🌑 LDN 1700
Object data
| Type | Dark nebula |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h12m13.7s (258.0570°) |
| Declination | -31°33'34" (-31.5595°) |
| Magnitude | (no magnitude data) |
| Apparent size | 49.52′ |
| Other designations | LDN 1700 |
A Lynds dark nebula in Scorpius. Opacity class 2 (1 = faintest to 6 = darkest).
Midnight transit date (best season to observe and image)
Location: Tokyo (change)
Around Jun 5, 2026
The date it transits around midnight (transit altitude about 23°)
This date has already passed this year. Next year (2027) it will be around Jun 5.
For about 2–3 weeks either side of this date, the object stays high from evening to dawn — its observing season.
Best time to observe tonight
Tonight (Oct 16 evening – Oct 17 dawn) · Location: Tokyo (full darkness = end of astronomical dusk to start of dawn, altitude ≥ 15°)
Moon tonight: Waxing crescent (age 4.7 days, 23% illuminated)
It does not reach 15° during full darkness tonight (it is high only in daytime or twilight at this time of year).
Night (sunset – sunrise)
Full darkness (dusk – dawn)
Moon up (darker = brighter moon)
Best time to observe (thick line)
Now
Sunset 17:05 → Dusk 18:29 → Dawn 4:23 → Sunrise 5:48