什么时候可以看到Alnilam (NGC1990)？
查看Alnilam (NGC1990)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。
Alnilam (NGC1990)将持续可见至5月5日，随后因过于接近太阳而暂时从夜空中消失。
观测Alnilam (NGC1990)的最佳月份
根据Alnilam (NGC1990)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2026年12月, 2026年11月, 2027年1月。
Alnilam (NGC1990)全年的可见情况
Alnilam (NGC1990)在 2026-11-12 的可见情况
Alnilam (NGC1990)升起与落下时间表
| 时间 | 高度角 | |
月出，照明比例 7%  | 08:06 | 1° |
| 天文观测时段开始 | 18:59 | -17° |
| Alnilam (NGC1990)升起 | 20:08 | |
| 月落 | 20:32 | 6° |
| Alnilam (NGC1990)中天 | 02:07 | 89° |
| 天文观测时段结束 | 04:28 | 55° |
| 暮光结束 (−12°) | 04:53 | 48° |
| 民用暮光结束 | 05:19 | 42° |
| 日出 | 05:41 | 36° |
| Alnilam (NGC1990)落下 | 08:06 |
跟踪Alnilam (NGC1990)整夜的位置变化
← 2026年11月12日 →
| 时间 | |
| 高度角 | |
| 方位角 |
移动星图可更改时间，并观察Alnilam (NGC1990)在夜空中的位置变化。
Alnilam (NGC1990)每日升起、中天与落下时间
| 日期 | 升起—落下 | 中天 | 暮光 | 坐标 | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2026-11-12 | 20:12 - 08:10 | 02:11 | 17:43 - 05:40 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-11-19 | 19:44 - 07:42 | 01:43 | 17:44 - 05:41 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-11-26 | 19:17 - 07:15 | 01:16 | 17:46 - 05:43 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-12-03 | 18:49 - 06:47 | 00:48 | 17:49 - 05:46 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-12-10 | 18:22 - 06:20 | 00:21 | 17:52 - 05:49 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-12-17 | 17:50 - 05:48 | 23:49 | 17:55 - 05:52 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-12-24 | 17:23 - 05:21 | 23:22 | 17:58 - 05:55 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2026-12-31 | 16:55 - 04:53 | 22:54 | 18:02 - 05:59 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-01-07 | 16:28 - 04:26 | 22:27 | 18:05 - 06:02 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-01-14 | 16:00 - 03:58 | 21:59 | 18:08 - 06:05 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-01-21 | 15:33 - 03:31 | 21:32 | 18:10 - 06:07 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-01-28 | 15:05 - 03:03 | 21:04 | 18:12 - 06:09 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-02-04 | 14:38 - 02:36 | 20:37 | 18:13 - 06:10 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-02-11 | 14:10 - 02:08 | 20:09 | 18:13 - 06:10 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-02-18 | 13:43 - 01:41 | 19:42 | 18:13 - 06:10 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-02-25 | 13:15 - 01:13 | 19:14 | 18:12 - 06:09 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-03-04 | 12:47 - 00:46 | 18:47 | 18:11 - 06:08 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-03-11 | 12:20 - 00:18 | 18:19 | 18:09 - 06:06 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-03-18 | 11:52 - 23:50 | 17:51 | 18:07 - 06:04 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-03-25 | 11:25 - 23:23 | 17:24 | 18:05 - 06:02 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-04-01 | 10:57 - 22:55 | 16:56 | 18:03 - 06:00 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-04-08 | 10:30 - 22:28 | 16:29 | 18:01 - 05:58 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-04-15 | 10:02 - 22:00 | 16:01 | 17:59 - 05:56 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-04-22 | 09:35 - 21:33 | 15:34 | 17:58 - 05:55 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-04-29 | 09:07 - 21:05 | 15:06 | 17:56 - 05:54 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-05-06 | 08:40 - 20:38 | 14:39 | 17:56 - 05:53 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-05-13 | 08:12 - 20:10 | 14:11 | 17:55 - 05:52 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-05-20 | 07:45 - 19:43 | 13:44 | 17:56 - 05:53 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-05-27 | 07:17 - 19:15 | 13:16 | 17:56 - 05:53 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-06-03 | 06:50 - 18:48 | 12:49 | 17:57 - 05:54 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-06-10 | 06:22 - 18:20 | 12:21 | 17:58 - 05:55 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-06-17 | 05:55 - 17:53 | 11:54 | 18:00 - 05:57 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-06-24 | 05:27 - 17:25 | 11:26 | 18:01 - 05:58 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-07-01 | 05:00 - 16:58 | 10:59 | 18:03 - 06:00 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-07-08 | 04:32 - 16:30 | 10:31 | 18:04 - 06:01 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-07-15 | 04:05 - 16:03 | 10:04 | 18:05 - 06:02 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-07-22 | 03:37 - 15:35 | 09:36 | 18:05 - 06:02 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-07-29 | 03:10 - 15:08 | 09:09 | 18:06 - 06:03 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-08-05 | 02:42 - 14:40 | 08:41 | 18:05 - 06:02 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-08-12 | 02:14 - 14:13 | 08:13 | 18:04 - 06:01 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-08-19 | 01:47 - 13:45 | 07:46 | 18:03 - 06:00 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-08-26 | 01:19 - 13:17 | 07:18 | 18:01 - 05:58 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-09-02 | 00:52 - 12:50 | 06:51 | 17:59 - 05:56 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-09-09 | 00:24 - 12:22 | 06:23 | 17:56 - 05:54 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-09-16 | 23:57 - 11:55 | 05:56 | 17:54 - 05:51 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-09-23 | 23:29 - 11:27 | 05:28 | 17:52 - 05:49 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-09-30 | 23:02 - 11:00 | 05:01 | 17:49 - 05:46 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-10-07 | 22:34 - 10:32 | 04:33 | 17:47 - 05:44 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-10-14 | 22:07 - 10:05 | 04:06 | 17:45 - 05:42 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-10-21 | 21:39 - 09:37 | 03:38 | 17:44 - 05:41 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-10-28 | 21:12 - 09:10 | 03:11 | 17:43 - 05:40 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-11-04 | 20:44 - 08:42 | 02:43 | 17:43 - 05:40 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||
| 2027-11-11 | 20:17 - 08:15 | 02:16 | 17:43 - 05:40 | RA: 05h 36m 12s", Dec: -1° 12' 06s @ 猎户座 | |||||