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伊豆の美術解剖学者 engagement report

@kato_anatomy - 436K followers on X

Measured over 37 original posts from a 30-day window, last computed on August 30, 2026.

Engagement

Middle of its size range
Per follower
0.037%
of 436K followers
Per impression
0.577%
28K views on a typical post
Reach
6.48%
of its followers see a post
Typical post
163
interactions (median)
Saved
0.191%
54 bookmarks on a typical post
Posting rate
1.97/day
active 60% of days
Peak time
12:00 UTC
Saturday

A typical post picks up 163 interactions against 436K followers, an engagement rate of 0.037%. Measured over 37 original posts, its engagement rate beats 51% of 3,848 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 28K times each, and 0.577% of those impressions turn into an interaction. That is about 6.49% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2 posts a day over the last 30 days, with activity on roughly 60% of days. Most posts go out around 12:00 UTC, and Saturday is the busiest day of the week. Of the 37 posts sampled, 100% carry an image or video and 8% link out. The account's strongest tracked post pulled 2.8K interactions, about 17x its own typical post.

Measured over 37 original posts from a 30-day window, last computed on August 30, 2026. Recurring tag: #伊豆の美術解剖学者.

Compared with accounts its own size

伊豆の美術解剖学者's engagement rate beats 51% of the tracked X accounts closest to it in follower count (3,848 accounts, accounts of similar size (decile 7 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.

On engagement per impression rather than per follower it beats 37% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.

Where this sits in the catalog

At 0.037%, 伊豆の美術解剖学者 sits above the 25th percentile of the 37,320 accounts in this comparison. That places it in the below the median band, which runs 0.012% to 0.081%.

p100.002%
p250.012%
p50 (median)0.081%
p750.436%
p902.10%
p99160.1%
Engagement rate as a share of followers, across the 37,320 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 106,750 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.002%
25th percentile0.012%
50th percentile0.081%
75th percentile0.436%
90th percentile2.10%
99th percentile160.1%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 12:00 UTC, and Saturday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 12:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 6%Busiest hour: 12:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%52K
01:00 UTC-2%53K
02:00 UTC-3%51K
03:00 UTC-4%55K
04:00 UTC-6%44K
05:00 UTC-4%43K
06:00 UTC-4%49K
07:00 UTC-5%53K
08:00 UTC-4%62K
09:00 UTC-3%71K
10:00 UTC-2%74K
11:00 UTC-3%80K
12:00 UTC-2%88K
13:00 UTC-2%97K
14:00 UTC-4%100K
15:00 UTC-2%103K
16:00 UTC-3%100K
17:00 UTC-3%93K
18:00 UTC-2%87K
19:00 UTC-2%82K
20:00 UTC-1%76K
21:00 UTC-1%67K
22:00 UTC-1%58K
23:00 UTC-1%52K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Saturday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 5%Busiest day: Saturday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%235K
Monday0%296K
Tuesday-3%292K
Wednesday-1%254K
Thursday-2%248K
Friday-3%256K
Saturday+3%230K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Best tweets

  • Aug 29, 202617x their median

    肩から肘の筋の講義資料 https://t.co/jqcNMHVaHU

    2.5K2991368K viewsView on X
  • Aug 16, 202615x their median

    本日の戦利品:めばえあにめさんの同人誌。解剖用語の略称が使われているのを見かけて一括購入。 https://t.co/wL7tN4kl5y

    2.3K10411201K viewsView on X
  • Aug 29, 202611x their median

    肘から先の骨の講義資料 https://t.co/3dYRBPIfUQ

    1.6K1630548K viewsView on X
  • Aug 18, 20266.8x their median

    「皮膚」を油彩で描く。写真的な再現にとどまらず、被写体に独自の質感と深遠な概念的深みを吹き込んだ絵画。透明な絵の具を薄く溶いて乾いた下層の上から塗り重ねるグレーズ技法で細密に描き、その後サンドペーパーなどの道具を使ってそれを剥ぎ取るという制作過程を経ることで、実際の皮膚の物理的構造を模倣している。 ドイツ出身のアーティスト、ルーカス・ルツィウス・ライヒトレの作品。

    1.0K9266112K viewsView on X
  • Apr 18, 20256.5x their median

    ボーンデジタルさんから『見る・知る・描くの美術解剖学ドリル 骨・男性編』の見本が届きました。4/28に発売です。どうぞよろしくお願いします。 https://t.co/UbrpcgEwy8

    854188212506K viewsView on X
  • Aug 18, 20265.3x their median

    先日、骨っぽい造形があるぞと思って、GOLEM展に行ってきました。 https://t.co/KZHsi8i43H

    797600151K viewsView on X
  • Aug 22, 20264.3x their median

    通販でお取り寄せしたC108同人誌。 左の下半身解説本では、美術解剖学本にない会陰の解説が載っています。 右のウマ娘本はトレーニングのポーズをしたイラストが載ってます。 https://t.co/nskKRO7HWF

    649461153K viewsView on X
  • Aug 28, 20262.9x their median

    『アクションポーズの美術解剖学』の中身16。やられたときのポーズもお願いしました。 https://t.co/H6iyF2jBWk

    429420133K viewsView on X
  • Aug 29, 20262.7x their median

    X君の検閲?で投稿できなかったので再投稿 https://t.co/oop2r1Hm65

    392500019K viewsView on X
  • Aug 6, 20262.4x their median

    夏コミの新刊届きました。天心流のまーこ先生にモデルをしていただきました。前半は色分け図、後半は筋肉図になっています。 https://t.co/PrnTExZRmI

    3196007132K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

Recurring topics

#伊豆の美術解剖学者

The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.

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Reading these numbers

A typical post picks up 163 interactions against 436K followers, an engagement rate of 0.037%. Measured over 37 original posts, its engagement rate beats 51% of 3,848 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 28K times each, and 0.577% of those impressions turn into an interaction. That is about 6.49% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2 posts a day over the last 30 days, with activity on roughly 60% of days. Most posts go out around 12:00 UTC, and Saturday is the busiest day of the week. Of the 37 posts sampled, 100% carry an image or video and 8% link out. The account's strongest tracked post pulled 2.8K interactions, about 17x its own typical post.

What is 伊豆の美術解剖学者's engagement rate on X?
伊豆の美術解剖学者 (@kato_anatomy) has an engagement rate of 0.037%, based on the median interactions across 37 original posts from the last 30 days against 435,608 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.037%, 伊豆の美術解剖学者 sits above the 25th percentile of the 37,320 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @kato_anatomy have real engagement?
Its engagement rate beats 51% of the tracked X accounts closest to it in follower count (3,848 accounts), which puts it in the middle of its size range group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
When does @kato_anatomy post?
Most posts go out around 12:00 UTC, and Saturday is its busiest day, at roughly 1.97 posts per day across the measured window.

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