Exposure
- ID
- GRAVI.2025-10-09T03:27:43.217_1
- Header ID
- GRAVI.2025-10-09T03:27:43.217
- Date updated
- 2025-10-09 03:41:04 UTC+0000
- Release date
- 2026-10-09 03:41:04 UTC+0000
- UTC Start
- 2025-10-09 03:27:43.217
- UTC End
- 2025-10-09 03:33:43.217
- MJD Start
- 60957.1442502
- MJD End
- 60957.148416866665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0038105
- Ambient temperature (°C)
- 12.93
- Seeing (arcsec)
- 0.755
Observation
- ID
- 70874
- 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
- 52586
- Name
- HD_4391_B
- RA
- 11.432934
- DEC
- -47.54846
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 86.3110 | 86.7830 | 105.9000 | 107.0000 |
| A0-J2 | 127.5260 | 127.8920 | 83.6000 | 84.8000 |
| A0-K0 | 127.9780 | 127.9760 | 63.5930 | 64.7610 |
| G1-J2 | 57.8880 | 57.7930 | 49.1000 | 50.1000 |
| G1-K0 | 86.5720 | 86.3870 | 21.4290 | 22.2920 |
| J2-K0 | 44.3350 | 44.4340 | 344.1660 | 344.8730 |
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 | 60957.1442502 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 4391 B |
| HIERARCH ESO INS SOBJ NAME | HD_4391_B |
| RA | 11.432934 |
| 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 | 86.311 |
| HIERARCH ESO ISS PBL12 END | 86.783 |
| HIERARCH ESO ISS PBLA12 START | 105.9 |
| HIERARCH ESO ISS PBLA12 END | 107.0 |
| HIERARCH ESO ISS PBL13 START | 127.526 |
| HIERARCH ESO ISS PBL13 END | 127.892 |
| HIERARCH ESO ISS PBLA13 START | 83.6 |
| HIERARCH ESO ISS PBLA13 END | 84.8 |
| HIERARCH ESO ISS PBL14 START | 127.978 |
| HIERARCH ESO ISS PBL14 END | 127.976 |
| HIERARCH ESO ISS PBLA14 START | 63.593 |
| HIERARCH ESO ISS PBLA14 END | 64.761 |
| HIERARCH ESO ISS PBL23 START | 57.888 |
| HIERARCH ESO ISS PBL23 END | 57.793 |
| HIERARCH ESO ISS PBLA23 START | 49.1 |
| HIERARCH ESO ISS PBLA23 END | 50.1 |
| HIERARCH ESO ISS PBL24 START | 86.572 |
| HIERARCH ESO ISS PBL24 END | 86.387 |
| HIERARCH ESO ISS PBLA24 START | 21.429 |
| HIERARCH ESO ISS PBLA24 END | 22.292 |
| HIERARCH ESO ISS PBL34 START | 44.335 |
| HIERARCH ESO ISS PBL34 END | 44.434 |
| HIERARCH ESO ISS PBLA34 START | 344.166 |
| HIERARCH ESO ISS PBLA34 END | 344.873 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003671 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00395 |
| HIERARCH ESO ISS AMBI TEMP | 12.93 |
| HIERARCH ESO ISS AMBI FWHM START | 0.77 |
| HIERARCH ESO ISS AMBI FWHM END | 0.74 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.359 |
| HIERARCH ESO FT ROBJ DELTA | -473256.762 |