Exposure
- ID
- GRAVI.2025-10-30T02:49:53.482_1
- Header ID
- GRAVI.2025-10-30T02:49:53.482
- Date updated
- 2025-10-30 03:05:46 UTC+0000
- Release date
- 2026-10-30 03:05:46 UTC+0000
- UTC Start
- 2025-10-30 02:49:53.482
- UTC End
- 2025-10-30 02:55:53.482
- MJD Start
- 60978.11798012
- MJD End
- 60978.12214678666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005152
- Ambient temperature (°C)
- 14.07
- Seeing (arcsec)
- 0.615
Observation
- ID
- 71055
- Category
- science
- Program ID
- 116.28NC.001
- Program Title
- GRAVITY-GAIA DR4 EXOPLANET SURVEY IN NEARBY LOW-MASS BINARY SYSTEMS
- Program Type
- Normal
- PI / COI
- KERVELLA / GALLENNE / ARENOU / BEICHMAN / BOURDAROT / LACOUR / MENDEZ / MÉRAND / NOWAK
Target
- ID
- 52735
- Name
- HD_4391_B
- RA
- 11.43293
- DEC
- -47.54846
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 89.0260 | 89.2900 | 113.5000 | 114.6000 |
| A0-J2 | 129.1750 | 129.2260 | 91.9000 | 93.0000 |
| A0-K0 | 127.1340 | 126.8530 | 71.7010 | 72.8220 |
| G1-J2 | 56.9050 | 56.7050 | 56.6000 | 57.6000 |
| G1-K0 | 85.0020 | 84.7290 | 27.3830 | 28.1950 |
| J2-K0 | 44.9250 | 44.9870 | 349.2260 | 349.9540 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 116.28NC.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60978.11798012 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 4391 B |
| HIERARCH ESO INS SOBJ NAME | HD_4391_B |
| RA | 11.43293 |
| DEC | -47.54846 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | A0 |
| HIERARCH ESO ISS CONF STATION2 | G1 |
| HIERARCH ESO ISS CONF STATION3 | J2 |
| HIERARCH ESO ISS CONF STATION4 | K0 |
| EXPTIME | 377.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 89.026 |
| HIERARCH ESO ISS PBL12 END | 89.29 |
| HIERARCH ESO ISS PBLA12 START | 113.5 |
| HIERARCH ESO ISS PBLA12 END | 114.6 |
| HIERARCH ESO ISS PBL13 START | 129.175 |
| HIERARCH ESO ISS PBL13 END | 129.226 |
| HIERARCH ESO ISS PBLA13 START | 91.9 |
| HIERARCH ESO ISS PBLA13 END | 93.0 |
| HIERARCH ESO ISS PBL14 START | 127.134 |
| HIERARCH ESO ISS PBL14 END | 126.853 |
| HIERARCH ESO ISS PBLA14 START | 71.701 |
| HIERARCH ESO ISS PBLA14 END | 72.822 |
| HIERARCH ESO ISS PBL23 START | 56.905 |
| HIERARCH ESO ISS PBL23 END | 56.705 |
| HIERARCH ESO ISS PBLA23 START | 56.6 |
| HIERARCH ESO ISS PBLA23 END | 57.6 |
| HIERARCH ESO ISS PBL24 START | 85.002 |
| HIERARCH ESO ISS PBL24 END | 84.729 |
| HIERARCH ESO ISS PBLA24 START | 27.383 |
| HIERARCH ESO ISS PBLA24 END | 28.195 |
| HIERARCH ESO ISS PBL34 START | 44.925 |
| HIERARCH ESO ISS PBL34 END | 44.987 |
| HIERARCH ESO ISS PBLA34 START | 349.226 |
| HIERARCH ESO ISS PBLA34 END | 349.954 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004837 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005467 |
| HIERARCH ESO ISS AMBI TEMP | 14.07 |
| HIERARCH ESO ISS AMBI FWHM START | 0.63 |
| HIERARCH ESO ISS AMBI FWHM END | 0.6 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.2637 |
| HIERARCH ESO FT ROBJ DELTA | -473256.3832 |