Exposure
- ID
- GRAVI.2025-10-30T01:18:50.251_2
- Header ID
- GRAVI.2025-10-30T01:18:50.251
- Date updated
- 2025-10-30 01:31:18 UTC+0000
- Release date
- 2026-10-30 01:31:18 UTC+0000
- UTC Start
- 2025-10-30 01:18:50.251
- UTC End
- 2025-10-30 01:24:50.251
- MJD Start
- 60978.05474828
- MJD End
- 60978.05891494667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.006059
- Ambient temperature (°C)
- 13.19
- 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 | 81.8960 | 82.5920 | 98.0000 | 99.1000 |
| A0-J2 | 123.5620 | 124.2250 | 74.7000 | 75.9000 |
| A0-K0 | 126.9840 | 127.2140 | 54.7710 | 56.0040 |
| G1-J2 | 58.2250 | 58.2130 | 40.8000 | 42.0000 |
| G1-K0 | 87.6190 | 87.5060 | 14.9700 | 15.8640 |
| J2-K0 | 43.4290 | 43.5710 | 339.1780 | 339.8390 |
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 | 60978.05474828 |
| 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 | 81.896 |
| HIERARCH ESO ISS PBL12 END | 82.592 |
| HIERARCH ESO ISS PBLA12 START | 98.0 |
| HIERARCH ESO ISS PBLA12 END | 99.1 |
| HIERARCH ESO ISS PBL13 START | 123.562 |
| HIERARCH ESO ISS PBL13 END | 124.225 |
| HIERARCH ESO ISS PBLA13 START | 74.7 |
| HIERARCH ESO ISS PBLA13 END | 75.9 |
| HIERARCH ESO ISS PBL14 START | 126.984 |
| HIERARCH ESO ISS PBL14 END | 127.214 |
| HIERARCH ESO ISS PBLA14 START | 54.771 |
| HIERARCH ESO ISS PBLA14 END | 56.004 |
| HIERARCH ESO ISS PBL23 START | 58.225 |
| HIERARCH ESO ISS PBL23 END | 58.213 |
| HIERARCH ESO ISS PBLA23 START | 40.8 |
| HIERARCH ESO ISS PBLA23 END | 42.0 |
| HIERARCH ESO ISS PBL24 START | 87.619 |
| HIERARCH ESO ISS PBL24 END | 87.506 |
| HIERARCH ESO ISS PBLA24 START | 14.97 |
| HIERARCH ESO ISS PBLA24 END | 15.864 |
| HIERARCH ESO ISS PBL34 START | 43.429 |
| HIERARCH ESO ISS PBL34 END | 43.571 |
| HIERARCH ESO ISS PBLA34 START | 339.178 |
| HIERARCH ESO ISS PBLA34 END | 339.839 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.006447 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005671 |
| HIERARCH ESO ISS AMBI TEMP | 13.19 |
| HIERARCH ESO ISS AMBI FWHM START | 0.62 |
| HIERARCH ESO ISS AMBI FWHM END | 0.63 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.359 |
| HIERARCH ESO FT ROBJ DELTA | -473256.762 |