月落 | 09:30 | -18° |
| NGC6640升起 | 10:59 |
跟踪NGC6640整夜的位置变化
← 2026年10月28日 →
| 时间 | |
| 高度角 | |
| 方位角 |
移动星图可更改时间，并观察NGC6640在夜空中的位置变化。
NGC6640每日升起、中天与落下时间
| 日期 | 升起—落下 | 中天 | 暮光 | 坐标 | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2026-10-28 | 11:03 - 23:08 | 17:05 | 18:47 - 06:47 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-11-04 | 10:35 - 22:41 | 16:38 | 18:47 - 06:47 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-11-11 | 10:08 - 22:13 | 16:10 | 18:47 - 06:48 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-11-18 | 09:40 - 21:46 | 15:43 | 18:48 - 06:49 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-11-25 | 09:13 - 21:18 | 15:15 | 18:50 - 06:51 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-12-02 | 08:45 - 20:51 | 14:48 | 18:52 - 06:53 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-12-09 | 08:18 - 20:23 | 14:20 | 18:55 - 06:56 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-12-16 | 07:50 - 19:55 | 13:53 | 18:58 - 07:00 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-12-23 | 07:23 - 19:28 | 13:25 | 19:01 - 07:03 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2026-12-30 | 06:55 - 19:00 | 12:58 | 19:05 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-01-06 | 06:28 - 18:33 | 12:30 | 19:08 - 07:10 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-01-13 | 06:00 - 18:05 | 12:03 | 19:11 - 07:12 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-01-20 | 05:32 - 17:38 | 11:35 | 19:14 - 07:15 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-01-27 | 05:05 - 17:10 | 11:08 | 19:16 - 07:16 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-02-03 | 04:37 - 16:43 | 10:40 | 19:17 - 07:17 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-02-10 | 04:10 - 16:15 | 10:13 | 19:18 - 07:18 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-02-17 | 03:42 - 15:48 | 09:45 | 19:18 - 07:17 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-02-24 | 03:15 - 15:20 | 09:18 | 19:17 - 07:16 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-03-03 | 02:47 - 14:53 | 08:50 | 19:16 - 07:15 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-03-10 | 02:20 - 14:25 | 08:23 | 19:15 - 07:13 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-03-17 | 01:48 - 13:54 | 07:51 | 19:13 - 07:11 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-03-24 | 01:21 - 13:26 | 07:24 | 19:11 - 07:08 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-03-31 | 00:53 - 12:59 | 06:56 | 19:09 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-04-07 | 00:26 - 12:31 | 06:28 | 19:08 - 07:04 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-04-14 | 23:58 - 12:04 | 06:01 | 19:06 - 07:02 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-04-21 | 23:31 - 11:36 | 05:33 | 19:05 - 07:00 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-04-28 | 23:03 - 11:09 | 05:06 | 19:04 - 06:58 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-05-05 | 22:36 - 10:41 | 04:38 | 19:03 - 06:57 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-05-12 | 22:08 - 10:14 | 04:11 | 19:03 - 06:57 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-05-19 | 21:41 - 09:46 | 03:43 | 19:03 - 06:56 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-05-26 | 21:13 - 09:19 | 03:16 | 19:04 - 06:57 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-06-02 | 20:46 - 08:51 | 02:48 | 19:05 - 06:58 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-06-09 | 20:18 - 08:23 | 02:21 | 19:06 - 06:59 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-06-16 | 19:51 - 07:56 | 01:53 | 19:08 - 07:00 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-06-23 | 19:23 - 07:28 | 01:26 | 19:09 - 07:02 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-06-30 | 18:56 - 07:01 | 00:58 | 19:11 - 07:03 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-07-07 | 18:28 - 06:33 | 00:31 | 19:12 - 07:04 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-07-14 | 18:00 - 06:06 | 00:03 | 19:13 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-07-21 | 17:33 - 05:38 | 23:36 | 19:13 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-07-28 | 17:05 - 05:11 | 23:08 | 19:13 - 07:07 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-08-04 | 16:38 - 04:43 | 22:41 | 19:13 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-08-11 | 16:10 - 04:16 | 22:13 | 19:12 - 07:06 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-08-18 | 15:43 - 03:48 | 21:46 | 19:10 - 07:05 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-08-25 | 15:15 - 03:21 | 21:18 | 19:08 - 07:03 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-09-01 | 14:48 - 02:53 | 20:51 | 19:06 - 07:01 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-09-08 | 14:20 - 02:26 | 20:23 | 19:03 - 06:59 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-09-15 | 13:53 - 01:58 | 19:55 | 19:01 - 06:57 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-09-22 | 13:25 - 01:31 | 19:28 | 18:58 - 06:55 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-09-29 | 12:58 - 01:03 | 19:00 | 18:55 - 06:53 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-10-06 | 12:30 - 00:36 | 18:33 | 18:53 - 06:51 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-10-13 | 12:03 - 00:08 | 18:05 | 18:51 - 06:49 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-10-20 | 11:35 - 23:41 | 17:38 | 18:49 - 06:48 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||
| 2027-10-27 | 11:08 - 23:13 | 17:10 | 18:48 - 06:47 | RA: 18h 28m 08s", Dec: 34° 18' 09s @ 天琴座 | |||||