Discovered by Charles Messier on February 19, 1771.
H IV.39 [NGC 2438]
h 464.
h 464 = H IV.39.
Sweep 111 (December 16, 1827)
RA 7h 34m 1.6s, NPD 104d 20' 25" (1830.0)
A planetary neb 3s.75 (time) in diam. Exactly R of a F equable light.
Has a v minute * n l n of centre. It is not b M nor fading away, but a
little velvety at the edges. At the n edge of the fine cl M46.
A planetary nebula 3.75 s (time) in diameter. Exactly round of a faint
equable light. Has a very minute star north l n of centre. It is not
brighter to the middle nor fading away, but a little velvety at the
edges. At the northern edge of the fine cluster M46.
GC 1565 = h 464 = h 3093 = H IV.39.
RA 7h 35m 25.4s, NPD 104d 29' 39.4" (1860.0)
PN; pB; pS; vlE; r; 3s.75 d.
4 observations by W. & J. Herschel.
Planetary Nebula; pretty bright; pretty small; very little extended
[elongated]; round; 3s.75 diameter.
Remark: Figure in P.T. 50 [Rosse 1850], plate xxxviii, fig. 12.
NGC 2438:
NGC 2438 = GC 1565 = h 464 = h 3093 = H IV.39.
RA 7h 35m 26s, NPD 104d 25.0' (1860.0)
PN, pB, pS, vlE, r, 3s.75 d
Planetary Nebula, pretty bright, pretty small, very little extended
[elongated], round, 3s.75 diameter.
Remark: Figures in
P.T. 50 [Rosse 1850], plate XXXVIII, fig. 12;
Lass [Lassell, Memoirs R.A.S. vol xxiii], plate II, fig. 5;
Secchi [Memorie dell' Osserv. del Collegio Romano, 1852-55],
plate IV, fig. 11.
Last Modification: March 18, 2006