Exposure
- ID
- GRAVI.2025-10-30T01:43:50.314_2
- Header ID
- GRAVI.2025-10-30T01:43:50.314
- Date updated
- 2025-10-30 02:01:45 UTC+0000
- Release date
- 2026-10-30 02:01:45 UTC+0000
- UTC Start
- 2025-10-30 01:43:50.314
- UTC End
- 2025-10-30 01:49:50.314
- MJD Start
- 60978.07211012
- MJD End
- 60978.07627678667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004654
- Ambient temperature (°C)
- 12.47
- Seeing (arcsec)
- 0.73
Observation
- ID
- 71056
- 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
- 52736
- Name
- HD_4391_B
- RA
- 11.434432083333332
- DEC
- -47.54899533333333
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 | 84.4790 | 85.0560 | 102.3000 | 103.4000 |
| A0-J2 | 125.9680 | 126.4770 | 79.5000 | 80.7000 |
| A0-K0 | 127.7290 | 127.8420 | 59.5950 | 60.7860 |
| G1-J2 | 58.1180 | 58.0640 | 45.3000 | 46.4000 |
| G1-K0 | 87.1190 | 86.9700 | 18.4860 | 19.3620 |
| J2-K0 | 43.9570 | 44.0750 | 341.8320 | 342.5150 |
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 | 60978.07211012 |
| 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 | 84.479 |
| HIERARCH ESO ISS PBL12 END | 85.056 |
| HIERARCH ESO ISS PBLA12 START | 102.3 |
| HIERARCH ESO ISS PBLA12 END | 103.4 |
| HIERARCH ESO ISS PBL13 START | 125.968 |
| HIERARCH ESO ISS PBL13 END | 126.477 |
| HIERARCH ESO ISS PBLA13 START | 79.5 |
| HIERARCH ESO ISS PBLA13 END | 80.7 |
| HIERARCH ESO ISS PBL14 START | 127.729 |
| HIERARCH ESO ISS PBL14 END | 127.842 |
| HIERARCH ESO ISS PBLA14 START | 59.595 |
| HIERARCH ESO ISS PBLA14 END | 60.786 |
| HIERARCH ESO ISS PBL23 START | 58.118 |
| HIERARCH ESO ISS PBL23 END | 58.064 |
| HIERARCH ESO ISS PBLA23 START | 45.3 |
| HIERARCH ESO ISS PBLA23 END | 46.4 |
| HIERARCH ESO ISS PBL24 START | 87.119 |
| HIERARCH ESO ISS PBL24 END | 86.97 |
| HIERARCH ESO ISS PBLA24 START | 18.486 |
| HIERARCH ESO ISS PBLA24 END | 19.362 |
| HIERARCH ESO ISS PBL34 START | 43.957 |
| HIERARCH ESO ISS PBL34 END | 44.075 |
| HIERARCH ESO ISS PBLA34 START | 341.832 |
| HIERARCH ESO ISS PBLA34 END | 342.515 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003792 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005516 |
| HIERARCH ESO ISS AMBI TEMP | 12.47 |
| HIERARCH ESO ISS AMBI FWHM START | 0.67 |
| HIERARCH ESO ISS AMBI FWHM END | 0.79 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.2637 |
| HIERARCH ESO FT ROBJ DELTA | -473256.3832 |