This is an altered version of the Hipparcos catalog inteneded to be easier to use. The original catalog has RA/DEC coordinates for the equinox of 1991.25. Here I have converted the coordinates to J2000 using the NOVAS function "transform_hip". I have also removed many fields which are of little use to amateurs. There are several versions available here, which contain stars down to different magnitude levels. For example Hipparcos_6.js contains all stars with magnitude less than 6. Magnitude 6.5 gets special recognition since it is considered to be the limiting magnitude of human vision. Though sky conditions will affect the actual limit.
| Size (bytes) | Name | Stars |
|---|---|---|
| 41k, 8k | hipparcos_3.js | 173 |
| 125k, 23k | hipparcos_4.js | 516 |
| 390k, 70k | hipparcos_5.js | 1607 |
| 1.2M, 217k | hipparcos_6.js | 4993 |
| 2.1M, 381k | hipparcos_6.5.js | 8786 |
| 3.7M, 666k | hipparcos_7.js | 15398 |
| 9.9M, 1.7M | hipparcos_8.js | 41058 |
| 20M, 3.5M | hipparcos_9.js | 82985 |
| 26M, 4.6M | hipparcos_10.js | 107754 |
| 28M, 4.9M | hipparcos_11.js | 115240 |
| 28M, 5.1M | hipparcos_12.js | 117454 |
| 28M, 5.1M | hipparcos_full.js | 117957 |
The hip2j2000.py script is what was used to do the conversion. You must "pip install novas" before running it.
The concise versions retain the following fields:
| 0 | 1 | 9- 14 | I6 | --- | HIP | Identifier (HIP number) | (H1) |
| 1 | 5 | 42- 46 | F5.2 | mag | Vmag | ? Magnitude in Johnson V | (H5) |
| 2 | 8 | 52- 63 | F12.8 | deg | RAdeg | *? alpha, degrees (ICRS, Epoch=J1991.25) | (H8) |
| 3 | 9 | 65- 76 | F12.8 | deg | DEdeg | *? delta, degrees (ICRS, Epoch=J1991.25) | (H9) |
| 4 | 37 | 246-251 | F6.3 | mag | B-V | ? Johnson B-V colour | (H37) |
Below are the fields retained. You may wish to edit the script to produce files with different fields.:
| 0 | 1 | 9- 14 | I6 | --- | HIP | Identifier (HIP number) | (H1) |
| 1 | 2 | 16 | A1 | --- | Proxy | *[HT] Proximity flag | (H2) |
| 2 | 5 | 42- 46 | F5.2 | mag | Vmag | ? Magnitude in Johnson V | (H5) |
| 3 | 6 | 48 | I1 | --- | VarFlag | *[1,3]? Coarse variability flag | (H6) |
| 4 | 8 | 52- 63 | F12.8 | deg | RAdeg | *? alpha, degrees (ICRS, Epoch=J1991.25) | (H8) |
| 5 | 9 | 65- 76 | F12.8 | deg | DEdeg | *? delta, degrees (ICRS, Epoch=J1991.25) | (H9) |
| 6 | 10 | 78 | A1 | --- | AstroRef | *[*+A-Z] Reference flag for astrometry | (H10) |
| 7 | 11 | 80- 86 | F7.2 | mas | Plx | ? Trigonometric parallax | (H11) |
| 8 | 12 | 88- 95 | F8.2 | mas/yr | pmRA | *? Proper motion mu_alpha.cos(delta), ICRS | (H12) |
| 9 | 13 | 97-104 | F8.2 | mas/yr | pmDE | *? Proper motion mu_delta, ICRS | (H13) |
| 10 | 32 | 218-223 | F6.3 | mag | BTmag | ? Mean BT magnitude | (H32) |
| 11 | 34 | 231-236 | F6.3 | mag | VTmag | ? Mean VT magnitude | (H34) |
| 12 | 36 | 244 | A1 | --- | m_BTmag | *[A-Z*-] Reference flag for BT and VTmag | (H36) |
| 13 | 37 | 246-251 | F6.3 | mag | B-V | ? Johnson B-V colour | (H37) |
| 14 | 44 | 275-281 | F7.4 | mag | Hpmag | *? Median magnitude in Hipparcos system | (H44) |
| 15 | 49 | 302-306 | F5.2 | mag | Hpmax | ? Hpmag at maximum (5th percentile) | (H49) |
| 16 | 50 | 308-312 | F5.2 | mag | HPmin | ? Hpmag at minimum (95th percentile) | (H50) |
| 17 | 51 | 314-320 | F7.2 | d | Period | ? Variability period (days) | (H51) |
| 18 | 52 | 322 | A1 | --- | HvarType | *[CDMPRU]? variability type | (H52) |
| 19 | 55 | 328-337 | A10 | --- | CCDM | CCDM identifier | (H55) |
| 20 | 63 | 356-358 | I3 | deg | theta | ? Position angle between components | (H63) |
| 21 | 64 | 360-366 | F7.3 | arcsec | rho | ? Angular separation between components | (H64) |
| 22 | 66 | 374-378 | F5.2 | mag | dHp | ? Magnitude difference of components | (H66) |
| 23 | 71 | 391-396 | I6 | --- | HD | [1/359083]? HD number <III/135> | (H71) |
| 24 | 72 | 398-407 | A10 | --- | BD | Bonner DM <I/119>, <I/122> | (H72) |
| 25 | 73 | 409-418 | A10 | --- | CoD | Cordoba Durchmusterung (DM) <I/114> | (H73) |
| 26 | 74 | 420-429 | A10 | --- | CPD | Cape Photographic DM <I/108> | (H74) |