城市 / United States
Fairbanks 费尔班克斯
64.84°N, 147.72°W · America/Anchorage · 以下时间均为当地时间
At 64.8°N the orbit's 51.6° inclination caps the station at about 77° above your horizon; and the sky stays properly dark for 10.1 hours.
轨道与暮光计算于 2026-10-29 21:16 UTC 数据 · 1.5 h前
天完全黑下来是 20:34 到 06:40（10.1 小时）; 火星 是最高的一颗行星，41°，方位东北，约 07:28; 月亮亮度 82%（亏凸月）.
今晚时间轴Fairbanks · 17:46 → 09:28
交互式计划 →At 82% illuminated the Moon is the brightest thing in the sky tonight and will wash out fainter targets while it is up. Look for the planets anyway — they cut through moonlight better than almost anything else.
我们只跟踪三颗亮到值得出门一看的目标：空间站, 中国的天宫空间站，以及哈勃 Space Telescope。它们都在约 7.5 km/s 上运行，90–95 分钟绕一圈，但只有visible 「它在阳光里、你这边已经黑了」才算数——所以过境总是挤在日落后两小时和日出前。
Elevation is the angle above your horizon. 10° is easy to spot if you know where to look; 45° is unmistakable — brighter than any star, moving like an aircraft that makes no sound. The last column tells you where to look first and where it will disappear.
哈勃 is far fainter than the two stations: treat it as a dark-sky target for people who already know the sky, not a first sighting.
位置由当前 Celestrak 两行根数用 SGP4 递推，并按你的坐标换算；精度在几公里，对「它是不是在我头顶」这个问题足够。旧根数带来的偏差是秒级，不是整圈级。
附近城市按距离排序，每个都用自身坐标重算
全部 170 座城市 →其他 cities
同样的算法跑 170 个地点。