Surveys · 5 of 6

ASAS-3ACVS

Ground-based, band V. Detections from 2000-11-20 to 2008-04-19.

https://www.astrouw.edu.pl/asas/ · final: no new data will come

epochs held

27.6 million

24.3 million of them detections

stars with a light curve

50,475

50,475 with ≥ 1 detection

median epochs per star

510

all bands

sky with light curves

44.9%

HEALPix order-6 cells, as mapped

Where its stars are

Footprint

Brightness is stars per cell with a light curve from ASAS-3 (HEALPix order 6, log scale), over the whole archive in gray. Galactic Mollweide, Galactic center in the middle, east left, 30° graticule. It shows where the archive holds light curves, not the survey's full footprint.

native → BJD_TDB

Time system

native column: hjd
time scale: UTC
reference frame: heliocentric
origin: JD − 2450000
reference position: source
archive time axis: BJD_TDB (bjd_tdb)

Converted to BJD_TDB by removing the heliocentric correction and applying the barycentric one. The native hjd is also served.

Bands

band	λ_eff	saturation	collection	stars with a light curve	epochs	detections	era
ASAS-3 Vasas3:V	551 nm	7 mag	curves_static	50,475	27,558,210	24,260,975	2000-11-20 → 2008-04-19

quality rules

Epoch selection

good epochs: grade A, B or C
detections: every good epoch (no limiting magnitude is published)
non-detections: not reported

Alias frequencies

|f ± k·f_sid| (k=1,2), |f ± 1/365.25|, window at 365.25 / 182.63 / 29.53 d

linking

Crossmatch to VSX

Measured radius 10″, 1.43% chance matches.

ASAS-3 publishes ACVS catalog positions, not its own centroids. Name and position are independent, so agreement between them verifies a link.

ID column: asas3_id
catalog epoch: J2003

ASAS names encode rounded coordinates; the catalog is final, so they do not change.

LSDB

Bulk access

Light curves are in the nested lc_asas3 column of curves_static.

PythonASAS-3 light curves around a position

# read the release directly over HTTPS
import json, lsdb
from upath import UPath

root = UPath("https://data.varchive.app")
ptr = json.loads((root / "catalogs/latest.json").read_text())
RA, DEC = 0.0, 0.0   # your field center, degrees

# curves_static: ASAS-3 V
static = lsdb.read_hats(root / ptr["collections"]["curves_static"]["path"],
                        columns=["varchive_id", "ra", "dec", "lc_asas3"])
df = static.cone_search(RA, DEC, 600).compute()   # radius in arcsec
lc = df["lc_asas3"].iloc[0]   # band, bjd_tdb, mag, mag_err, detected, hjd, frame, dataset_block, grade, aperture
v = lc[lc["band"] == "V"]   # one band at a time

# never concatenate across bands or surveys; bjd_tdb is the time axis for science

Citation

Pojmanski 1997, AcA 47, 467 The All Sky Automated Survey
Pojmanski 2002, AcA 52, 397 The All Sky Automated Survey. Catalog of Variable Stars. I. 0 h - 6 hQuarter of the Southern Hemisphere
Pojmanski 2003, AcA 53, 341 The All Sky Automated Survey. The Catalog of Variable Stars. II. 6h-12h Quarter of the Southern Hemisphere
Pojmanski & Maciejewski 2004, AcA 54, 153 The All Sky Automated Survey. Catalog of Variable Stars. III. 12h-18h Quarter of the Southern Hemisphere
Pojmanski & Maciejewski 2005, AcA 55, 97 The All Sky Automated Survey. Catalog of Variable Stars. IV. 18h-24h Quarter of the Southern Hemisphere
Pojmanski et al. 2005, AcA 55, 275 The All Sky Automated Survey. Catalog of Variable Stars. V. Declinations 0° - +28° of the Northern Hemisphere

This work uses data from the All Sky Automated Survey (ASAS-3).

BibTeX · 6 entries from NASA ADS

@ARTICLE{1997AcA....47..467P,
       author = {{Pojmanski}, G.},
        title = "{The All Sky Automated Survey}",
      journal = {\actaa},
     keywords = {SURVEYS, TELESCOPES, TECHNIQUES: PHOTOMETRIC, Astrophysics},
         year = 1997,
        month = oct,
       volume = {47},
        pages = {467-481},
          doi = {10.48550/arXiv.astro-ph/9712146},
archivePrefix = {arXiv},
       eprint = {astro-ph/9712146},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997AcA....47..467P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2002AcA....52..397P,
       author = {{Pojmanski}, G.},
        title = "{The All Sky Automated Survey. Catalog of Variable Stars.  I. 0 h - 6 hQuarter of the Southern Hemisphere}",
      journal = {\actaa},
     keywords = {Catalogs, Stars: variables: general, Surveys, Astrophysics},
         year = 2002,
        month = dec,
       volume = {52},
        pages = {397-427},
          doi = {10.48550/arXiv.astro-ph/0210283},
archivePrefix = {arXiv},
       eprint = {astro-ph/0210283},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002AcA....52..397P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003AcA....53..341P,
       author = {{Pojmanski}, G.},
        title = "{The All Sky Automated Survey. The Catalog of Variable Stars. II. 6\^h-12\^h Quarter of the Southern Hemisphere}",
      journal = {\actaa},
     keywords = {Catalogs, Stars: variables: general, Surveys},
         year = 2003,
        month = dec,
       volume = {53},
        pages = {341-369},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003AcA....53..341P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2004AcA....54..153P,
       author = {{Pojmanski}, G. and {Maciejewski}, G.},
        title = "{The All Sky Automated Survey. Catalog of Variable Stars. III. 12h-18h Quarter of the Southern Hemisphere}",
      journal = {\actaa},
     keywords = {Catalogs, Stars: variables: general, Surveys, Astrophysics},
         year = 2004,
        month = jun,
       volume = {54},
        pages = {153-179},
          doi = {10.48550/arXiv.astro-ph/0406256},
archivePrefix = {arXiv},
       eprint = {astro-ph/0406256},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004AcA....54..153P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2005AcA....55...97P,
       author = {{Pojmanski}, G. and {Maciejewski}, G.},
        title = "{The All Sky Automated Survey. Catalog of Variable Stars. IV. 18\^h-24\^h Quarter of the Southern Hemisphere}",
      journal = {\actaa},
     keywords = {Catalogs, Stars: variables: general, Surveys, Astrophysics},
         year = 2005,
        month = mar,
       volume = {55},
        pages = {97-122},
          doi = {10.48550/arXiv.astro-ph/0412645},
archivePrefix = {arXiv},
       eprint = {astro-ph/0412645},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005AcA....55...97P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2005AcA....55..275P,
       author = {{Pojmanski}, G. and {Pilecki}, B. and {Szczygiel}, D.},
        title = "{The All Sky Automated Survey. Catalog of Variable Stars. V. Declinations 0 arcd - +28 arcd of the Northern Hemisphere}",
      journal = {\actaa},
     keywords = {Catalogs, Stars: variables: general, Surveys, Astrophysics},
         year = 2005,
        month = sep,
       volume = {55},
        pages = {275-301},
          doi = {10.48550/arXiv.astro-ph/0508017},
archivePrefix = {arXiv},
       eprint = {astro-ph/0508017},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005AcA....55..275P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

Also cite AAVSO VSX and Gaia.

license: public
data: https://www.astrouw.edu.pl/asas/
release: ACVS