Exposure
- ID
- GRAVI.2025-10-30T02:12:56.388_2
- Header ID
- GRAVI.2025-10-30T02:12:56.388
- Date updated
- 2025-10-30 02:25:46 UTC+0000
- Release date
- 2026-10-30 02:25:46 UTC+0000
- UTC Start
- 2025-10-30 02:12:56.388
- UTC End
- 2025-10-30 02:18:56.388
- MJD Start
- 60978.09231931
- MJD End
- 60978.09648597667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.006399
- Ambient temperature (°C)
- 13.09
- Seeing (arcsec)
- 0.625
Observation
- ID
- 70875
- 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
- 52587
- Name
- HD_4391_B
- RA
- 11.434829166666665
- DEC
- -47.549100555555555
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 G1 J2 K0
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 86.8880 | 87.3250 | 107.2000 | 108.3000 |
| A0-J2 | 127.9710 | 128.2840 | 85.0000 | 86.2000 |
| A0-K0 | 127.9700 | 127.9220 | 65.0230 | 66.1760 |
| G1-J2 | 57.7690 | 57.6580 | 50.4000 | 51.5000 |
| G1-K0 | 86.3420 | 86.1440 | 22.4850 | 23.3340 |
| J2-K0 | 44.4560 | 44.5480 | 345.0300 | 345.7350 |
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 | 60978.09231931 |
| 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 | 86.888 |
| HIERARCH ESO ISS PBL12 END | 87.325 |
| HIERARCH ESO ISS PBLA12 START | 107.2 |
| HIERARCH ESO ISS PBLA12 END | 108.3 |
| HIERARCH ESO ISS PBL13 START | 127.971 |
| HIERARCH ESO ISS PBL13 END | 128.284 |
| HIERARCH ESO ISS PBLA13 START | 85.0 |
| HIERARCH ESO ISS PBLA13 END | 86.2 |
| HIERARCH ESO ISS PBL14 START | 127.97 |
| HIERARCH ESO ISS PBL14 END | 127.922 |
| HIERARCH ESO ISS PBLA14 START | 65.023 |
| HIERARCH ESO ISS PBLA14 END | 66.176 |
| HIERARCH ESO ISS PBL23 START | 57.769 |
| HIERARCH ESO ISS PBL23 END | 57.658 |
| HIERARCH ESO ISS PBLA23 START | 50.4 |
| HIERARCH ESO ISS PBLA23 END | 51.5 |
| HIERARCH ESO ISS PBL24 START | 86.342 |
| HIERARCH ESO ISS PBL24 END | 86.144 |
| HIERARCH ESO ISS PBLA24 START | 22.485 |
| HIERARCH ESO ISS PBLA24 END | 23.334 |
| HIERARCH ESO ISS PBL34 START | 44.456 |
| HIERARCH ESO ISS PBL34 END | 44.548 |
| HIERARCH ESO ISS PBLA34 START | 345.03 |
| HIERARCH ESO ISS PBLA34 END | 345.735 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005957 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.006841 |
| HIERARCH ESO ISS AMBI TEMP | 13.09 |
| HIERARCH ESO ISS AMBI FWHM START | 0.72 |
| HIERARCH ESO ISS AMBI FWHM END | 0.53 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.359 |
| HIERARCH ESO FT ROBJ DELTA | -473256.762 |