Catalog or Format
| No. Stars
| Bytes
| Region Search
| Image Search
|
| USNO-A2.0 Catalog
| 526,280,881
| 6,315,370,572
| sua2
(scat)
| imua2
(imcat)
|
| GSC II Catalog
| 455,851,237
| ?
| sgsc2
(scat)
| imgsc2
(imcat)
|
| 2MASS Point Source Catalog
| 155,569,249
| 48,988,432,908
| stmc
(scat)
| imtmc
(imcat)
|
| USNO-SA2.0 Catalog
| 55,368,239
| 664,418,868
| susa2
(scat),
|
imusa2
(imcat)
|
| GSC-ACT Catalog
| 25,541,952
| 1,231,787,520
| sgsca
(scat)
| imgsca
(imcat)
|
| HST Guide Star Catalog
| 25,541,952
| 1,231,787,520
| sgsc
(scat)
| imgsc
(imcat)
|
| Tycho-2 Catalog
| 2,539,913
| 528,721,576
| sty2
(scat)
| imty2
(imcat)
|
| USNO/Hipparcos ACT Catalog
| 988,758
| 318,380,076
| sact
(scat)
| imact
(imcat)
|
| PPM Catalog
| 378,910
| 22,734,656
| sppm
(scat)
| imppm
(imcat)
|
| SAO Catalog
| 258,996
| 15,539,876
| ssao
(scat)
| imsao
(imcat)
|
| IRAS Point Source Catalog
| 245,889
| 7,376,698
| siras
(scat)
| imiras
(imcat)
|
| Hipparcos Catalog
| 118218
| 4492312
| ship
(scat)
| imhip
(imcat)
|
| Starbase tab-delimited ASCII
| varies
| varies
| scat
| imcat
|
| Space-Delimited ASCII
| varies
| varies
| scat
| imcat
|
| Local Binary
| varies
| varies
| scat
| imcat
|
| USNO-A1.0 Catalog
| 488,006,860
| 5,856,082,320
| sua1
(scat)
| imua1
(imcat)
|
| USNO-SA1.0 Catalog
| 54,787,624
| 657,451,488
| susa1
(scat)
| imusa1
(imcat)
|
| USNO J-1.0 Catalog
| 19,911,514
| 238,938,168
| sujc
(scat)
| imujc
(imcat)
|