Captain Mark Kelly engagement report
@CaptMarkKelly - 526K followers on X
Measured over 42 original posts from a 30-day window, last computed on October 16, 2026.
Engagement
A typical post picks up 968 interactions against 526K followers, an engagement rate of 0.184%. Measured over 42 original posts, its engagement rate beats 80% of 20,444 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 17K times each, and 5.81% of those impressions turn into an interaction. That is about 3.17% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.1 posts a day over the last 30 days, with activity on almost every day in the window. Most posts go out around 18:00 UTC, and Monday is the busiest day of the week. Of the 42 posts sampled, 74% carry an image or video, 10% are part of a thread and 12% link out. The account's strongest tracked post pulled 167K interactions, about 173x its own typical post. Recurring topics include #nv02, #va05.
Measured over 42 original posts from a 30-day window, last computed on October 16, 2026. Recurring tags: #nv02, #va05.
Compared with accounts its own size
Captain Mark Kelly's engagement rate beats 80% of the tracked X accounts closest to it in follower count (20,444 accounts, accounts of similar size (decile 10 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 92% 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 0.184%, Captain Mark Kelly sits above the 50th percentile of the 204,956 accounts in this comparison. That places it in the above the median band, which runs 0.143% to 0.678%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.678% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
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 18:00 UTC, and Monday 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.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 74% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 12% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 74% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 12% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
- Its average post runs 238 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Nov 12, 2022173x their median
Thank you, Arizona. https://t.co/MKmCOGqsZx
- Aug 12, 202656x their median
The White House decided there was a threat so great that Donald Trump was secretly moved to another plane but they never told the passengers on Air Force One. Cowards look out for themselves. Leaders look out for their people. https://t.co/BcIYJEkrXb
- Aug 26, 202628x their median
Welcome to the world, Sloan! My second granddaughter was born this weekend and our family couldn’t be happier. https://t.co/tVz19FtGjo
- Aug 4, 202621x their median
Donald Trump and Pete Hegseth have completely botched this war. Yesterday, Trump said that Phase 1 is to open the Strait of Hormuz. His goal is now to fix the thing he broke. And the only thing the American people have to show for it is higher prices. https://t.co/WJtMJlTbVO
- Aug 14, 202621x their median
I spoke to a grandmother today worried about her 21-year-old grandson who's aboard the USS Abraham Lincoln. He’s lost 20-25 pounds and is struggling with depression. And so-called leaders like Pete Hegseth aren’t doing a thing about it. https://t.co/sueDJajmPV
- Aug 16, 202621x their median
North and South Korea are still technically at war. Our ability to help defend our ally against the North Koreans is because our forces are well trained and able to coordinate with the South Koreans. Hollowing out these joint exercises is shortsighted and a mistake. https://t.co/VLO3t7Ghbf
- Sep 3, 202616x their median
It’s now been 3 years since Nelson passed away. He was @GabbyGiffords’ service dog after her injury and a member of our family for over 10 years. We still miss him every day. https://t.co/l16abSNcnu
- Aug 19, 202614x their median
The President said he’d pay off the debt in his first term. Well we all knew that was a lie. Instead he ran it up to $40 trillion while he and his family made billions. https://t.co/iy46BCgs0V
- Oct 12, 202613x their median
Any single individual having this amount of influence in our elections does not lead to a healthy democracy. It doesn’t matter if they are supporting Democrats or Republicans. We need a serious effort at campaign finance reform and have to overturn the Citizens United decision. https://t.co/QxWpI2zrXE
- Aug 29, 202611x their median
Thinking of John McCain today on what would’ve been his 90th birthday. As a Senator, John never stopped fighting for what he believed was right for Arizona, even when it meant standing alone. He dedicated his life to our country, and his legacy of service will never be forgotten. https://t.co/DODQsmKW5K
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
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 968 interactions against 526K followers, an engagement rate of 0.184%. Measured over 42 original posts, its engagement rate beats 80% of 20,444 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 17K times each, and 5.81% of those impressions turn into an interaction. That is about 3.17% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.1 posts a day over the last 30 days, with activity on almost every day in the window. Most posts go out around 18:00 UTC, and Monday is the busiest day of the week. Of the 42 posts sampled, 74% carry an image or video, 10% are part of a thread and 12% link out. The account's strongest tracked post pulled 167K interactions, about 173x its own typical post. Recurring topics include #nv02, #va05.
- What is Captain Mark Kelly's engagement rate on X?
- Captain Mark Kelly (@CaptMarkKelly) has an engagement rate of 0.184%, based on the median interactions across 42 original posts from the last 30 days against 526,288 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.184%, Captain Mark Kelly sits above the 50th percentile of the 204,956 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 @CaptMarkKelly have real engagement?
- Its engagement rate beats 80% of the tracked X accounts closest to it in follower count (20,444 accounts), which puts it in the top quarter for its size 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 @CaptMarkKelly post?
- Most posts go out around 18:00 UTC, and Monday is its busiest day, at roughly 2.1 posts per day across the measured window.