This file contains information from the Hipparcos D.1 catalogue, [83], for the stars used as ISO guide stars. It is not a full extract of the Hipparcos catalogue, but a subset. Users are recommended to refer to the Hipparcos catalogue for further information on the contents of this file. It was used in some detailed pointing corrections and was not designed to be of use to the general observer.
The HIPPARCHOS file contains a primary header with the fields described in Table D.26. In this example non-mandatory fields are filled with example values.
| Keyword | Value | Description |
| SIMPLE = | T | / |
| BITPIX = | 8 | / |
| NAXIS = | 0 | / |
| EXTEND = | T | / |
| ORIGIN = | 'ESA ' | / European Space Agency |
| TELESCOP = | 'ISO ' | / Infrared Space Observatory |
| COMMENT | ISO guide-star Hipparcos catalogue data | |
| FILENAME = | 'HIPPARCHOS' | / File name in ISO archive |
| DATE = | '09/07/95' | / Creation date |
| FILEVERS = | '0298 ' | / Version ID in ISO archive |
| OLPVERS = | 'OLP_21 ' | / SOC OLP system version |
| CALGVERS = | 'CALG_31 ' | / SOC OLP CAL-G files version |
| USERNAME = | 'PIPELINE' | / |
| CREATOR | 'OLP_CREATE v1.0' | / Task which created the file |
| CALIBRAT = | 'CAL-G v5.6' | / Calibration Data release |
| TIME = | '22:45:59' | / Time of file creation (hh:mm:ss) |
| DATE-OLD = | '1999-08-16' | / Date of original creation by IDT |
The HIPPARCHOS file contains records described in Table D.27.
| Keyword | Number | Format | Description | |
| H1 | 1 | I4 | Identifier (HIP number) | |
| H3 | 1 | A12 | Identifier RA (J1991.25), as `h m s' | |
| H4 | 1 | A12 | Identifier Dec (J1991.25), as `d m s' | |
| H5 | 1 | R4 | Johnson V magnitude, in magnitudes | |
| H8 | 1 | R8 | alpha (J1991.25), in degrees | |
| H9 | 1 | R8 | delta (J1991.25), in degrees | |
| H11 | 1 | R8 | Trigonometric parallax, in mas | |
| H12 | 1 | R8 | mu_alpha*, in mas/year | |
| H13 | 1 | R8 | mu_delta, in mas/year | |
| H14 | 1 | R8 | Standard error in alpha (J1991.25), in mas | |
| H15 | 1 | R8 | Standard error in delta (J1991.25), in mas | |
| H16 | 1 | R8 | Standard error in pi, in mas | |
| H17 | 1 | R8 | Standard error in mu_alpha*, in mas/year | |
| H18 | 1 | R8 | Standard error in mu_delta, in mas/year | |
| H19 | 1 | R4 | Correlation: alpha*/delta | |
| H20 | 1 | R4 | Correlation: alpha*/pi | |
| H21 | 1 | R4 | Correlation: delta/pi | |
| H22 | 1 | R4 | Correlation: alpha*/mu_alpha* | |
| H23 | 1 | R4 | Correlation: delta/mu_alpha* | |
| H24 | 1 | R4 | Correlation: pi/mu_alpha* | |
| H25 | 1 | R4 | Correlation: alpha*/mu_delta | |
| H26 | 1 | R4 | Correlation: delta/mu_delta | |
| H27 | 1 | R4 | Correlation: pi/mu_delta | |
| H28 | 1 | R4 | Correlation: mu_alpha*/mu_delta | |
| H29 | 1 | I4 | Data points rejected, in percent | |
| H30 | 1 | R4 | F2 (goodness-of-fit) | |
| H31 | 1 | I4 | HIP number | |
| H32 | 1 | R4 | BT, in magnitudes | |
| H33 | 1 | R4 | sigma(BT), in magnitudes | |
| H34 | 1 | R4 | VT, in magnitudes | |
| H35 | 1 | R4 | sigma(VT), in magnitudes | |
| H37 | 1 | R4 | B V, in magnitudes |
|
| H38 | 1 | R4 | sigma(BV), in magnitudes |
|
| H40 | 1 | R4 | VI, in magnitudes |
|
| H41 | 1 | R4 | sigma(VI), in magnitudes |
|
| H44 | 1 | R4 | median(Hp), in magnitudes | |
| H45 | 1 | R4 | sigma(Hp), in magnitudes | |
| H46 | 1 | R4 | Scatter, in magnitudes | |
| H47 | 1 | I4 | Number of accepted transits | |
| H49 | 1 | R4 | Magnitude at maximum Hp (5th percentile), in magnitudes | |
| H50 | 1 | R4 | Magnitude at minimum Hp (95th percentile), in magnitudes | |
| H51 | 1 | R4 | Period, in days | |
| H63 | 1 | I4 | Position angle, in degrees | |
| H64 | 1 | R4 | Angular separation, in arcseconds | |
| H65 | 1 | R4 | sigma(separation), in arcseconds | |
| H66 | 1 | R4 | delta(Hp), in magnitudes | |
| H67 | 1 | R4 | sigma(delta(Hp)), in magnitudes | |
| H75 | 1 | R4 | VI used for reductions, in magnitudes |
|
| H0 | 1 | A1 | Catalogue (H = Hipparcos) | |
| H2 | 1 | A1 | Proximity flag | |
| H6 | 1 | A1 | Coarse variability flag | |
| H7 | 1 | A1 | Source of magnitude identifier | |
| H10 | 1 | A1 | Reference flag for BT and VT | |
| H36 | 1 | A1 | Reference flag for BT and VT | |
| H39 | 1 | A1 | Source of BV |
|
| H42 | 1 | A1 | Source of VI |
|
| H43 | 1 | A1 | Reference flag for colour indices | |
| H48 | 1 | A1 | Reference flag for photometry | |
| H52 | 1 | A1 | Flag (variability type) | |
| H53 | 1 | A1 | Flag (variability tables) | |
| H54 | 1 | A1 | Flag (light curves) | |
| H55 | 1 | A10 | CCDM Identifier | |
| H56 | 1 | A1 | Historical status flag | |
| H57 | 1 | I1 | Number of catalogue entries | |
| H58 | 1 | I1 | Number of components | |
| H59 | 1 | A1 | Double/Multiple Systems Annex flag | |
| H60 | 1 | A1 | Astrometric source flag | |
| H61 | 1 | A1 | Solution quality | |
| H62 | 1 | A2 | Component identifiers | |
| H68 | 1 | A1 | Survey flag | |
| H69 | 1 | A1 | Chart flag | |
| H70 | 1 | A1 | Notes flag | |
| H71 | 1 | A6 | HD identifier | |
| H72 | 1 | A10 | DM (BD) identifier | |
| H73 | 1 | A10 | DM (CoD) identifier | |
| H74 | 1 | A10 | DM (CPD) identifier | |
| H76 | 1 | A12 | Spectral type | |
| H77 | 1 | A1 | Source of spectral type | |
| SPARE | 29 | A1 | Spare space |