| Observer | Location | Telescope | Images/Drawings | |
|---|---|---|---|---|
| Einaga, Hideo | (Hyogo, Japan) | 30cm Refl. | 4 | images |
| Fukui, Hideto | (Shizuoka, Japan) | 35cm SCT. | 10 | images |
| Hayashi, Toshio | (Kyoto, Japan) | 35cm SCT | 3 | images |
| Horikawa, Kuniaki | (Yokohama, Japan) | 16cm Refl. | 4 | drawings, 1 image |
| Mishina, Toshiroh | (Yokohama, Japan) | 20cm Refl. | 6 | images |
| Narita, Hiroshi | (Kawasaki, Japan) | 20cm Refr. | 2 | drawings |
| Olivetti, Tiziano | (Thailand) | 28cm Refl. | 3 | images |
| Takimoto, Ikuo | (Kagawa, Japan) | 31cm Refl. | 4 | images |
| Yunoki, Kenkichi | (Osaka, Japan) | 26cm Refl. | 17 | images |
| Yoneyama, Seiichi | (Yokohama, Japan) | 20cm Refl. | 3 | images |
SEBs retrograding spot, which was expected to collide with RS, disappeared before reaching RS. It was estimated from retrograding speed that the spot would reach RS around October 4. But no spot was observed after Sep. 27, when it was at II:94.5 deg. (Miyazaki). As a result, RS remained conspicuous as strongly reddish oval without any influence.
STB dark segment which developed eastward from STrD-1 reached RS in mid-October and extended more. Because this segment was STBn which thickened to the north, Fukui's image on Oct. 24 showed an interesting aspect, as if RS had been skewered. RS appeared to have become thinner and smaller, but it is unknown whether this was an influence of STBn. In Olivetti's image on Oct. 29, thicker segment of STBn terminated at preceding BA, and STB recovered normal state between BA and STrD-1. Therefore, it seemed that the f. end of thicker segment detached from STrD-1 in mid-October. However, STrD-1 was still prominent with dusky shadings in SEBs and STrZ. Probably, activity of SEB Revival was still going on.
(2) Saturn
Saturn was increasing altitude in the morning east sky. This month, we received observations listed below.
| Observer | Location | Telescope | Images/Drawings | |
|---|---|---|---|---|
| Akutsu, Tomio | (Philippines) | 35cm SCT | 1 | image |
| Einaga, Hideo | (Hyogo, Japan) | 30cm Refl. | 10 | images |
| Ikemura, Toshihiko | (Nagoya, Japan) | 31cm Refl. | 1 | image |
| Kumamori, Teruaki | (Osaka, Japan) | 20cm Refl. | 1 | image |
| Takimoto, Ikuo | (Kagawa, Japan) | 31cm Refl. | 1 | image |
| Yoneyama, Seiichi | (Yokohama, Japan) | 20cm Refl. | 5 | images |
No notable feature was observed on Saturn this month. Southern part of EZ was brightest, SEB was double with darker north component, and there was STB in the south. Northern hemisphere was still dim, but color difference with southern hemisphere reduced, since bluish tint diminished. As tilt of the ring decreased, it became difficult to observe Cassini's division in poor condition.
(November 9, K. Horikawa)
(Translated on March 27)
[Fig.1] Skewered RS by thicker STBn and BA |
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