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Special Annoucements

Download and review the latest ALCDEF standards PDF.

The ALCDEF site has been moved to a new hosting service that allows for more than enough storage space and faster access.
For the time being, use https://minplanobs.org/alcdef to access the new host. The original URL, alcdef.org, will redirect to the new host. Eventually, the alcdef.org URL will go to the new site and also be secure (https)

The EPOCH keyword is being deprecated and replaced by EQUINOX. Existing programs that generate EPOCH will still work as will upload files using EPOCH. If using a custom program to read/write ALCDEF files, it should be updated to use EQUINOX.
As of 2021 July 2, downloaded lightcurve files will use the EQUINOX keyword.

Statistics and Search


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Last update: 2021-09-22 13:44:32

Object Search

Required "Opt-in" and File Upload

You must give express permission before your data can be stored and distributed. Without this permission, your data will not be accepted by the ALCDEF site. You must also choose whether or not your data will be automatically made part of a periodic release from the NASA Planetary Data System.

For more information, see the Data and Privacy Policy statement and the ALCDEF documentation.

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ALCDEFVerify

ALCDEFVerify is a web-based tool that runs the same verification checks used when uploading files to the ALCDEF database. It was developed for those writing third-party programs or scripts to debug and validate their data prior to uploading the files to the ALCDEF database.

Up to three files can be processed during each run.
It is strongly recommended that each file be < 1 MB.

Defined Constant Keywords
(see section 3 of ALCDEF standards documentation)

Simple ALCDEF (S-ALCDEF)

S-ALCDEF is for those who have basic text data files, e.g., JD, magnitude[, magerror]. Usually with a minimal amount of editing, these files can be uploaded to the ALCDEF database without creating the more detailed and rigorous standard ALCDEF files.

See the ALCDEF documentation for details
Click here to go to the S-ALCDEF upload page

N.B. If using Gaia G magnitudes, you must set MAGBAND=GG (Gaia G). The single-letter 'G' can be confused with the Sloan g magband. There is no 'G' filter, so use FILTER=X, where X is one of the accepted filters.

Archive Download

Full Download

Custom Download

Download Notes

Latest ZIP with all ALCDEF data
Created: 2021 June 02 @ 02:01:28
Size: 114,645 KB

On/After  
yyyy-mm-dd or yyyymmdd

  

If successful, a ZIP file is created that contains only those lightcurve blocks that were added or edited on/after the date given above and a download link appears above the Sumbit button.

Due to the heavy load required to generate the ZIP, custom downloads are limited to no more than the last 90 days.

Do not press any buttons or leave the page while waiting for the file to be generated.

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