Exposure
- ID
- GRAVI.2025-10-31T01:04:56.959_2
- Header ID
- GRAVI.2025-10-31T01:04:56.959
- Date updated
- 2025-10-31 01:21:20 UTC+0000
- Release date
- 2026-10-31 01:21:20 UTC+0000
- UTC Start
- 2025-10-31 01:04:56.959
- UTC End
- 2025-10-31 01:10:56.959
- MJD Start
- 60979.04510369
- MJD End
- 60979.04927035666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0048585
- Ambient temperature (°C)
- 13.89
- Seeing (arcsec)
- 0.75
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 | 80.7360 | 81.4770 | 96.3000 | 97.4000 |
| A0-J2 | 122.4440 | 123.1610 | 72.7000 | 73.9000 |
| A0-K0 | 126.5700 | 126.8390 | 52.8000 | 54.0460 |
| G1-J2 | 58.2270 | 58.2290 | 39.0000 | 40.2000 |
| G1-K0 | 87.7810 | 87.6810 | 13.5510 | 14.4460 |
| J2-K0 | 43.1920 | 43.3440 | 338.1480 | 338.7950 |
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 | 60979.04510369 |
| 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 | 80.736 |
| HIERARCH ESO ISS PBL12 END | 81.477 |
| HIERARCH ESO ISS PBLA12 START | 96.3 |
| HIERARCH ESO ISS PBLA12 END | 97.4 |
| HIERARCH ESO ISS PBL13 START | 122.444 |
| HIERARCH ESO ISS PBL13 END | 123.161 |
| HIERARCH ESO ISS PBLA13 START | 72.7 |
| HIERARCH ESO ISS PBLA13 END | 73.9 |
| HIERARCH ESO ISS PBL14 START | 126.57 |
| HIERARCH ESO ISS PBL14 END | 126.839 |
| HIERARCH ESO ISS PBLA14 START | 52.8 |
| HIERARCH ESO ISS PBLA14 END | 54.046 |
| HIERARCH ESO ISS PBL23 START | 58.227 |
| HIERARCH ESO ISS PBL23 END | 58.229 |
| HIERARCH ESO ISS PBLA23 START | 39.0 |
| HIERARCH ESO ISS PBLA23 END | 40.2 |
| HIERARCH ESO ISS PBL24 START | 87.781 |
| HIERARCH ESO ISS PBL24 END | 87.681 |
| HIERARCH ESO ISS PBLA24 START | 13.551 |
| HIERARCH ESO ISS PBLA24 END | 14.446 |
| HIERARCH ESO ISS PBL34 START | 43.192 |
| HIERARCH ESO ISS PBL34 END | 43.344 |
| HIERARCH ESO ISS PBLA34 START | 338.148 |
| HIERARCH ESO ISS PBLA34 END | 338.795 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005237 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00448 |
| HIERARCH ESO ISS AMBI TEMP | 13.89 |
| HIERARCH ESO ISS AMBI FWHM START | 0.7 |
| HIERARCH ESO ISS AMBI FWHM END | 0.8 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.2637 |
| HIERARCH ESO FT ROBJ DELTA | -473256.3832 |