NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC6400

 

Basic Information


Location and Magnitude


Right Ascension: 17:40:12.0
Declination: -36:57:42
Constellation: SCO
Visual Magnitude: 8.8

Historic Information


Discoverer: Dunlop
Year of discovery: 1826
Discovery aperture: 9.0

Observational


Summary description: Cl, pL, pRi, iR, st 9…10
Sub-type: II2m

Corwin's Notes

===== NGC 6400. Here, coincidentally, is the next open cluster in the NGC after NGC 6396 (which see), and another object where JH may have recorded the wrong wire -- his RA for the cluster is 40 seconds too small. In the sweep, he claims wire 2; if he actually observed the cluster leaving the field, his RA would be 17 40 06 for J2000, just six seconds of time off the actual RA. As with NGC 6396, the cluster is too obvious to misidentify, even if JH's mistake is not due to a wire error. He found this cluster, by the way, on 28 June 1834.

Steve's Notes

===== NGC 6400 17.5" (6/30/00): ~50 stars are resolved in an 8'x5' region at 220x. The stars are fairly uniform in brightness though irregular in outline. The cluster is elongated N-S with a nice string extending through the cluster to the SSE and NNE with a slight bend near the center. At the kink in the string is a denser clump of stars. There are circular voids on the NW and SW ends. The two brighter strings (on the following side) and two less distinct rows of stars create a vague "X" shape through the cluster with a close loop on the north end. 8" (6/27/81): faint, fairly small, fairly rich. Many stars are aligned in rows.