Large Sky Area Multi-Object Fiber Spectroscopic Telescope
DATA RELEASE 10 v1.0
2011.10.24-2022.06.30
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Low Resolution

Observed Plates： 5923
Total Spectra： 11,817,430
Star： 11,473,644
Galaxy： 263,444
QSO： 80,342
AFGK Stellar Parameters： 7,478,650
M Giants,Dwarfs and Subdwarfs： 876,134
Line indices of A Type Stars:680,989
WD Star Catalog:17,140
CV Star Catalog:556
Galaxy Population Synthesis Catalog:27,333
Qso Emission line Feature Catalog:18,706
Observed
Plates		 Total Spectra Star Galaxy QSO AFGK Stellar
Parameters		 M Giants,Dwarfs
and Subdwarfs		 Line indices of
A Type Stars		 WD Star
Catalog		 CV Star
Catalog		 Galaxy Population
Synthesis Catalog		 Qso Emission line
Feature Catalog
Pilot survey
(20111024-20120617)
 404 880,047 869,203 9297 1547 417,753 84,828 65,402 1546 34 12 693
First year survey
(20120928-20130603)
 812 1,606,077 1,585,991 13,821 6265 934,247 66,680 79,965 1468 61 159 2327
Second year survey
(20130910-20140603)
 732 1,576,036 1,537,704 31,860 6472 1,125,839 80,921 77,458 1305 50 2438 2827
Third year survey
(20140910-20150530)
 738 1,618,622 1,581,233 27,414 9975 1,103,981 108,550 88,596 1829 57 2579 2306
Forth year survey
(20150912-20160602)
 776 1,644,240 1,587,582 41,558 15,100 1,100,576 106,724 103,109 2342 94 4434 2075
Fifth year survey
(20160909-20170616)
 693 1,319,379 1,267,104 36,984 15,291 790,723 103,561 89,972 2701 71 5075 5173
Sixth year survey
(20170919-20180518)
 418 834,593 806,115 20,660 7818 513,531 76,123 52,090 1743 60 2,653 1,209
Seventh year survey
(20181005-20190608)
 349 625,557 599,610 21,752 4195 371,105 68,797 41,164 1,579 27 2,418 473
Eighth year survey
(20191023-20200527)
 285 529,204 502,499 21,314 5391 326,903 59,648 27,720 1087 39 1951 741
Ninth year survey
(20200918-20210612)
 326 577,266 556,306 16,794 4166 376,019 62,181 29,487 765 31 2049 498
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Medium Resolution

Medium-resolution non time-domain data Medium-resolution time-domain data Total
Total spectra 2,211,338 8,274,878 10,486,216
Star parameter 1,103,320 1,045,150 2,148,470

Standard acknowledgement

Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences. Funding for the project has been provided by the National Development and Reform Commission. LAMOST is operated and managed by the National Astronomical Observatories, Chinese Academy of Sciences.