LAMOST Data Release 12 v1.1
Publish Time:2025-09-26 
LAMOST Data Release 12 v1.1 contains LAMOST medium/low resolution observations of the sky and catalog information from October 24, 2011 to June 3, 2024. A total of 6602 plates were observed during the low resolution sky survey, and 12,605,485 spectra were obtained, including 12,236,412 stellar spectra,  279,836 galactic spectra, and  89,237 quasar spectra; It contains 8,377,811 records of atmospheric parameter information for A/F/G/K stars,  986,068 records of M-type stars and their parameter information, 734,731 records of A-type star parameter information, 18,293 of white dwarf star information, 624 of cataclysmic variable stars, 28896 of galaxy constellation synthesis information, and 2,332 of quasar characteristic emission line information. A total of 15,471,948 spectra in 2,892 plates were obtained through mid-resolution sky surveys, including 3,361,604 non time domain spectra and 12,110,344 time domain spectra. Medium resolution star parameter catalog information 3,224,926 rows in total, including 1,640,359 rows for non-time domain observations and 1,584,567 rows for time-domain observations.
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Data Website
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♦Introduction♦
Keywords
LAMOST , Spectrum , Catalog
Data Volume
49131864 rows 4.21 TB
Sharing Method
online
Sharing Scope
Share with conditions
DOI
CSTR
VO Identifier
ivo://China-VO/data/LAMOST/DR12/V1.1/
♦Sub-datasets and Tables♦
♦Contact Author♦
Author
LAMOST Operation and Development Center
Email
support(at)lamost.org
♦Contact Publisher ♦
Email
support(at)china-vo.org
Phone
+86-10-64807973
Institution
National Astronomical Data Center
♦Tags♦
waveband
Optical
telescope or project
Large Sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST）
subject
Cosmology and Galaxies
Star and Interstellar Matter
data type
Spectrum Data
Catalog Data
production age
1980-
content level
Research