Exposure
- ID
- GRAVI.2025-10-31T00:12:14.825_1
- Header ID
- GRAVI.2025-10-31T00:12:14.825
- Date updated
- 2025-10-31 00:26:05 UTC+0000
- Release date
- 2026-10-31 00:26:05 UTC+0000
- UTC Start
- 2025-10-31 00:12:14.825
- UTC End
- 2025-10-31 00:18:14.825
- MJD Start
- 60979.00850492
- MJD End
- 60979.012671586665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0052085
- Ambient temperature (°C)
- 13.92
- Seeing (arcsec)
- 0.64
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 | 73.4090 | 74.3850 | 86.7000 | 87.9000 |
| A0-J2 | 115.2650 | 116.2160 | 61.5000 | 62.9000 |
| A0-K0 | 123.5700 | 123.9810 | 41.7830 | 43.1590 |
| G1-J2 | 57.9680 | 58.0170 | 28.9000 | 30.1000 |
| G1-K0 | 88.3290 | 88.2880 | 5.8870 | 6.8160 |
| J2-K0 | 41.6540 | 41.8650 | 332.9650 | 333.5610 |
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 | 60979.00850492 |
| 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 | 73.409 |
| HIERARCH ESO ISS PBL12 END | 74.385 |
| HIERARCH ESO ISS PBLA12 START | 86.7 |
| HIERARCH ESO ISS PBLA12 END | 87.9 |
| HIERARCH ESO ISS PBL13 START | 115.265 |
| HIERARCH ESO ISS PBL13 END | 116.216 |
| HIERARCH ESO ISS PBLA13 START | 61.5 |
| HIERARCH ESO ISS PBLA13 END | 62.9 |
| HIERARCH ESO ISS PBL14 START | 123.57 |
| HIERARCH ESO ISS PBL14 END | 123.981 |
| HIERARCH ESO ISS PBLA14 START | 41.783 |
| HIERARCH ESO ISS PBLA14 END | 43.159 |
| HIERARCH ESO ISS PBL23 START | 57.968 |
| HIERARCH ESO ISS PBL23 END | 58.017 |
| HIERARCH ESO ISS PBLA23 START | 28.9 |
| HIERARCH ESO ISS PBLA23 END | 30.1 |
| HIERARCH ESO ISS PBL24 START | 88.329 |
| HIERARCH ESO ISS PBL24 END | 88.288 |
| HIERARCH ESO ISS PBLA24 START | 5.887 |
| HIERARCH ESO ISS PBLA24 END | 6.816 |
| HIERARCH ESO ISS PBL34 START | 41.654 |
| HIERARCH ESO ISS PBL34 END | 41.865 |
| HIERARCH ESO ISS PBLA34 START | 332.965 |
| HIERARCH ESO ISS PBLA34 END | 333.561 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005176 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005241 |
| HIERARCH ESO ISS AMBI TEMP | 13.92 |
| HIERARCH ESO ISS AMBI FWHM START | 0.68 |
| HIERARCH ESO ISS AMBI FWHM END | 0.6 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.359 |
| HIERARCH ESO FT ROBJ DELTA | -473256.762 |