{
  "id": 597953,
  "title": "Mismatched transits from batman and train_star_info.csv",
  "url": "/competitions/ariel-data-challenge-2025/discussion/597953",
  "author_name": "snehal",
  "post_date": "2025-08-08T02:35:35.890000",
  "votes": 2,
  "comment_count": 1,
  "views": 0,
  "content": "<p>When i try using the parameters given in train_star_info.csv to generate a curve with batman (<a href=\"https://lkreidberg.github.io/batman/docs/html/index.html)\" target=\"_blank\">https://lkreidberg.github.io/batman/docs/html/index.html)</a>, the geometries don't match at all. t0, r_p, and limb darkening coefficients must be fitted I understand, but the transit times/transit shapes are generally wider than what the actual curve is. Anyone else experiencing this?</p>",
  "messages": [
    {
      "id": 3266240,
      "postDate": "2025-08-08T16:40:28.523Z",
      "content": "<p>They said they added noise to the star_info data, so it won't match exactly.  I find that the transit times are in the ballpark of the calculated values from star_info (better than a factor of 2).  Except for the Mp, see <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2025/discussion/588518#3264741\" target=\"_blank\">here</a></p>",
      "rawMarkdown": "They said they added noise to the star_info data, so it won't match exactly.  I find that the transit times are in the ballpark of the calculated values from star_info (better than a factor of 2).  Except for the Mp, see [here](https://www.kaggle.com/competitions/ariel-data-challenge-2025/discussion/588518#3264741)",
      "votes": 2
    },
    {
      "id": 3265829,
      "postDate": "2025-08-08T02:35:35.890Z",
      "content": "<p>When i try using the parameters given in train_star_info.csv to generate a curve with batman (<a href=\"https://lkreidberg.github.io/batman/docs/html/index.html)\" target=\"_blank\">https://lkreidberg.github.io/batman/docs/html/index.html)</a>, the geometries don't match at all. t0, r_p, and limb darkening coefficients must be fitted I understand, but the transit times/transit shapes are generally wider than what the actual curve is. Anyone else experiencing this?</p>",
      "rawMarkdown": "When i try using the parameters given in train_star_info.csv to generate a curve with batman (https://lkreidberg.github.io/batman/docs/html/index.html), the geometries don't match at all. t0, r_p, and limb darkening coefficients must be fitted I understand, but the transit times/transit shapes are generally wider than what the actual curve is. Anyone else experiencing this?",
      "votes": 2
    }
  ],
  "comments": [
    {
      "id": 3266240,
      "author_name": "SolverWorld",
      "author_url": "",
      "post_date": "2025-08-08T16:40:28.523000",
      "content": "<p>They said they added noise to the star_info data, so it won't match exactly.  I find that the transit times are in the ballpark of the calculated values from star_info (better than a factor of 2).  Except for the Mp, see <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2025/discussion/588518#3264741\" target=\"_blank\">here</a></p>",
      "votes": 2,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "3266240": "They said they added noise to the star_info data, so it won't match exactly.  I find that the transit times are in the ballpark of the calculated values from star_info (better than a factor of 2).  Except for the Mp, see [here](https://www.kaggle.com/competitions/ariel-data-challenge-2025/discussion/588518#3264741)",
    "3265829": "When i try using the parameters given in train_star_info.csv to generate a curve with batman (https://lkreidberg.github.io/batman/docs/html/index.html), the geometries don't match at all. t0, r_p, and limb darkening coefficients must be fitted I understand, but the transit times/transit shapes are generally wider than what the actual curve is. Anyone else experiencing this?"
  }
}