Table Description:
Per-band photometric statistics for each object including mean, median, minimum, maximum magnitudes, standard deviation, first/last magnitudes, rate of change, and corrected values accounting for host galaxy flux.
This table is available for ADQL queries and through the TAP endpoint.
Resource Description:
Multi-survey astronomical object catalog containing astrometric and statistical information from multiple surveys. This table provides aggregated properties for astronomical objects including position, detection statistics, and temporal coverage.
For a list of all services and tables belonging to this table's resource, see Information on resource 'ALeRCE Multi-Survey Object Catalog'
To cite the table as such, we suggest the following BibTeX entry:
@MISC{vo:alerce_tap_magst,
year=2026,
title={Magnitude Statistics},
author={{ALeRCE} Team},
url={http://tap.alerce.online/tableinfo/alerce_tap.magstat},
howpublished={{VO} resource provided by the {ALeRCE} {TAP} service}
}
Sorted alphabetically. [Sort by DB column index]
| Name | Table Head | Description | Unit | UCD |
|---|---|---|---|---|
| band | Band | Photometric band | N/A | instr.bandpass |
| corrected | Corrected | Correction applied flag | N/A | meta.code.qual |
| dm_first | Dm_first | First magnitude difference | mag | phot.mag;arith.diff |
| dmdt_first | Dmdt_first | First magnitude rate of change | mag/d | arith.rate;phot.mag |
| dt_first | Dt_first | First time interval | d | time.interval |
| firstmjd | Firstmjd | First observation MJD | d | time.start |
| lastmjd | Lastmjd | Last observation MJD | d | time.end |
| magfirst | Magfirst | First magnitude | mag | phot.mag |
| magfirst_corr | Magfirst_corr | Corrected first magnitude | mag | phot.mag;arith.corrected |
| maglast | Maglast | Last magnitude | mag | phot.mag |
| maglast_corr | Maglast_corr | Corrected last magnitude | mag | phot.mag;arith.corrected |
| magmax | Magmax | Maximum magnitude | mag | phot.mag;stat.max |
| magmax_corr | Magmax_corr | Corrected maximum magnitude | mag | phot.mag;stat.max;arith.corrected |
| magmean | Magmean | Mean magnitude | mag | phot.mag;stat.mean |
| magmean_corr | Magmean_corr | Corrected mean magnitude | mag | phot.mag;stat.mean;arith.corrected |
| magmedian | Magmedian | Median magnitude | mag | phot.mag;stat.median |
| magmedian_corr | Magmedian_corr | Corrected median magnitude | mag | phot.mag;stat.median;arith.corrected |
| magmin | Magmin | Minimum magnitude | mag | phot.mag;stat.min |
| magmin_corr | Magmin_corr | Corrected minimum magnitude | mag | phot.mag;stat.min;arith.corrected |
| magsigma | Magsigma | Magnitude standard deviation | mag | stat.stdev;phot.mag |
| magsigma_corr | Magsigma_corr | Corrected magnitude standard deviation | mag | stat.stdev;phot.mag;arith.corrected |
| n_det | N_det | Number of detections | N/A | meta.number |
| ndubious | Ndubious | Number of dubious measurements | N/A | meta.number |
| oid | Oid | Object identifier | N/A | meta.id;src |
| saturation_rate | Saturation_rate | Saturation rate | N/A | arith.rate |
| sid | Sid | Survey identifier | N/A | meta.id |
| sigmadm_first | Sigmadm_first | First magnitude difference error | mag | stat.error;phot.mag |
| stellar | Stellar | Stellar classification flag | N/A | src.class.starGalaxy |
| step_id_corr | Step_id_corr | Correction step identifier | N/A | meta.id |
| updated_date | Updated_date | Date record was last updated | N/A | time.processing |
Columns that are parts of indices are marked like this.
VO nerds may sometimes need VOResource XML for this table.